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15 July 1968 

Copy €2, of 2 copies 

Totarnges: 14 Page 1 

To: W• L. Dalton Date: 15 July 1968 

Subject: DORIAN Monthly Progress Report From: J. F. Chalmers 

1 June - 30 June 1968 

1.0 GENERAL 

1.1 Activities during the month of June centered on three major areas: 

a) Preparation for and participation in the Fifth Interface Technical 

Sign-Off Meeting. 

Resolution of Aerospace position on major technical problems in 

preparation for a Program Managers Meeting scheduled for midJuly. 

Preparation and review of SOW, CDRL and Form 9 change packages 

necessary to accomplish system level tasks briefed at the last 

SP/DR - SAFSL review meeting at DAC. 

2.0 IN EGRATION 

S stems Inte • ration 

2,1,2 The results of the analog simulation studies to determine appropriate 

tra sfer functions for the right hand control stick were briefed to 

Aerospace and SL-7 personnel, including the MOL Flight Crew, during 

this reporting period. Preliminary K functions have been identified 

and will be subjected to further study and validation on the R-38 simulator 

dur ng the coming report period. 

2.2 Des n Inte ration 

2.2.1 Att nded a special CCB meeting at DAC on 24 and 25 June to effect the 

buy off of the first Mission Module Forward Structure. This buy-off 

included eight DAC ECP's which proposed a total weight increase of 28 

you ds. We obtained a DAC agreement on a total increase of 12 pounds 

and approved the ECP's at that value. 

2,2.2 Sub itted Orbiting Vehicle Weights briefing charts to the MOLSO. This 

brie' ing included status, pending changes to the current design and spec 

valu s, histories and GFE listings. These data were presented for all 

seg ents and the OV. 

2.1 Cre 

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2.2 Design Integration - continued 

2.2.3 Interfaces: Attended the 5th IF TSOM at GE during the week of June 10. 

The following significant problem areas were resolved and signed-off: 

a) Relocation of the computer in Bay 8 upper, and provisioning for: 

removal of the two MDAU units in Bay 8. 

b) LM Installation and Access 

c) Location of EK equipment on GE cold plates 

d) Clearance between the camera and a longeron and the secondary 

DRCts 

e) Space allocation for the secondary DRC's in the aft bulkhead 

equipment well. 

f) Space allocation for the installation of secondary film in Bay 5. 

Among others, the following significant problem areas were defined and 

the appropriate action items and TEM's were defined and scheduled: 

a) Interference between the visual optics assembly and the DAC birdcage structure in Bay 1. 

b) Inability of the Ross Barrel to support the overturning moment 

induced by the current version of the IVS. 

c) Interference between the camera and the IVS space allocations. 

d) Camera kickproofing. 

e) Mounting of secondary cassettes. 

2.3 Effectiveness Integration 

2.3.1 Started an analysis of the reliability (and effectiveness) of a single photographic pass. Some of the objectives of this study are listed below: 

a) Determine which equipments are required to operate and for what 

time periods. (Thus items with a high At can be more closely 

controlled.) 

b) Determine the time required to bring redundant units "on-line" alter 

a failure. (In almost every case examined all further data from at 

least that pass will be lost.) 

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2.3 Effectiveness Integration - continued 

c) Use the above when evaluating the data from the integrating 

contractor's (DAC) models. 

d) Through studies and liaison with contractors (and some subcontractors) 

attempt to improve the above through design changes, specific product 

control, development tests control and operational procedure changes 

(i. e. , software) etc. The latter item is especially important when 

a "critical" pass is known to be next, both units of a redundant 

pair may be operational instead of one in standby. 

2.4 Systems Analysis Section 

2.4.1 An investigation of the dynamic null and bias due to image motion across 

the IVS field-of-view has been initiated. The computer simulation includes 

the actual on-orbit conditions as well as the Beta Tester conditions. Results 

will be obtained for a perfect IVS and the actual hardware. Preliminary 

results indicate that (1) simulator results are pessimistic with respect to 

the actual conditions, (2) in-track x-format effects are the principal 

problem, (3) dynamic null and bias are scene dependent and (4) methods 

of reducing dynamic null and bias below specification values look promising. 

Cloud effects are not included as part of this investigation. In conjunction 

with this investigation, methods of reducing the main optics on-axis smear, 

without LOS IMC, are also being investigated. 

2.5 Electrical Integration 

2.5.1 Task Statements - Tasks were written for the DAC, MMC, EK, MAC, 

GE and HS work statements with the accompanying CDRL lists and Form 9s 

for EMC, power, ordnance and electrical wiring. This was done for both 

segment and integration tasks. 

2.5.2 Held a meeting with GE, EK and DAC at GE to discuss power switching 

transients on the Control Power System (CPS). Aerospace presented 

their evaluation of the GE switching analysis and recommended favorable 

action on the GE deviation request. Subsequently, a TWX was sent to 

DAC and GE granting them the deviation. Aerospace also presented their 

results to date of their analysis that will quantitatively relate transients 

and ripple. Aerospace requested that DAC re-submit their ripple analysis 

including a positive statement about their recommendations. 

2.5.3 Conducted a meeting with GE, EK and DAC at GE on the application of 

the wire harness specification to the vehicle harnesses. The GE mockup 

at Valley Forge was used for demonstration purposes and several contractor 

questions were answered as well as action items generated. 

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2. 6 General 

2. 6. 1 Coordinated preparation and review of SOW, CDRL, and Form 9 

change materials for the System Level Tasks materials briefed 

at the last SP/DR SAFSL review meeting at DAC. 

3.0 DAC 

See Secret SAR Monthly Progress Report. 

4.0 GE 

4.1 Ground Systems 

4.1.1 A DDS-1/EDCTU working group meeting was held at Radnor to review 

GE test planning progress. A detailed review of test objectives, 

hardware description, test requirements and software testing was 

conducted for both DDS-1 testing at King of Prussia and for DDS-1/ 

EDCTU testing at Huntington Beach. A better understanding of 

these programs resulted and several significant problem areas 

were assigned action items; they were: 

a. GE inability to interface with DAC ACTS prior to flight 

b. Development of requirements for EG-48 Dynamic Simulation 

c. EDCTU schedule incompatibility at DAC 

d. Resolution of EG-28 electrical loads problem. 

4.1.2 Considerable time has been spent at TSOM #5, the TD meeting, subsequent 

Exchange Hardware meetings and others in attempting to resolve 

several difficult areas relating to the Ground Test Program. These 

areas are still unresolved although the position of this office is now 

clear. These problems include: 

a. Definition of requirements for MMTE at Rochester and the 

subsequent definition of the necessary AGE to meet those requirements. 

b. Resolution of the requirements for refurbishment of the 113T 

vehicle to provide EK an engineering model. 

c. Definition of the LM Thermal Substitute supplied by DAC to GE 

(which GE subsequently supplies to EK). Presently inconsistent 

test requirements and hardware are in the baseline. 

4. I. 3 Definition of a new ground test plan has been discussed with GE and 

has been tentatively agreed upon. It is intended that this document will 

contain the contractual baseline flow, together with sufficient 

descriptive detail to define the entire test program. In addition to 

this effort, work has begun to define the integrated test program for 

the Statement of Work. 

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4. 1 Ground Systems - continued 

4.1.4 The GE PDR package on their proposed (ground) alignment scheme 

was received in-house. This document is under review. Our comments 

and proposed Aerospace position are to be provided at an Aerospace inhouse discussion on 12 July. 

4.2 Crew Systems 

4.2.1 Continued work on rewriting a portion of GE AVE CEI Specification 

relative to the ATS and Controls & Displays Subsystems. 

4.2.2 A meeting was held on Controls & Displays design status at Radnor, 

18-19 June. A major result of the meeting was the establishment of a 

procedural method for handling detailed changes to the C&D configuration 

as the design evolves. The meeting indicated the need for continued 

optimization of the design of the left hand stick. Also, considerable 

additional design effort is required to provide protection of critical 

components on the GE panels (eye-pieces, projectors, sticks) during 

non-use periods. 

4.2.3 ATS problems identified at TD meeting of 20-21 June include off-axis 

optical resolution performance and a possible eye hazards condition. 

These problems are being actively worked. 

4.2.4 An ATS alternatives meeting was held at Radnor 23 June through 27 June 

with participation of GE, DAC, ITEK, Aerospace and the Air Force. The 

major results of this meeting were: 

a) Decision to continue with the two fairing approach 

b) Withdrawal by GE of the humidity requirement under the fairing 

when vehicle is not in controlled environment. 

c) New definition of GE/DAC interface at penetration fitting which 

gives GE responsibility for thermally controlling temperature of 

window. 

d) Identification by GE of potential requirement of local stiffening of 

LV structure at scanner mounting points in order to eliminate the 

structure vibration modes from being coupled into the scanner servo 

response. (DAC will look at means for accomplishing this stiffening.) 

e) GE modified a method proposed by DAC to reduce the sensitivity of 

the ATS pointing errors to structural deflections. GE is examining 

this in greater detail. 

f) Products from molecular sieve do not contribute to the contamination 

problem as far as the ATS is concerned. 

g) A plan was formulated to resolve shock problem (incurred by fairing 

ejection). 

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4.3 Systems Analysis 

4.3.1 Considerable effort was devoted to a review of the Tracking Mirror 

drive (Drive A) control stability problem. Further refinements have 

been made on analyses of the Drive A stability/performance problem 

due to flexure stiffness. There is no change in the GE conclusions nor 

in their position that they have a requirement for minimum stiffness of 

the flexures as spelled out in ICN 2A to IF 101.2. 

4.3.2 Efforts were made to have contingency analysis work reported on by 

GE during technical review meeting the week of 17 June. Lack of 

organization of this type of work resulted in poor coverage of this subject 

and has pointed up the need for planning and coordination. Work has been 

conducted on the needed organization. 

4.3.3 The ground work was laid for achieving agreement between GE and DAC 

on the ACTS gyro data. It became apparent to Aerospace and GE that 

vehicle vibration sensed by the gyros had not been previously considered 

and no interface spec provisions were in existence. GE is now beginning 

to address the general problem of performance degradation due to vibration 

sensed by the gyros. 

4.3.4 Equations and Cost Proposal Changes (CPC's) from version zero of the 

Part II Software Specification were reviewed and commented on in 

response to Aerospace action items resulting from the Software PDR. 

Non-uniformity of coordinate systems used by GE was heavily criticized 

in the comments. Also criticized was the GE incorrect approach to 

normalization of the Euler parameters in the D matrix of the attitude 

determination CPC - a correct approach was outlined. 

4.4 Navigation and Control 

4.4.1 Image Velocity Sensor (IVS) - Westover AFB was visited to explain 50 '1 

data requirements. The Aerospace Corporation will process the data to 

better define the optical input to the IVS, i.e., energy and modulation 

under conditions of snow, clear water, clouds, varying sun angles, etc. 

4.4.2 An attempt was made during the June TSOM to solve the interface problems 

of IVS weight, e. g. location and thermal input to the Ross barrel between 

GE and EK. 

4.4.3 GE presented their analysis of the IVS "dynamic null" problem and several 

possible "fixes". The Aerospace Corporation suggested that an acceleration 

threshold actuating an inhibit and memory be investigated by GE. 

4.4.4 The GE IVS tester for DSS-1 was reviewed by Aerospace and felt to have a 

number of serious limitations. GE was asked not to pursue their design 

until some better ones can be suggested to them. 

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4.4 Navigation and Control continued 

4.4.5 Bearing Program - The Aerospace Corporation has completed tests 

and published a report on the torque noise of large diameter ball bearings 

for use in Drive A performance analysis and design. Aerospace loaned 

GE a set of small bearings from the Aerospace test to check correlation 

on the brassboard. Aerospace is building a bearing locking fixture for 

further tests using large bearings. 

4.4. 6 Alignment Monitor Set (AMS) - At the technical review meeting, GE 

presented their analysis showing that the light source at Location "A" 

is not satisfactory. They also said that Location "X" will meet spec. 

Aerospace is studying the requirements as related to the mission operations. 

5.0 EK 

5.1 Reliability 

5.1.1 As a result of the Reliability and Redundancy Review on 10-12 June, it was 

determined that the EK ground rules for assessing reliability are not in 

accordance with the Work Specification. When the EK analysis is based 

upon the Work Specification, there is only a 0.88 probability instead of the 

required 0.914 probability of achieving mission objectives. A policy TWX 

was prepared directing the contractor to establish a baseline redundancy 

and reliability assessment consistent with the requirements. In addition, 

EK was directed to redesign the alignment system and the mirror launch 

locks to eliminate the unacceptable features. 

5.2 Document Reivew 

5.2.1 This office is reviewing the Component Qualification Test and Maintainability 

(PLOT) documents. Both documents required additional work by the 

contractor. 

5.3 Program Managers Meeting Preparation 

5.3.1 A review of the significant open interface problem areas was conducted 

in preparation for the Program Managers Meeting. This office has 

prepared Aerospace positions and recommendations on selected items. 

5.4. Displays and Controls 

5.4.1 An end-to-end review of displays and controls to be included in the Dorian 

payload was conducted by the contractor, Air Force (Engineering and Flight 

Ops Crew), and Aerospace. Formal minutes were established with crew 

signoff for adequacy of concepts except where specifically noted. 

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5.4 Displays and Controls - continued 

5.4.2 A technical baseline for the monitor and alarm system was developed 

and coordinated with the flight crew. Contractor direction is in 

coordination. 

5.5. Performance Analysis 

5.5.1 The Aerospace and EK static optical performance analyses are in agreement when assuming the same manufacturing errors. 

5.5.2 The photographic performance is uncertain because of the uncertainty 

in film AIM characteristics. Presently, a variation of approximately 

60% from low to high estimates exists. 

5.5.3 Analyses of the on-axis performance as a function of sun angle and smear 

rate is in progress in cooperation with other Aerospace departments. 

5.6 Safety 

5.6.1 The film flammability problem tests completed to date and proposed tests 

were reviewed with DAC personnel. Appropriate subsystem level tests 

and EK participation required definition. 

5.7 System Development 

5.7.1 The "A" Chamber Review has resumed with the receipt of backup material 

requested by Aerospace. A preliminary report is being prepared. The 

Acoustic Chamber Facility is almost complete. The instrumentation is 

being installed, and transducer checkout will begin in about two weeks. 

5.8 Interface Definition 

5.8.1 DAC definition of LM environment design parameters to be included in 

several SAFSLs and SA 27 continues to be incomplete and unsatisfactory. 

Coordination meetings held during 9-11 July could not establish firm 

and unambiguous values. 

5.8.2 GE and EK reported dissatisfaction with the DAC Lab Module thermal 

design. Aerospace analysis of DAC data indicates that LMTS may be 

usable as designed. GE and EK have been requested to submit analyses 

and comments. 

5.8.3 Numerous interface ICN's have been signed off, including the MMTE 

Requirements Definition document. 

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6. 0 DATA SYSTEMS 

6. 1 EDCTU Substitutes 

Technical review of EK substitutes for use in the EDCTU were 

conducted and briefed to SO management. It was concluded that 

the nature of the EDCTU configuration does not allow conclusive 

EMI testing and that fully representative EK substitutes are 

not justified. A minimum approach which provides for starting 

transients and major ripple contributors to conducted EMI is 

recommended. 

6.2 Command 

A meeting was held at GE on 4 June to resolve the command interface 

between the backup decoder and the support module. GE and DAC 

reached agreement on pulse widths and numbers of commands. 

One point still in question is whether a level or a pulse should be 

supplied to GE for establishing a clear mode inhibit. GE took an 

action item to present their requirements to DAC. 

During the TSOM #5 at GE on 11-14 June, a timing problem involving 

the writing of edge data by the experiment controller was presented 

as an interface problem. The conflict which arose was the requirement to write edge data simultaneously with the movement of the 

camera shutter. During the 27 June meeting, EK provided updated 

timing information for the camera operations and presented the 

timing requirements. The requirement to write each data simultaneously 

with shutter movement was presented as a firm requirement and 

GE proposed a software solution to the problem which was acceptable 

to both EK and GE. An ICN will be prepared by GE for signoff at 

the next TSOM documenting the final resolution to this problem. 

The ground software PDR, held at Sunnyvale on 24 through 28 June, 

revealed no major problems. The command and control programs 

for message generation and event generation were reviewed along 

with the total package. 

6. 3 Critical Telemetry 

A TEM was held at GE with representation from DAC, GE, EK, 

and SO/Aerospace. The meeting was conducted to discuss the 

telemetry configuration and to verify that essential data would be 

obtained through redundant hardware in case of single circuit 

failure within the telemetry system. 

DAC provides redundancy for essential measurements by blocks, 

switchable by command. GE has no redundancy, but identified 

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6.3 Critical Telemetry (continued) 

no measurements as mission-essential. EK has redundant 

transducers for critical measurements, but the GE multicoder is 

a single component whose failure would prohibit transmission of 

any data from the mission payload. 

7.0 ORBITAL OPERATIONS 

7.1. Mission Analysis 

7.1.1 Mission Planning and Evaluation (MP&E) 

7.1.1.1 The part I Specifications for the Mission Planning Software (MPS) 

and the Mission Correlation Data (MCD) Software 'submitted by 

TRW are currently under review. 

7.1.1.2 The TWONDER computer program, a study version of the MPS, 

has been delivered and is undergoing final checkout. Solutions 

to problems encountered in revs of very high target density have 

been identified and are currently being incorporated into TWONDER. 

7.1.1.3 Delivery of the basic 1700 constituents of the study target deck are 

expected from Foreign Technology Division by the end of July. 

Some work has already been done in terms of preparation for the 

expanded deck of approximately 13,000 targets. The TWONDER 

program is undergoing checkout with a 13,000 target deck, each 

of which has the same location as in the study deck but has "fake" 

data in the rest of the format. 

7.1.1.4 A CCN to the basic TRW MP&E contract to cover the period from 

1 July through 1 January 1969 has been negotiated. An additional 

task is included in the CCN: the development of a binary interface 

tape (BIT) capability out of TWONDER; the development of a 

Monte Carlo simulation program for targeting studies; Part II-type 

documentation for TWONDER; and TWONDER maintenance. 

7.1.2.1 In response to direction given in an April briefing for Gen Stewart 

which highlighted the results of an intensive study of the 

capabilities of the MOL/DORIAN System, a similar briefing for 

Dr. Flax was prepared. This briefing was given at the 24 June 

Program Review Council (PRC) meeting and the following 

recommendations were made: 

a. 

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7.1.2 

7.1.2.1 b. Authority to Pioceed be granted for: (1) CCN to existing 

GE contract in early FY 1969 for ADC software and simulation 

equipment; (2) RFT for ground software in accord with a 

January 1969 "go ahead". 

C 

7.1.2.2 The following direction was given at the PRC: 

a. Process the necessary changes to the GE contract that will 

ensure minimum impace on the ADC software if is 

incorporated. Maximum expenditure to be approximately 

$100, 000. 

b. Prepare a ten-page paper on the capabilities of the 

MOL/DORIAN System for dissemination to the intelligence 

community. 

c. Prepare a cost proposal with respect to incorporation of 

into the MOL/DORIAN System for total program life cycle. 

d. Hold up any RFP effort on ground software until after Items 

a. and b. have been satisfied and further direction is given. 

.1111.1111.11111.1111.111.1 1111.111111. 

7 1 2.3 As a result of the above direction, the following actions have 

been taken: 

a. Effort was initiated with GE to define the technical Contract 

Action Request (CAR) necessary to accomplish the ADC 

software definition of through preliminary design. 

b. A paper was prepared for and transmitted to Dr. Flax 

(BIF-107-50006-68). 

c. A cost proposal is being prepared and the proposed Contractor 

Statement of Work and Preliminary Part I Specifications are 

being appended thereto. 

7.1.3 Cueing 

An operational philosophy associated with on-board briefing of 

the flight crew prior to targetting operations is being developed. 

This philosophy will cover use of both the on-board cue presentation 

subsystem and alphanumeric display devices. Discussions are 

currently being held with those agencies. 

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7.2 COMMAND AND CONTROL 

7.2.1 Conducted 804 Command Control Software PDR at GE, Sunnyvale, 

during week of 24 June. Action items generated are in work and 

should be completed in mid-August. Aerospace is responsible 

for providing comments on the Item Test Plan by 1 August. 

7.2.2 The review of the GE Integrated Command Definition Specification 

and Hardware/Software Limitation Specification has been completed. 

Detailed comments have been prepared for discussion at the 8 July 

FOPG/OSG splinter group meeting on the subject. 

7.2.3 The GE role of integrator for MOL-peculiar STC (3800) software 

referred to in the white progress report (CSR-0200(4107-10)MPR-1) 

requires interfacing of the TRW MP&E programs with DAC and 

GE programs performing the following functions: 

a. Flight plan generation and update. 

b. Uplink message generation. 

c. Telemetry prediction and analysis. 

This system also makes use of the TRW reentry program, and 

both general and MOL-peculiar features of the advanced orbital/ 

ephemeris subsystem, all operating in the STC environment 

(executive, data base system, control and display system). 

7.3 OPERATIONS INTEGRATION 

Developed a briefing in conjunction with the Air Force to show 

relationship of ground operations planning and activities to crew 

and OV operations. The briefing was developed specifically to 

brief J. Bleymaier and to present to the Flight Operations 

Planning Group (FOPG) in July. 

7.4 AVE SOFTWARE 

Comments were prepared on the Version Zero, Part II Specification 

and the Equations Notebook for GE AVE Software. Of particular 

concern was the lack of standardized coordinate systems used by 

GE throughout these documents. A report was prepared to be 

followed up by discussions with GE (see paragraph 4. 3.4). 

An analysis was conducted on an interference problem associated 

with taking photos at 1.5 sec intervals. A software solution was 

determined which would alleviate this priority interrupt processing 

and edge-data write-out conflict problem. 

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7.4 AVE SOFTWARE (continued) 

An initial interface specification between GE AVE and C&C 

software and EK hardware was reviewed, and a meeting was 

held during the TSOM #5 to critique the document. 

AUTOMATIC CONFIGURATION 

Wind Tunnel Tests 

Participated in a pre-test meeting for the Martin Company's 

Wind Tunnel Test Planning of the Flight 6 and 7 configuration. 

8.1.2 Reviewed test data of the NASA Ames Wind Tunnel Test of the 

60 degree Support Module Fairing. Results indicate satisfactory 

accomplishment of objectives. 

8.2 Documentation 

An in-process System Engineering Documentation Review was 

conducted for Flights 6 and 7 to assure an orderly and adequate 

development of hardware requirements. Technical comments 

were provided to DAC and GE for the purpose of making necessary 

corrections prior to the completion of the effort on 15 July 1968. 

8.3 

8.3.1 

Reviews and Studies 

Conducted a study to eliminate test redundancies which resulted 

in an updated draft of Flights 6 and 7 test flow. 

8.3.2 Conducted a review of GE proposed acoustic test facility to assure 

compatibility with hardware requirements. 

8.3.3 A Technical Exchange Meeting was conducted on the Flight 6 

and 7 thermal requirements. The contractor progress was 

reviewed and related action items assigned to contractors for 

further study. 

8.4 Data Systems 

A technical interface meeting was supported at GE on 9, 10 and 

11 July 1968. At the Electrical Working Group meetings, the 

following problern‘ areas were identified. 

8.4.1 Instrumentation and Telemetry 

The instrumentation and telemetry configurations for these vehicles 

has not been established to date. Primary reason for this is that 

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EK has not supplied the PCM and FM requirements to GE. 

This was identified as a pacing item by GE, DAC and Aerospace 

at the wrap-up meeting. A TEM is planned for early August to 

try to identify and scrub the measurements. 

8. 4. 2 Command 

EK identified the hardware/software interface they desire 

for the recovery section. A TEM was scheduled for 8 August 

1968 to discuss this after the preliminary requirements submitted 

by EK are reviewed by GE. 

Definition of the inhibit signal characteristics from backup decoder 

are being reviewed by both DAC and GE. 

8. 4. 3 Monitor and Alarm 

No Monitor and Alarm interface requirements by EK have been 

identified to date. All malfunction detection and isolation for 

the EK equipment is intended to be accomplished via telemetry 

and ground analysis. 

9. 0 MANAGEMENT SYSTEMS 

9. 1 A Schedule Control System coordination trip to EK was made 

during the reporting period. A complete review of the Schedule/ 

PERT planning network was accomplished. Direction was supplied 

that will allow the contractor to expand his schedule to include dates 

for flight four and subsequent. The additional detail is to be 

supplied at the rate of one flight each month until the total 

program is detailed. A tour of the Test Facility and a status 

report of the progress to date was provided. From the inspectionand a review of the data presented, this facility should be 

operational early in 1969. 

J. F. Chalmers 

JFC/mg 

IRV DORIAN