The sun., 1891-05-17
JUST HOW MAN WILL FLY.
E0r NJ FLAPPING TITS ARTIFICIAL
Y ~, WINGS, BUT BT SOARING.

Il
sss hlis veyasi.s viii be on the Aero.
siass frincipts-Austraiia Has Come the
| ID, Nearest 10 soivlng the Great Frosiem.
Prom Ms Washinqfon star. ,
Men will yet learn how to Hy. Prof: Langley.
the Shs DAY II
oSss. SsSsnsS 70 sHs much f ensear ts
agemeKt to thinkers Who hope tnat mankind
& SOM day sscns domain 1 the 2,
Gear d that Of s6es. The distIns % she d sesn.
q cp
woyld be on the kite pinciple.
whfsh have not been recognized Hitherto, hitherto.
soaS hsssTr r Than the
sS ne whes sRd SsSsf %sa Bss
ssen ssSasn 40 shs ANIMAL
pSssa ~ tss
,S ;s.ISsd 4, Ss q i 4. TSsp;saSs % q isss ssSSs
sssaass nsa .ss sasrsnasa %SsP1sts isw
be sf: he E e ss 4 ;s + %s:
the balloon and nil other, such lifting devices
&c impracticahie; gns lighter than air can
Ssp!tes to . vacuaP. bailoorinv to-day Il
ard 10 the nature Of things i can % Iss never sst
E much b further: n ,Alnmnum is light for metal,
July assS such o PRAY %Sas
has hecome Of those aluminium trains Of cars
that were to BE- run through the MIR from Uhi-
SaiES irts. 70 NsV fGrk Six months ago At sixty
There q 4 school Of flying machine inventors
ssmnci 10 their idea Is to sustain sSh tSeis con.
nut !hey doubtless Il. forget tnnt tho best Flyers
n Desios%anss whom sn nesessass Sy assIss ior
level around. Is obliged to take quite run
fltst: iEen. nnpping his wings with q, violent
Sna hs sSfs rsa as so nN s'p ss
%ts fS ,sSs,;.s SSIs6 hold: Elm
Honsi broad sweep Of his po owei ful wings 20 to The
Spp6sins to each movement Of the % suspsnded ended
Sthsr the gentle force necessary to maintain
~ Thsss M II Drineiplss which The eagle applies for
!Se theSry 81 msshanles: i /. only necessary y
True: the bird is lighter In proportion to iss
tled With warm air from the IunGa. But the
difference in this respect is not very mnterlai.
ssr.winss. Power Il 10 nan them is not @ what NJ III is
Teauirea. inasmuch as the start can be made
feom height: what 10 wanted /. the knowl;;
has given the fowl az. to how to adapt The
angles OF the wings TO the air currents.
sxpsrimen,ins With What he % is aiiemntinS mt s Is
70 produce machne adanted to hotation upon
ss sms o sh. p1nsp. sHa s
working on in the trick done with playing
gallery Of the biggest theatre in the United
StAtss: distrtbu,ing them one after .n9lher
the air currents. The scrap oi pasteboerd is
hsssier than the atmosphere; but. jadicio1sIy
TOO. even q thrown outdoors. surprising that it
m6aafe Its surface 10 the winds.
Nkat can be done in rhis way may be accom-
81 DISPUTED It viii be sufficient to reier 10 y
inz machine recently patented in Anstralia. It
Weighs altogether nineteen rounds and IT,
n diameter. filled with compressed air. The
compressed atr supplies power ior a smal!
St tie e; cylinder. Which WORKS . fan propeller:
TY the backbone on either side Is attached
Mns bs sG VIZ @s
fer 5s 5 sns q %sds onS
sst sppfoach to the practicable flying machine
cf The future thus far attained.
ss hui: Pe
strntted recently machine for producing an
naS al H a. ws, weh on as IL. l. .ss 70 .shyp
ssp.rimsntins 81 vi I'll this for Tie rurpose Of
shss he has made IS that the faster s9eh pisne
air. Is to
Eropel i. Truly. what an as onishing fact is
8n land q IN the water The greater
Il: but In the atmosphere the case is the very
reverse. and the faster you gc the less exreIl-
ticket for the lightning express would only cost
so Of ns srss az sSx
tp mention the saving In time and salaries to
IN l!se manner Mr.. Langley ha, demon.
power Necessary: , .,, 10Y can n con. on
iii iiiS.trate ate the propositIon.'. Take an. ordinnry
& sns saY FSsS ais v ~
seIao shiIile aud skim IL horzontsIlY ,. through
ae aWiy sSH, GoI vii H0 .ak i Es sssy es .ss ssH
NAV bow boy Wvilt telI yoa:, And w1y is tins thasf
6lmnly because the SllpGie OF tue rIBHl Ep0lt,
is upheld by the currents Of mir. |
IS a bird is IN flight. and the swlitcr they 70
Ihe moro easily they are so sustained. This
.eoms very SURPRISING h%t @ 's. "s SEQ I 4 Is not
ihin foe2 II so you did not stop, long in ono
place. lest It break oenenth yon. You knew In
that tho fastor you went and the |
niotc your weight was ia this manner an Iistrh.
ltsd the loss thickness OF Ice was needed to !
support you. II you were able to travel fas. |
You, likewise that other fluid called air II you
could only achieve sufficient speed.
Now you have the two I'm mportant principles |
,r witch the fiyinx Of tho future Wil! bo based.
Nrst the bird idsR must be applied to utilize |!
he currents OF air Tor support IN that ole- |
iisnf. All Gyin. machines that dlspenssd with |
ii more or less degree. but they have, almost
!. bird relies Tor hight. npon happinG., The |
models ior such contriyances. at The Patent
5iice here show this snnciortly well. Aero.
pInues Will represent Tho birds wings In the |
ltrsliip OF the time to onmo. such. Mt VII |
svsnts. is lbe surmls.. and the likelihood
sssms to be that u steam engl9S OF small a. |
motive force. Secondly. tho motive force re;
Iuifed vii! no least for the greatest speed. and |
10 nFODort rtlOn0tOlY,