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                                                                   EXHIBIT 10.24

                         REGISTRATION RIGHTS AGREEMENT

     This REGISTRATION RIGHTS AGREEMENT (this "Agreement"), dated as of August
15, 2000, is made and entered into among Advanced Aerodynamics & Structures,
Inc., a Delaware corporation (the "Company"), and the Investors who are
signatories hereto ("Investor" or "Investors") for their benefit and for the
benefit of the Finders.

     WHEREAS, the Company and the Investor have entered into that certain
Private Equity Line of Credit Agreement, dated as of the date hereof (the
"Investment Agreement"), pursuant to which the Company will issue, from time to
time, to the Investor up to $20,000,000 worth of shares of Common Stock, $.001
par value per share, of the Company (the "Common Stock");

     WHEREAS, pursuant to the terms of, and in partial consideration for, the
Investor's agreement to enter into the Investment Agreement, the Company has
agreed to provide the Investor and Finders with certain registration rights with
respect to the Registrable Securities;

     NOW, THEREFORE, in consideration of the premises, the representations,
warranties, covenants and agreements contained herein and in the Investment
Agreement, and for other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, intending to be legally bound
hereby, the parties hereto agree as follows (capitalized terms used herein and
not defined herein shall have the meaning ascribed to them in the Investment
Agreement):

                                   ARTICLE I
                              REGISTRATION RIGHTS

     Section 1.1  FORM SB-2 REGISTRATION STATEMENTS.

     (a) Filing of Form SB-2 Registration Statements. Subject to the terms and
conditions of this Agreement, the Company shall file with the SEC within forty-
five (45) days following the Subscription Date a registration statement on Form
SB-2 under the Securities Act (the "Registration Statement") for the
registration of the resale by the Investor of the Registrable Securities.

     (b) Effectiveness of the Registration Statement. The Company shall use its
reasonable best efforts to have the Registration Statement declared effective by
the SEC by no later than one hundred and twenty (120) days after Subscription
Date and to insure that the Registration Statement remains in effect throughout
the term of this Agreement as set forth in Section 4.2, subject to the terms and
conditions of this Agreement.

     (c) Failure to Obtain Effectiveness of Registration Statements. In the
event the Company fails for any reason to obtain the effectiveness of a
Registration Statement within the time period set forth in Section 1.1(b), the
Company shall pay to the Investors, collectively, within three Trading Days of
the date by which such Registration Statement was required to have been declared
effective, each Investor's Proportionate Share of the sum of $100,000 in
immediately available funds into an account designated by the Investor. The
Company will also pay to the Finders, collectively, the sum of $25,000 during
the same time and in the same manner. Such payment shall be made by wire
transfer of immediately available funds.

     (d) Failure to Maintain Effectiveness of Registration Statements. In the
event the Company fails to maintain the effectiveness of a Registration
Statement (or the underlying prospectus) throughout the period set forth in
Section 4.2, and the Investor holds any Registrable Securities at any time
during the period of such ineffectiveness (an "Ineffective Period"), the Company
shall pay to the Investor and Finder

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in immediately available funds into an account designated by the Investor or
Finder an amount equal to one half of one percent (0.5%) of the aggregate
Purchase Price (payable to the Investor) and aggregate purchase price of the
Warrant Shares (payable to the Finder) of all of the Registrable Securities then
held by the Investor and Finder for the each of the first four seven-calendar-
day periods (or portion thereof) of an Ineffective Period and one percent (1.0%)
of such aggregate Purchase Price or each subsequent seven-calendar-day periods
(or portion thereof) of such Ineffective Period. Such payments shall be made on
the first Trading Day after the earliest to occur of (i) the expiration of the
Commitment Period, (ii) the expiration of an Ineffective Period, (iii) the
expiration of the first twenty-eight calendar days of an Ineffective Period and
(iv) the expiration of each additional twenty-eight calendar-day period during
an Ineffective Period.

     (e)  The parties hereto acknowledge and agree that the sums payable under
Sections 1(c) or 1(d) above shall constitute liquidated damages and not
penalties. The parties further acknowledge that (a) the amount of loss or
damages likely to be incurred is incapable or is difficult to precisely
estimate, (b) the amounts specified in such Sections bear a reasonable
proportion and are not plainly or grossly disproportionate to the probable loss
likely to be incurred in connection with any failure by the Company to obtain or
maintain the effectiveness of a Registration Statement, (c) one of the reasons
for the Parties reaching an agreement as to such amounts was the uncertainty and
cost of litigation regarding the question of actual damages, and (d) the parties
are sophisticated business parties and have been represented by sophisticated
and able legal and financial counsel and negotiated this Agreement at arm's
length.

                                  ARTICLE II
                            REGISTRATION PROCEDURES

     Section 2.1 FILINGS; INFORMATION. The Company will effect the registration
and sale of such Registrable Securities in accordance with the intended methods
of disposition thereof. Without limiting the foregoing, the Company in each such
case will do the following as expeditiously as possible, but in no event later
than the deadline, if any, prescribed therefor in this Agreement:

     (a)  The Company shall prepare and file with the SEC a registration
statement on Form S-3 (if use of such form is then available to the Company
pursuant to the rules of the SEC and, if not, on such other form promulgated by
the SEC for which the Company then qualifies and which counsel for the Company
shall deem appropriate and which form shall be available for the sale of the
Registrable Securities to be registered thereunder in accordance with the
provisions of this Agreement and in accordance with the intended method of
distribution of such Registrable Securities); use reasonable best efforts to
cause such filed Registration Statement to become and remain effective (pursuant
to Rule 415 under the Act or otherwise); prepare and file with the SEC such
amendments and supplements to such Registration Statement and the prospectus
used in connection therewith as may be necessary to keep such Registration
Statement effective for the time periods prescribed by Section 1.1(b); and
comply with the provisions of the Act with respect to the disposition of all
securities covered by such Registration Statement during such period in
accordance with the intended methods of disposition by the Investor set forth in
such Registration Statement.

     (b)  The Company shall file all necessary amendments to the Registration
Statement in order to effectuate the purpose of this Agreement and the
Investment Agreement.

     (c)  If so requested by the managing underwriters, if any, or the holders
of a majority in aggregate principal amount of the Registrable Securities being
sold in connection with the filing of a Shelf Registration, the Company shall
(i) promptly incorporate in a prospectus supplement or post-effective amendment
such information as the managing underwriters, if any, and such holders agree
should be included therein, and (ii) make all required filings of such
prospectus supplement or post-

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effective amendment as soon as practicable after the Company has received
notification of the matters to be incorporated in such prospectus supplement or
post-effective amendment; provided, however, that the Company shall not be
required to take any action pursuant to this Section 2.1(c)(ii) that would, in
the opinion of counsel for the Company, violate applicable law.

     (d)  In connection with the filing of a Registration Statement, the Company
shall enter into such agreements and take all such other reasonable actions in
connection therewith (including those reasonably requested by the managing
underwriters, if any, or the holders of a majority in aggregate principal amount
of the Registrable Securities being sold) in order to expedite or facilitate the
disposition of such Registrable Securities, and in such connection, whether or
not an underwriting agreement is entered into and whether or not the
registration is an underwritten registration, (i) make such representations and
warranties to the holders of such Registrable Securities and the underwriters,
if any, with respect to the business of the Company (including with respect to
businesses or assets acquired or to be acquired by the Company), and the
Registration Statement, prospectus and documents, if any, incorporated or deemed
to be incorporated by reference therein, in each case, in form, substance and
scope as are customarily made by issuers to underwriters in underwritten
offerings, and confirm the same if and when requested; (ii) if an underwriting
agreement is entered into, the same shall contain indemnification provision and
procedures no less favorable to the selling holders of such Registrable
Securities and the underwriters, if any, than those set forth herein (or such
other provisions and procedures acceptable to the holders of a majority in
aggregate principal amount of Registrable Securities covered by such
Registration Statement and the managing underwriters, if any); and (iii) deliver
such documents and certificates as may be reasonably requested by the holders of
a majority in aggregate principal amount of the Registrable Securities being
sold, their counsel and the managing underwriters, if any, to evidence the
continued validity of their representations and warranties made pursuant to
clause (i) above and to evidence compliance with any customary conditions
contained in the underwriting agreement or other agreement entered into by the
Company.

     (e)  Five Trading Days prior to filing a Registration Statement or
prospectus, or any amendment or supplement thereto (excluding amendments deemed
to result from the filing of documents incorporated by reference therein), the
Company shall deliver to the seller of Registrable Securities and one counsel
representing the seller of Registrable Securities, in accordance with the notice
provisions of Section 4.8, copies of such Registration Statement as proposed to
be filed, together with exhibits thereto, which documents will be subject to
review by such parties, and thereafter deliver to the seller of Registrable
Securities and its counsel, in accordance with the notice provisions of Section
4.8, such number of copies of such Registration Statement, each amendment and
supplement thereto (in each case including all exhibits thereto), the prospectus
included in such Registration Statement (including each preliminary prospectus)
and such other documents or information as the Investor or counsel may
reasonably request in order to facilitate the disposition of the Registrable
Securities.

     (f)  After the filing of the Registration Statement, the Company shall
promptly notify the Investor of any stop order issued or threatened by the SEC
in connection therewith and take all reasonable actions required to prevent the
entry of such stop order or to remove it if entered.

     (g)  The Company shall use its reasonable best efforts to (i) register or
qualify such Registrable Securities under such other securities or blue sky laws
of such jurisdictions in the United States as the Investor may reasonably (in
light of its intended plan of distribution) request, and (ii) cause such
Registrable Securities to be registered with or approved by such other
governmental agencies or authorities in the United States as may be necessary by
virtue of the business and operations of the Company and do any and all other
acts and things that may be reasonably necessary or advisable to enable the
Investor to consummate the disposition of the Registrable Securities; provided
that the Company will not be required to qualify generally to do business in any
jurisdiction where it would not

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otherwise be required to qualify but for this paragraph (g), subject itself to
taxation in any such jurisdiction, or consent or subject itself to general
service of process in any such jurisdiction.

     (h)  The Company shall immediately notify the Investor upon the occurrence
of any of the following events in respect of a Registration Statement or related
prospectus in respect of an offering of Registrable Securities: (i) receipt of
any request for additional information by the SEC or any other federal or state
governmental authority during the period of effectiveness of the Registration
Statement for amendments or supplements to the Registration Statement or related
prospectus; (ii) the issuance by the SEC or any other federal or state
governmental authority of any stop order suspending the effectiveness of the
Registration Statement or the initiation of any proceedings for that purpose;
(iii) receipt of any notification with respect to the suspension of the
qualification or exemption from qualification of any of the Registrable
Securities for sale in any jurisdiction or the initiation or threatening of any
proceeding for such purpose; (iv) the happening of any event that makes any
statement made in the Registration Statement or related prospectus or any
document incorporated or deemed to be incorporated therein by reference untrue
in any material respect or that requires the making of any changes in the
Registration Statement, related prospectus or documents so that, in the case of
the Registration Statement, it will not contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein not misleading, and that in the case
of the related prospectus, it will not contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein, in the light of the circumstances
under which they were made, not misleading; and (v) the Company's reasonable
determination that a post-effective amendment to the Registration Statement
would be appropriate; and the Company will promptly make available to the
Investor any such supplement or amendment to the related prospectus.

     (i)  The Company shall enter into customary agreements and take such other
actions as are reasonably required in order to expedite or facilitate the
disposition of such Registrable Securities (whereupon the Investor may, at its
option, require that any or all of the representations, warranties and covenants
of the Company also be made to and for the benefit of the Investor).

     (j)  The Company shall make available to the Investor (and will deliver to
Investor's counsel), subject to restrictions imposed by the United States
federal government or any agency or instrumentality thereof, copies of all
correspondence between the SEC and the Company, its counsel or auditors and will
also make available for inspection by the Investor and any attorney, accountant
or other professional retained by the Investor (collectively, the "Inspectors"),
all financial and other records, pertinent corporate documents and properties of
the Company (collectively, the "Records") as shall be reasonably necessary to
enable them to exercise their due diligence responsibility, and cause the
Company's officers and employees to supply all information reasonably requested
by any Inspectors in connection with such Registration Statement. Records that
the Company determines, in good faith, to be confidential and which it notifies
the Inspectors are confidential shall not be disclosed by the Inspectors unless
(i) the disclosure of such Records is necessary to avoid or correct a
misstatement or omission in such Registration Statement or (ii) the disclosure
or release of such Records is requested or required pursuant to oral questions,
interrogatories, requests for information or documents or a subpoena or other
order from a court of competent jurisdiction or other process; provided that
prior to any disclosure or release pursuant to clause (ii), the Inspectors shall
provide the Company with prompt notice of any such request or requirement so
that the Company may seek an appropriate protective order or waive such
Inspectors' obligation not to disclose such Records; and, provided further, that
if failing the entry of a protective order or the waiver by the Company
permitting the disclosure or release of such Records, the Inspectors, upon
advice of counsel, are compelled to disclose such Records, the Inspectors may
disclose that portion of the Records which counsel has advised the Inspectors
that the Inspectors are compelled to disclose. The Investor agrees that
information obtained by it solely as a result of such

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inspections (not including any information obtained from a third party who,
insofar as is known to the Investor after reasonable inquiry, is not prohibited
from providing such information by a contractual, legal or fiduciary obligation
to the Company) shall be deemed confidential and shall not be used by it as the
basis for any market transactions in the securities of the Company or its
Affiliates unless and until such information is made generally available to the
public. The Investor further agrees that it will, upon learning that disclosure
of such Records is sought in a court of competent jurisdiction, give notice to
the Company and allow the Company, at its expense, to undertake appropriate
action to prevent disclosure of the Records deemed confidential.

     (k)  The Company shall deliver, in accordance with the notice provisions of
Section 4.8, to the Investor a signed counterpart, addressed to the Investor, of
(1) an opinion or opinions of counsel to the Company, and (2) to the extent
required by law or reasonably necessary to effect a sale of Registrable
Securities in accordance with prevailing business practices at the time of any
sale of Registrable Securities pursuant to a Registration Statement, a comfort
letter or comfort letters from the Company's independent public accountants,
each in customary form and covering such matters of the type customarily covered
by opinions or comfort letters, as the case may be, as the Investor therefor
reasonably requests.

     (l)  The Company shall otherwise comply with all applicable rules and
regulations of the SEC, including, without limitation, compliance with
applicable reporting requirements under the Exchange Act.

     (m)  The Company shall appoint a transfer agent and registrar for all such
Registrable Securities covered by such Registration Statement not later than the
effective date of such Registration Statement.

     (n)  The Company may require the Investor to promptly furnish in writing to
the Company such information as may be legally required in connection with such
registration including, without limitation, all such information as may be
requested by the SEC or the National Association of Securities Dealers. The
Investor agrees to provide such information requested in connection with such
registration within ten (10) business days after receiving such written request
and the Company shall not be responsible for any delays in obtaining or
maintaining the effectiveness of the Registration Statement caused by the
Investor's failure to timely provide such information.

     Section 2.2  REGISTRATION EXPENSES.   In connection with each Registration
                  ---------------------
Statement, the Company shall pay all registration expenses incurred in
connection with the registration thereunder (the "Registration Expenses"),
including, without limitation: (i) all registration, filing, securities exchange
listing and fees required by the National Association of Securities Dealers,
(ii) all registration, filing, qualification and other fees and expenses of
compliance with securities or blue sky laws (including reasonable fees and
disbursements of counsel in connection with blue sky qualifications of the
Registrable Securities), (iii) all word processing, duplicating, printing,
messenger and delivery expenses, (iv) the Company's internal expenses
(including, without limitation, all salaries and expenses of its officers and
employees performing legal or accounting duties), (v) the fees and expenses
incurred in connection with the listing of the Registrable Securities, (vi)
reasonable fees and disbursements of counsel for the Company and customary fees
and expenses for independent certified public accountants retained by the
Company (including the expenses of any special audits or comfort letters or
costs associated with the delivery by independent certified public accountants
of such special audit(s) or comfort letter(s) requested pursuant to Section
2.1(l) hereof), (vii) the fees and expenses of any special experts retained by
the Company in connection with such registration, (viii) all reasonable fees and
expenses of one firm of counsel for the seller of Registrable Securities
retained as the seller's counsel with respect to such Registration Statement up
to an amount of $5,000, unless a greater amount is required due the nature of
the review performed by such counsel (an estimate of such greater fees and
expenses of such firm of

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counsel to be provided to the Company prior to the undertaking of such counsel's
review), (ix) premiums and other costs of policies of insurance against
liabilities arising out of any public offering of the Registrable Securities
being registered, and (x) any fees and disbursements of underwriters customarily
paid by issuers or sellers of securities, but excluding underwriting fees,
discounts, transfer taxes or commissions, if any, attributable to the sale of
Registrable Securities, which shall be payable by each seller of Registrable
Securities pro rata on the basis of the number of Registrable Securities of each
such seller that are included in a registration under this Agreement.

                                  ARTICLE III
                       INDEMNIFICATION AND CONTRIBUTION

     Section 3.1 INDEMNIFICATION BY THE COMPANY. The Company agrees to indemnify
and hold harmless each seller of Registrable Securities, its partners,
Affiliates, officers, directors, employees and duly authorized agents, and each
Person or entity, if any, who controls the seller of Registrable Securities
within the meaning of Section 15 of the Securities Act or Section 20 of the
Exchange Act, together with the partners, Affiliates, officers, directors,
employees and duly authorized agents of such controlling Person or entity
(collectively, the "Controlling Persons"), from and against any loss, claim,
damage, liability, costs and expenses (including, without limitation, reasonable
attorneys' fees and disbursements and costs and expenses of investigating and
defending any such claim) (collectively, "Damages"), joint or several, and any
action or proceeding in respect thereof to which the seller of Registrable
Securities, its partners, Affiliates, officers, directors, employees and duly
authorized agents, and any such Controlling Person may become subject under the
Act or otherwise as incurred and, insofar as such Damages (or actions or
proceedings in respect thereof) arise out of, or are based upon, any untrue
statement or alleged untrue statement of a material fact contained in any
Registration Statement or prospectus relating to the Registrable Securities or
any preliminary prospectus, or arises out of, or are based upon, any omission or
alleged omission to state therein a material fact required to be stated therein
or necessary to make the statements therein not misleading, except insofar as
the same are based upon information furnished in writing to the Company by the
seller of Registrable Securities expressly for use therein, and shall reimburse
the seller of Registrable Securities, its partners, Affiliates, officers,
directors, employees and duly authorized agents, and each such Controlling
Person for any legal and other expenses reasonably incurred by the seller of
Registrable Securities, its partners, Affiliates, officers, directors, employees
and duly authorized agents, or any such Controlling Person, as incurred, in
investigating or defending or preparing to defend against any such Damages or
actions or proceedings; provided, however, that the Company shall not be liable
to the seller of Registrable Securities to the extent that any such Damages
arise out of or are based upon an untrue statement or omission made in any
preliminary prospectus if (i) the seller of Registrable Securities failed to
send or deliver a copy of the final prospectus delivered by the Company to the
seller of Registrable Securities with or prior to the delivery of written
confirmation of the sale by the seller of Registrable Securities to the Person
asserting the claim from which such Damages arise, and (ii) the final prospectus
would have corrected such untrue statement or alleged untrue statement or such
omission or alleged omission.

     Section 3.2 CONDUCT OF INDEMNIFICATION PROCEEDINGS. Promptly after receipt
by any person or entity in respect of which indemnity may be sought pursuant to
Section 3.1 (an "Indemnified Party") of notice of any claim or the commencement
of any action, the Indemnified Party shall, if a claim in respect thereof is to
be made against the person or entity against whom such indemnity may be sought
(the "Indemnifying Party"), notify the Indemnifying Party in writing of the
claim or the commencement of such action; in the event an Indemnified Party
shall fail to give such notice as provided in this Section 3.2 and the
Indemnifying Party to whom notice was not given was unaware of the proceeding to
which such notice would have related and was materially prejudiced by the
failure to give such notice, the indemnification provided for in Section 3.1
shall be reduced to the extent of any actual prejudice resulting from such
failure to so notify the Indemnifying Party; provided, that the failure to
notify the Indemnifying Party shall not relieve it from any liability that it
may have to an Indemnified

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Party otherwise than under Section 3.1. If any such claim or action shall be
brought against an Indemnified Party, and it shall notify the Indemnifying Party
thereof, the Indemnifying Party shall be entitled to participate therein, and,
to the extent that it wishes, jointly with any other similarly notified
Indemnifying Party, to assume the defense thereof with counsel reasonably
satisfactory to the Indemnified Party. After notice from the Indemnifying Party
to the Indemnified Party of its election to assume the defense of such claim or
action, the Indemnifying Party shall not be liable to the Indemnified Party for
any legal or other expenses subsequently incurred by the Indemnified Party in
connection with the defense thereof other than reasonable costs of
investigation; provided that the Indemnified Party shall have the right to
employ separate counsel to represent the Indemnified Party and its controlling
persons who may be subject to liability arising out of any claim in respect of
which indemnity may be sought by the Indemnified Party against the Indemnifying
Party, but the fees and expenses of such counsel shall be for the account of
such Indemnified Party unless (i) the Indemnifying Party and the Indemnified
Party shall have mutually agreed to the retention of such counsel or (ii) in the
reasonable judgment of the Company and such Indemnified Party, representation of
both parties by the same counsel would be inappropriate due to actual or
potential conflicts of interest between them, it being understood, however, that
the Indemnifying Party shall not, in connection with any one such claim or
action or separate but substantially similar or related claims or actions in the
same jurisdiction arising out of the same general allegations or circumstances,
be liable for the fees and expenses of more than one separate firm of attorneys
together with appropriate local counsel) at any time for all Indemnified
Parties, or for fees and expenses that are not reasonable. No Indemnifying Party
shall, without the prior written consent of the Indemnified Party, effect any
settlement of any claim or pending or threatened proceeding in respect of which
the Indemnified Party is or could have been a party and indemnity could have
been sought hereunder by such Indemnified Party, unless such settlement includes
an unconditional release of such Indemnified Party from all liability arising
out of such claim or proceeding. Whether or not the defense of any claim or
action is assumed by the Indemnifying Party, such Indemnifying Party will not be
subject to any liability for any settlement made without its consent, which
consent will not be unreasonably withheld.

     Section 3.3 OTHER INDEMNIFICATION. Indemnification similar to that
specified in the preceding paragraphs of this Article 3 (with appropriate
modifications) shall be given by the Company and each seller of Registrable
Securities with respect to any required registration or other qualification of
securities under any federal or state law or regulation of any governmental
authority other than the Securities Act. The provisions of this Article III
shall be in addition to any other rights to indemnification, contribution or
other remedies which an Indemnified Party may have pursuant to law, equity,
contract or otherwise.

     Section 3.4 CONTRIBUTION. If the indemnification provided for in this
Article III is unavailable to the Indemnified Parties in respect of any Damages
referred to herein, then the Indemnifying Party, in lieu of indemnifying such
Indemnified Party, shall contribute to the amount paid or payable by such
Indemnified Party as a result of such Damages as between the Company on the one
hand and the Investor on the other, in such proportion as is appropriate to
reflect the relative fault of the Company and of the Investor in connection with
such statements or omissions, as well as other equitable considerations. The
relative fault of the Company on the one hand and of the Investor on the other
shall be determined by reference to, among other things, whether the untrue or
alleged untrue statement of a material fact or the omission or alleged omission
to state a material fact relates to information supplied by such party, and the
parties' relative intent, knowledge, access to information and opportunity to
correct or prevent such statement or omission. The Company and the Investor
agree that it would not be just and equitable if contribution pursuant to this
Section 3.4 were determined by pro rata allocation or by any other method of
allocation that does not take account of the equitable considerations referred
to in the immediately preceding paragraph. The amount paid or payable by an
Indemnified Party as a result of the Damages referred to in the immediately
preceding paragraph shall be deemed to include, subject to the limitations set
forth above, any legal or other expenses reasonably incurred by such Indemnified
Party in

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connection with investigating or defending any such action or claim.
Notwithstanding the provisions of this Section 3.4, the Investor shall in no
event be required to contribute any amount in excess of the amount by which the
total price at which the Registrable Securities of the seller of Registrable
Securities were sold to the public (less underwriting discounts and commissions)
exceeds the amount of any damages which the Investor has otherwise been required
to pay by reason of such untrue or alleged untrue statement or omission or
alleged omission. No Person guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any Person who was not guilty of such fraudulent
misrepresentation.

                                  ARTICLE IV
                                 MISCELLANEOUS

     Section 4.1 NO OUTSTANDING REGISTRATION RIGHTS. The Company represents and
warrants to the seller of Registrable Securities that there is not in effect on
the date hereof any agreement by the Company pursuant to which any holders of
securities of the Company have a right to cause the Company to register or
qualify such securities under the Securities Act or any securities or blue sky
laws of any jurisdiction that would conflict or be inconsistent with any
provision of this Agreement or the Investment Agreement.

     Section 4.2 TERM. The registration rights provided to the holders of
Registrable Securities hereunder shall terminate at such time as all Put Shares
and Warrant Shares (i) have been disposed of pursuant to the Registration
Statement, (ii) have been sold under circumstances under which all of the
applicable conditions of Rule 144 (or any similar provision then in force) under
the Securities Act ("Rule 144") are met, (iii) have been otherwise transferred
to holders who may trade such shares without restriction under the Securities
Act, and the Company has delivered a new certificate or other evidence of
ownership for such securities not bearing a restrictive legend, or (iv) may be
sold without any time, volume or manner limitations pursuant to Rule 144(k) (or
any similar provision then in effect) under the Securities Act in the opinion of
counsel to the Company, which counsel shall be reasonably acceptable to the
holder of Registrable Securities; provided, however, that such registration
rights shall not terminate sooner than three years following the Subscription
Date. Notwithstanding the foregoing, paragraphs (c) and (d) of Section 1.1,
Article III, Section 4.8, and Section 4.9 shall survive the termination of this
Agreement.

     Section 4.3 RULE 144. The Company covenants that it will file all reports
required to be filed by it under the Act and the Exchange Act and that it will
take such further action as holders of Registrable Securities may reasonably
request, all to the extent required from time to time to enable the seller of
Registrable Securities to sell Registrable Securities without registration under
the Act within the limitation of the exemptions provided by (a) Rule 144, as
such Rule may be amended from time to time, or (b) any similar rule or
regulation hereafter adopted by the SEC. If at any time the Company is not
required to file such reports, it will, upon the request of any holder of
Registrable Securities, make publicly available other information so long as
necessary to permit sales pursuant to Rule 144. Upon the request of the seller
of Registrable Securities, the Company will deliver to the seller of Registrable
Securities a written statement as to whether it has complied with such
requirements.

     Section 4.4 CERTIFICATE. The Company will, at its expense, forthwith upon
the request of any holder of Registrable Securities, deliver to such holder a
certificate, signed by the Company's principal financial officer, stating (a)
the Company's name, address and telephone number (including area code), (b) the
Company's Internal Revenue Service identification number, (c) the Company's
Commission file number, (d) the number of shares of each class of Stock
outstanding as shown by the most recent report or statement published by the
Company, and (e) whether the Company has filed the reports required to be filed
under the Exchange Act for a period of at least ninety (90) days prior to the
date of such certificate and in addition has filed the most recent annual report
required to be filed thereunder.

                                       8
<PAGE>

     Section 4.5 AMENDMENT AND MODIFICATION. Any provision of this Agreement may
be waived, provided that such waiver is set forth in a writing executed by both
parties to this Agreement. The provisions of this Agreement, including the
provisions of this sentence, may not be amended, modified or supplemented, and
waivers or consents to departures from the provisions hereof may not be given,
unless the Company has obtained the written consent of the holders of a majority
of the then outstanding Registrable Securities. Notwithstanding the foregoing,
the waiver of any provision hereof with respect to a matter that relates
exclusively to the rights of holders of Registrable Securities whose securities
are being sold pursuant to a Registration Statement and does not directly or
indirectly affect the rights of other holders of Registrable Securities may be
given by holders of at least a majority of the Registrable Securities being sold
by such holders; provided that the provisions of this sentence may not be
amended, modified or supplemented except in accordance with the provisions of
the immediately preceding sentence. No course of dealing between or among any
Person having any interest in this Agreement will be deemed effective to modify,
amend or discharge any part of this Agreement or any rights or obligations of
any person under or by reason of this Agreement.

     Section 4.6 SUCCESSORS AND ASSIGNS; ENTIRE AGREEMENT. This Agreement and
all of the provisions hereof shall be binding upon and inure to the benefit of
the parties hereto and their respective successors and assigns. The Investor and
Finders may assign its rights under this Agreement to any subsequent holder the
Registrable Securities, provided that the Company shall have the right to
require any holder of Registrable Securities to execute a counterpart of this
Agreement as a condition to such holder's claim to any rights hereunder. This
Agreement, together with the Investment Agreement sets forth the entire
agreement and understanding between the parties as to the subject matter hereof
and merges and supersedes all prior discussions, agreements and understandings
of any and every nature among them.

     Section 4.7 SEPARABILITY. In the event that any provision of this Agreement
or the application of any provision hereof is declared to be illegal, invalid or
otherwise unenforceable by a court of competent jurisdiction, the remainder of
this Agreement shall not be affected except to the extent necessary to delete
such illegal, invalid or unenforceable provision unless that provision held
invalid shall substantially impair the benefits of the remaining portions of
this Agreement.

     Section 4.8 NOTICES. All notices, demands, requests, consents, approvals,
and other communications required or permitted hereunder shall be in writing and
shall be (i) personally served, (ii) deposited in the mail, registered or
certified, return receipt requested, postage prepaid, (iii) delivered by
reputable air courier service with charges prepaid, or (iv) transmitted by hand
delivery, telegram or facsimile, addressed as set forth below or to such other
address as such party shall have specified most recently by written notice. Any
notice or other communication required or permitted to be given hereunder shall
be deemed effective (a) upon hand delivery or delivery by facsimile, with
accurate confirmation generated by the transmitting facsimile machine, at the
address or number designated below (if delivered on a business day during normal
business hours where such notice is to be received), or the first business day
following such delivery (if delivered other than on a business day during normal
business hours where such notice is to be received) or (b) on the second
business day following the date of mailing by express courier service, fully
prepaid, addressed to such address, or upon actual receipt of such mailing,
whichever shall first occur. The addresses for such communications shall be:

     If to Advanced Aerodynamics & Structures, Inc.:

             Advanced Aerodynamics & Structures, Inc.
             3205 Lakewood Boulevard
             Long Beach Airport, CA 90808
             Telecopier: (562) 938-8620

                                       9
<PAGE>

       with a copy to (which communication shall not constitute notice):

            Otto Sorensen, Esq.
            Luce, Forward, Hamilton & Scripps, LLP
            600 West Broadway, Suite 2600
            San Diego, CA 92101
            Telecopier: (619) 645-5324

       If to the Investor:

            To the address and telecopier number set forth on Schedule A hereto

       with a copy to (which communication shall not constitute notice):

            Grushko & Mittman, P.C.
            551 Fifth Avenue, Suite 1601
            New York, New York 10176
            Telecopier: (212) 697-3575

Either party hereto may from time to time change its address or facsimile number
for notices under this Section 4.8 by giving at least ten (10) days' prior
written notice of such changed address or facsimile number to the other party
hereto.

     Section 4.9 GOVERNING LAW. This Agreement shall be subject to the same
choice of law, venue and jurisdiction as the Investment Agreement and construed
under the laws of the State of New York, without giving effect to provisions
regarding conflicts of law or choice of law.

     Section 4.10 HEADINGS. The headings in this Agreement are for convenience
of reference only and shall not constitute a part of this Agreement, nor shall
they affect their meaning, construction or effect.

     Section 4.11 COUNTERPARTS. This Agreement may be executed in multiple
counterparts, each of which shall be deemed to be an original instrument and all
of which together shall constitute one and the same instrument.

     Section 4.12 FURTHER ASSURANCES. Each party shall cooperate and take such
action as may be reasonably requested by another party in order to carry out the
provisions and purposes of this Agreement and the transactions contemplated
hereby.

                                       10
<PAGE>

     Section 4.13 REMEDIES. In the event of a breach or a threatened breach by
any party to this Agreement of its obligations under this Agreement, any party
injured or to be injured by such breach will be entitled to specific performance
of its rights under this Agreement or to injunctive relief, in addition to being
entitled to exercise all rights provided in this Agreement and granted by law.
The parties agree that the provisions of this Agreement shall be specifically
enforceable, it being agreed by the parties that the remedy at law, including
monetary damages, for breach of any such provision will be inadequate
compensation for any loss and that any defense or objection in any action for
specific performance or injunctive relief that a remedy at law would be adequate
is waived.

     IN WITNESS WHEREOF, the parties hereto have caused this Registration Rights
Agreement to be executed by the undersigned, thereunto duly authorized, as of
the date first set forth above.

                              ADVANCED AERODYNAMICS &
                              STRUCTURES, INC.

                              By: /s/ Carl L. Chen
                                 -----------------------------------------

                                  /s/ illegible
                              --------------------------------------------
                              AUSTINVEST ANSTALT BALZERS

                                  /s/ illegible
                              -----------------------------------------
                              ESQUIRE TRADE & FINANCE, INC.

                              -----------------------------------------
                              BATTLECREAK INVESTMENTS LIMITED

                                  /s/ First Island  BA
                              -----------------------------------------
                              FERNBRIGG PARTNER, LTD.

                                  /s/ illegible
                              -----------------------------------------
                              TALBIYA B. INVESTMENTS, LTD.

                                  /s/ illegible
                              -----------------------------------------
                              NESHER LTD.

                                  /s/ illegible
                              -----------------------------------------
                              KESHET L.P.

                                  /s/ illegible
                              -----------------------------------------
                              THE KESHET FUND, L.P.

                                  /s/ illegible
                              -----------------------------------------
                              THE ENDEAVOUR CAPITAL FUND, S.A.

                                       11
<PAGE>

     Section 4.13 REMEDIES. In the event of a breach or a threatened breach by
any party to this Agreement of its obligations under this Agreement, any party
injured or to be injured by such breach will be entitled to specific performance
of its rights under this Agreement or to injunctive relief, in addition to being
entitled to exercise all rights provided in this Agreement and granted by law.
The parties agree that the provisions of this Agreement shall be specifically
enforceable, it being agreed by the parties that the remedy at law, including
monetary damages, for breach of any such provision will be inadequate
compensation for any loss and that any defense or objection in any action for
specific performance or injunctive relief that a remedy at law would be adequate
is waived.

     IN WITNESS WHEREOF, the parties hereto have caused this Registration Rights
Agreement to be executed by the undersigned, thereunto duly authorized, as of
the date first set forth above.

                              ADVANCED AERODYNAMICS &
                              STRUCTURES, INC.

                              By: /s/ Carl L. Chen
                                 -----------------------------------------

                                  /s/ illegible
                              --------------------------------------------
                              RHOSSILI INVESTMENTS LIMITED

                                       12
<PAGE>

                                   SCHEDULE A
                                   ----------

--------------------------------------------------------------------------------
INVESTOR
--------------------------------------------------------------------------------
AUSTINVEST ANSTALT BALZERS
Landstrasse 938
9494 Furstentums
Balzers, Liechtenstein
Fax: 011-534-534100
--------------------------------------------------------------------------------
ESQUIRE TRADE & FINANCE, INC.
Trident Chambers
P.O. Box 146
Road Town, Tortola, B.V.I.
Fax: 011-41-41-760-1031
--------------------------------------------------------------------------------
RHOSSILI INVESTMENTS LIMITED
C/o Ultra Finanz Ltd.
Grossmuensterplatz 6, P.O. Box 4401
Zurich, CH-8022, Switzerland
Fax: 011-411-262-5515
--------------------------------------------------------------------------------
FERNBRIGG PARTNER, LTD.
P.O. Box Abbott Bldg
Main St.
Road Town, Tortola, B.V.I.
Fax: 011-972-2-625-9262
--------------------------------------------------------------------------------
TALBIYA B. INVESTMENTS, LTD.
Ragnall House
18 Peel Road
Douglas, Isle of Man
IMI 4L2, United Kingdom
Fax: 011-44-1624-661594
--------------------------------------------------------------------------------
NESHER LTD.
Ragnall House
18 Peel Road
Douglas, Isle of Man
IMI 4L2, United Kingdom
Fax: 011-44-1624-661594
--------------------------------------------------------------------------------
KESHET L.P.
Ragnall House
18 Peel Road
Douglas, Isle of Man
IMI 4L2, United Kingdom
Fax: 011-44-1624-661594
--------------------------------------------------------------------------------
THE KESHET FUND, L.P.
Ragnall House
18 Peel Road
Douglas, Isle of Man
IMI 4L2, United Kingdom
Fax: 011-44-1624-661594
--------------------------------------------------------------------------------
THE ENDEAVOUR CAPITAL FUND, S.A.
The Maduro Building, P.O. Box 662
Wickhams, Cay, Road Town
Tortola, British Virgin Islands
Fax: 1-284-494-3917
--------------------------------------------------------------------------------

                                       13<PAGE>

                                                                   EXHIBIT 10.25

THIS WARRANT AND THE COMMON SHARES ISSUABLE UPON EXERCISE OF THIS WARRANT AND
THE COMMON SHARES ISSUABLE UPON EXERCISE OF THIS WARRANT HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE
SECURITIES LAWS. THIS WARRANT AND THE COMMON SHARES ISSUABLE UPON EXERCISE OF
THIS WARRANT MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE
ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT AS TO THIS WARRANT UNDER SAID ACT
AND APPLICABLE STATE SECURITIES LAWS OR AN OPINION OF COUNSEL REASONABLY
SATISFACTORY TO ADVANCED AERODYNAMICS & STRUCTURES, INC. THAT SUCH REGISTRATION
IS NOT REQUIRED.

                         Right to Purchase 125,000 Shares of Common Stock of
                         Advanced Aerodynamics & Structures, Inc. (subject to
                         adjustment as provided herein)

                         COMMON STOCK PURCHASE WARRANT

No. EL-1                                      Issue Date: August 15, 2000

     ADVANCED AERODYNAMICS & STRUCTURES, INC., a corporation organized under the
laws of the State of Delaware (the "Company"), hereby certifies that, for value
received, LIBRA FINANCE, S.A., or assigns, is entitled, subject to the terms set
forth below, to purchase from the Company from and after the Issue Date and at
any time or from time to time before 5:00 p.m., New York time, through three (3)
years after such date (the "Expiration Date"), up to 125,000 fully paid and
nonassessable shares of Common Stock (as hereinafter defined), $.001 par value
per share, of the Company, at a purchase price of $3.15 per share (such purchase
price per share as adjusted from time to time as herein provided is referred to
herein as the "Purchase Price"). The number and character of such shares of
Common Stock and the Purchase Price are subject to adjustment as provided
herein.

     As used herein the following terms, unless the context otherwise requires,
have the following respective meanings:

     (a)  The term "Company" shall include Advanced Aerodynamics & Structures,
Inc. and any corporation which shall succeed or assume the obligations of
Advanced Aerodynamics & Structures, Inc. hereunder.

     (b)  The term "Common Stock" includes (a) the Company's Common Stock, $.001
par value per share, as authorized on the date of the Agreement, (b) any other
capital stock of any class or classes (however designated) of the Company,
authorized on or after such date, the holders of which shall have the right,
without limitation as to amount, either to all or to a share of the balance of
current dividends and liquidating dividends after the payment of dividends and
distributions on any shares entitled to preference, and the holders of which
shall ordinarily, in the absence of contingencies, be entitled to vote for the
election of a majority of directors of the Company (even if the right so to vote
has been suspended by the happening of such a contingency) and (c) any other
securities into which or for which any of the securities described in (a) or (b)
may be converted or exchanged pursuant to a plan of recapitalization,
reorganization, merger, sale of assets or otherwise.

     (c)  The term "Other Securities" refers to any stock (other than Common
Stock) and other securities of the Company or any other person (corporate or
otherwise) which the holder of the Warrant at any time shall be entitled to
receive, or shall have received, on the exercise of the Warrant, in lieu of or
in addition to Common Stock, or which at any time shall be issuable or shall
have been issued in exchange for or in replacement of Common Stock or Other
Securities pursuant to Section 4 or otherwise.

                                       1
<PAGE>

     1.   Exercise of Warrant.
          -------------------

          1.1. Number of Shares Issuable upon Exercise.  From and after the date
               ---------------------------------------
hereof through and including the Expiration Date, the holder hereof shall be
entitled to receive, upon exercise of this Warrant in whole in accordance with
the terms of subsection 1.2 or upon exercise of this Warrant in part in
accordance with subsection 1.3, shares of Common Stock of the Company, subject
to adjustment pursuant to Section 4.

          1.2. Full Exercise.  This Warrant may be exercised in full by the
               -------------
holder hereof by surrender of this Warrant, with the form of subscription
attached as Exhibit A hereto (the Subscription Form") duly executed by such
holder, to the Company at its principal office or at the office of its Warrant
agent (as provided in Section 11), accompanied by payment, in cash or by
certified or official bank check payable to the order of the Company, in the
amount obtained by multiplying the number of shares of Common Stock for which
this Warrant is then exercisable by the Purchase Price (as hereinafter defined)
then in effect.

          1.3. Partial Exercise.  This Warrant may be exercised in part (but not
               ----------------
for a fractional share) by surrender of this Warrant in the manner and at the
place provided in subsection 1.2 except that the amount payable by the holder on
such partial exercise shall be the amount obtained by multiplying (a) the number
of shares of Common Stock designated by the holder in the Subscription Form by
(b) the Purchase Price then in effect.  On any such partial exercise, the
Company, at its expense, will forthwith issue and deliver to or upon the order
of the holder hereof a new Warrant of like tenor, in the name of the holder
hereof or as such holder (upon payment by such holder of any applicable transfer
taxes), may request, the number of shares of Common Stock for which such Warrant
may still be exercised.

          1.4. Fair Market Value. Fair Market Value of a share of Common Stock
               -----------------
as of a particular date (the "Determination Date") shall mean the Fair Market
Value of a share of the Company's Common Stock. Fair Market Value of a share of
Common Stock as of a Determination Date shall mean:

               (a)  If the Company's Common Stock is traded on an exchange or is
quoted on the National Association of Securities Dealers, Inc. Automated
Quotation ("NASDAQ") National Market System or the NASDAQ SmallCap Market, then
the closing or last sale price, respectively, reported for the last business day
immediately preceding the Determination Date.

               (b)  If the Company's Common Stock is not traded on an exchange
or on the NASDAQ National Market System or the NASDAQ SmallCap Market but is
traded in the over-the-counter market, then the mean of the closing bid and
asked prices reported for the last business day immediately preceding the
Determination Date.

               (c)  Except as provided in clause (d) below, if the Company's
Common Stock is not publicly traded, then as the Holder and the Company agree or
in the absence of agreement by arbitration in accordance with the rules then
standing of the American Arbitration Association, before a single arbitrator to
be chosen from a panel of persons qualified by education and training to pass on
the matter to be decided.

               (d)  If the Determination Date is the date of a liquidation,
dissolution or winding up, or any event deemed to be a liquidation, dissolution
or winding up pursuant to the Company's charter, then all amounts to be payable
per share to holders of the Common Stock pursuant to the charter in the event of
such liquidation, dissolution or winding up, plus all other amounts to be
payable per share in respect of the Common Stock in liquidation under the
charter, assuming for the purposes of this clause (d) that all of the shares of
Common Stock then issuable upon exercise of all of the Warrants are outstanding
at the Determination Date.

                                       2
<PAGE>

          1.5. Company Acknowledgment. The Company will, at the time of the
               ----------------------
exercise of the Warrant, upon the request of the holder hereof acknowledge in
writing its continuing obligation to afford to such holder any rights to which
such holder shall continue to be entitled after such exercise in accordance with
the provisions of this Warrant. If the holder shall fail to make any such
request, such failure shall not affect the continuing obligation of the Company
to afford to such holder any such rights.

          1.6. Trustee for Warrant Holders. In the event that a bank or trust
               ---------------------------
company shall have been appointed as trustee for the holders of the Warrants
pursuant to Subsection 3.2, such bank or trust company shall have all the powers
and duties of a warrant agent appointed pursuant to Section 10 and shall accept,
in its own name for the account of the Company or such successor person as may
be entitled thereto, all amounts otherwise payable to the Company or such
successor, as the case may be, on exercise of this Warrant pursuant to this
Section 1.

     2.1. Delivery of Stock Certificates, etc. on Exercise. The Company agrees
          ------------------------------------------------
that the shares of Common Stock purchased upon exercise of this Warrant shall be
deemed to be issued to the holder hereof as the record owner of such shares as
of the close of business on the date on which this Warrant shall have been
surrendered and payment made for such shares as aforesaid. As soon as
practicable after the exercise of this Warrant in full or in part, and in any
event within 10 days thereafter, the Company at its expense (including the
payment by it of any applicable issue taxes) will cause to be issued in the name
of and delivered to the holder hereof, or as such holder (upon payment by such
holder of any applicable transfer taxes) may direct in compliance with
applicable Securities Laws, a certificate or certificates for the number of duly
and validly issued, fully paid and nonassessable shares of Common Stock (or
Other Securities) to which such holder shall be entitled on such exercise, plus,
in lieu of any fractional share to which such holder would otherwise be
entitled, cash equal to such fraction multiplied by the then Fair Market Value
of one full share, together with any other stock or other securities and
property (including cash, where applicable) to which such holder is entitled
upon such exercise pursuant to Section 1 or otherwise.

     2.2. Cashless Exercise.
          ------------------

          (a)  Payment may be made either in (a) cash or by certified or
official bank check or checks payable to the order of the Company equal to the
applicable aggregate Purchase Price, (ii) by delivery of Warrants, Common Stock
and/or Common Stock receivable upon exercise of the Warrants in accordance with
Section (b) below, or (iii) by a combination of any of the foregoing methods)
for the number of Common Shares specified in such form (as such exercise number
shall be adjusted to reflect any adjustment in the total number of shares of
Common Stock issuable to the holder per the terms of this Warrant) and the
holder shall thereupon be entitled to receive the number of duly authorized,
validly issued, fully-paid and non-assessable shares of Common Stock (or Other
Securities) determined as provided herein.

          (b)  Notwithstanding any provisions herein to the contrary, if the
Fair Market Value of one share of Common Stock is greater than the Purchase
Price (at the date of calculation as set forth below), in lieu of exercising
this Warrant for cash the holder may elect to receive shares equal to the value
(as determined below) of this Warrant (or the portion thereof being cancelled)
by surrender of this Warrant at the principal office of the Company together
with the properly endorsed Subscription Form in which event the Company shall
issue to the holder a number of shares of Common Stock computed using the
following formula:

                X=Y (A-B)
                     ---
                       A
                --------

          Where X=  the number of shares of Common Stock to be issued to the
                    holder

                Y=  the number of shares of Common Stock purchasable under the
                    Warrant or,

                                       3
<PAGE>

                    if only a portion of the Warrant is being exercised, the
                    portion of the Warrant being exercised (at the date of such
                    calculation)

                A=  the Fair Market Value of one share of the Company's Common
                    Stock (at the date of such calculation)

                B=  Purchase Price (as adjusted to the date of such calculation)

     3.   Adjustment for Reorganization, Consolidation, Merger, etc.
          ---------------------------------------------------------

          3.1. Reorganization, Consolidation, Merger, etc. In case at any time
               ------------------------------------------
or from time to time, the Company shall (a) effect a reorganization, (b)
consolidate with or merge into any other person, or (c) transfer all or
substantially all of its properties or assets to any other person under any plan
or arrangement contemplating the dissolution of the Company, then, in each such
case, as a condition to the consummation of such a transaction, proper and
adequate provision shall be made by the Company whereby the holder of this
Warrant, on the exercise hereof as provided in Section 1 at any time after the
consummation of such reorganization, consolidation or merger or the effective
date of such dissolution, as the case may be, shall receive, in lieu of the
Common Stock (or Other Securities) issuable on such exercise prior to such
consummation or such effective date, the stock and other securities and property
(including cash) to which such holder would have been entitled upon such
consummation or in connection with such dissolution, as the case may be, if such
holder had so exercised this Warrant, immediately prior thereto, all subject to
further adjustment thereafter as provided in Section 4.

          3.2. Dissolution. In the event of any dissolution of the Company
               -----------
following the transfer of all or substantially all of its properties or assets,
the Company, prior to such dissolution, shall at its expense deliver or cause to
be delivered the stock and other securities and property (including cash, where
applicable) receivable by the holders of the Warrants after the effective date
of such dissolution pursuant to this Section 3 to a bank or trust company having
its principal office in New York, NY, as trustee for the holder or holders of
the Warrants.

          3.3. Continuation of Terms. Upon any reorganization, consolidation,
               ---------------------
merger or transfer (and any dissolution following any transfer) referred to in
this Section 3, this Warrant shall continue in full force and effect and the
terms hereof shall be applicable to the shares of stock and other securities and
property receivable on the exercise of this Warrant after the consummation of
such reorganization, consolidation or merger or the effective date of
dissolution following any such transfer, as the case may be, and shall be
binding upon the issuer of any such stock or other securities, including, in the
case of any such transfer, the person acquiring all or substantially all of the
properties or assets of the Company, whether or not such person shall have
expressly assumed the terms of this Warrant as provided in Section 4.  In the
event this Warrant does not continue in full force and effect after the
consummation of the transaction described in this Section 3, then only in such
event will the Company's securities and property (including cash, where
applicable) receivable by the holders of the Warrants be delivered to the
Trustee as contemplated by Section 3.2.

     4.   Extraordinary Events Regarding Common Stock. In the event that the
          -------------------------------------------
Company shall (a) issue additional shares of the Common Stock as a dividend or
other distribution on outstanding Common Stock, (b) subdivide its outstanding
shares of Common Stock, or (c) combine its outstanding shares of the Common
Stock into a smaller number of shares of the Common Stock, then, in each such
event, the Purchase Price shall, simultaneously with the happening of such
event, be adjusted by multiplying the then Purchase Price by a fraction, the
numerator of which shall be the number of shares of Common Stock outstanding
immediately prior to such event and the denominator of which shall be the number
of shares of Common Stock outstanding immediately after such event, and the
product so obtained shall thereafter be the Purchase

                                       4
<PAGE>

Price then in effect. The Purchase Price, as so adjusted, shall be readjusted in
the same manner upon the happening of any successive event or events described
herein in this Section 4. The number of shares of Common Stock that the holder
of this Warrant shall thereafter, on the exercise hereof as provided in Section
1, be entitled to receive shall be increased to a number determined by
multiplying the number of shares of Common Stock that would otherwise (but for
the provisions of this Section 4) be issuable on such exercise by a fraction of
which (a) the numerator is the Purchase Price that would otherwise (but for the
provisions of this Section 4) be in effect, and (b) the denominator is the
Purchase Price in effect on the date of such exercise.

     5.   Certificate as to Adjustments. In each case of any adjustment or
          -----------------------------
readjustment in the shares of Common Stock (or Other Securities) issuable on the
exercise of the Warrants, the Company at its expense will promptly cause its
Chief Financial Officer or other appropriate designee to compute such adjustment
or readjustment in accordance with the terms of the Warrant and prepare a
certificate setting forth such adjustment or readjustment and showing in detail
the facts upon which such adjustment or readjustment is based, including a
statement of (a) the consideration received or receivable by the Company for any
additional shares of Common Stock (or Other Securities) issued or sold or deemed
to have been issued or sold, (b) the number of shares of Common Stock (or Other
Securities) outstanding or deemed to be outstanding, and (c) the Purchase Price
and the number of shares of Common Stock to be received upon exercise of this
Warrant, in effect immediately prior to such adjustment or readjustment and as
adjusted or readjusted as provided in this Warrant. The Company will forthwith
mail a copy of each such certificate to the holder of the Warrant and any
Warrant agent of the Company (appointed pursuant to Section 10 hereof).

     6.   Reservation of Stock, etc. Issuable on Exercise of Warrant; Financial
          ---------------------------------------------------------------------
Statements. The Company will at all times reserve and keep available, solely for
----------
issuance and delivery on the exercise of the Warrants, all shares of Common
Stock (or Other Securities) from time to time issuable on the exercise of the
Warrant.  This Warrant entitles the holder hereof to receive copies of all
financial and other information distributed or required to be distributed to the
holders of the Company's Common Stock.

     7.   Assignment; Exchange of Warrant. Subject to compliance with applicable
          -------------------------------
Securities laws, this Warrant, and the rights evidenced hereby, may be
transferred by any registered holder hereof (a "Transferor") with respect to any
or all of the Shares. On the surrender for exchange of this Warrant, with the
Transferor's endorsement in the form of Exhibit B attached hereto (the
Transferor Endorsement Form") and together with evidence reasonably satisfactory
to the Company demonstrating compliance with applicable Securities Laws, the
Company at its expense but with payment by the Transferor of any applicable
transfer taxes) will issue and deliver to or on the order of the Transferor
thereof a new Warrant or Warrants of like tenor, in the name of the Transferor
and/or the transferee(s) specified in such Transferor Endorsement Form (each a
"Transferee"), calling in the aggregate on the face or faces thereof for the
number of shares of Common Stock called for on the face or faces of the Warrant
so surrendered by the Transferor.

     8.   Replacement of Warrant. On receipt of evidence reasonably satisfactory
          ----------------------
to the Company of the loss, theft, destruction or mutilation of this Warrant
and, in the case of any such loss, theft or destruction of this Warrant, on
delivery of an indemnity agreement or security reasonably satisfactory in form
and amount to the Company or, in the case of any such mutilation, on surrender
and cancellation of this Warrant, the Company at its expense will execute and
deliver, in lieu thereof, a new Warrant of like tenor.

     9.   Registration Rights.  The Holder of this Warrant has been granted
          -------------------
certain registration rights by the Company.  These registration rights are set
forth in a Private Equity Line of Credit Agreement and a Registration Rights
Agreement dated at or about the Issue Date of this Warrant.

     10.  Warrant Agent.  The Company may, by written notice to the each holder
          -------------
of the Warrant, appoint an agent for the purpose of issuing Common Stock (or
Other Securities) on the exercise of this

                                       5
<PAGE>

 Warrant pursuant to Section 1, exchanging this Warrant pursuant to Section 7,
and replacing this Warrant pursuant to Section 8, or any of the foregoing, and
thereafter any such issuance, exchange or replacement, as the case may be, shall
be made at such office by such agent.

     11.  Transfer on the Company's Books.  Until this Warrant is transferred on
          -------------------------------
the books of the Company, the Company may treat the registered holder hereof as
the absolute owner hereof for all purposes, notwithstanding any notice to the
contrary.

     12.  Notices, etc.  All notices and other communications from the Company
          ------------
to the holder of this Warrant shall be mailed by first class registered or
certified mail, postage prepaid, at such address as may have been furnished to
the Company in writing by such holder or, until any such holder furnishes to the
Company an address, then to, and at the address of, the last holder of this
Warrant who has so furnished an address to the Company.

     13.  Miscellaneous. This Warrant and any term hereof may be changed,
          -------------
waived, discharged or terminated only by an instrument in writing signed by the
party against which enforcement of such change, waiver, discharge or termination
is sought. This Warrant shall be construed and enforced in accordance with and
governed by the laws of New York.  Any dispute relating to this Warrant shall be
adjudicated in New York State.  The headings in this Warrant are for purposes of
reference only, and shall not limit or otherwise affect any of the terms hereof.
The invalidity or unenforceability of any provision hereof shall in no way
affect the validity or enforceability of any other provision.

                                       6
<PAGE>

     IN WITNESS WHEREOF, the Company has executed this Warrant under seal as of
the date first written above.

                                        ADVANCED AERODYNAMICS & STRUCTURES, INC.

                                        By: /s/ Carl L. Chen
                                            ----------------

Witness:

/s/ David M. Turner
-------------------

                                       7
<PAGE>

                                                                       Exhibit A

                             FORM OF SUBSCRIPTION
                  (To be signed only on exercise of Warrant)

TO: Advanced Aerodynamics & Structures, Inc.

The undersigned, pursuant to the provisions set forth in the attached Warrant
(No.____), hereby irrevocably elects to purchase (check applicable box):

___  ________ shares of the Common Stock covered by such Warrant; or

___  the maximum number of shares of Common Stock covered by such Warrant
pursuant to the cashless exercise procedure set forth in Section 2.

The undersigned herewith makes payment of the full purchase price for such
shares at the price per share provided for in such Warrant, which is
$___________.  Such payment takes the form of (check applicable box or boxes):

___  $__________ in lawful money of the United States; and/or

___  the cancellation of such portion of the attached Warrant as is exercisable
for a total of _______ shares of Common Stock (using a Fair Market Value of
$_______ per share for purposes of this calculation); and/or

___  the cancellation of such number of shares of Common Stock as is necessary,
in accordance with the formula set forth in Section 2, to exercise this Warrant
with respect to the maximum number of shares of Common Stock purchaseable
pursuant to the cashless exercise procedure set forth in Section 2.

The undersigned requests that the certificates for such shares be issued in the
name of, and delivered to ____________________ whose address is ________________
______________________________________.

The undersigned represents and warrants that all offers and sales by the
undersigned of the securities issuable upon exercise of the within Warrant shall
be made pursuant to registration of the Common Stock under the Securities Act of
1933, as amended (the "Securities Act") or pursuant to an exemption from
registration under the Securities Act.

Dated:___________________     _______________________________________
                              (Signature must conform to name of holder as
                              specified on the face of the Warrant)

                              _____________________________________
                              (Address)

                                       8
<PAGE>

                                                                       Exhibit B

                        FORM OF TRANSFEROR ENDORSEMENT
                  (To be signed only on transfer of Warrant)

          For value received, the undersigned hereby sells, assigns, and
transfers unto the person(s) named below under the heading "Transferees" the
right represented by the within Warrant to purchase the percentage and number of
shares of Common Stock of Advanced Aerodynamics & Structures, Inc. to which the
within Warrant relates specified under the headings "Percentage Transferred" and
"Number Transferred," respectively, opposite the name(s) of such person(s) and
appoints each such person Attorney to transfer its respective right on the books
of Advanced Aerodynamics & Structures, Inc. with full power of substitution in
the premises.

===============================================================================
          Transferees             Percentage                  Number
          -----------
                                  Transferred               Transferred
                                  -----------               -----------
-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

===============================================================================

Dated: __________, _____           __________________________

                                   (Signature must conform to name of holder as
                                   specified on the face of the warrant)

Signed in the presence of:

_____________________________      __________________________
     (Name)                             (address)

                                   __________________________
ACCEPTED AND AGREED:                    (address)
[TRANSFEREE]

_____________________________
     (Name)

                                       9

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