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MOL MONTHLY PROGRESS REPORT 

For 

1 October 1968 through 31 October 1968 

(1, 

James F. Chalmers 

Systems Engineering Director 

Management Systems 

Walter C. Williams 

Vice President 

General Manager 

MOL Division 

HANDLE VIA BYEIVIAN 

CONTROL SYSTEM ONLY DONN 

DEC 9 - 1968 
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1.0 GENERAL 

As during September, major effort during the month of 

October was directed toward technical preparation for contract negotiations 

on the supplemental agreement. 

2.0 LOADS 

Further work has continued on Load Cycle 4. This work has 

been principally in the following three areas: 

Model revisions, i. e. , localized forward mount stiffness change, 

head to barrel relative stiffness change, and recent barrel skin modifications 

have been defined and are due from the associate on 20 November. These 

data will be utilized in the preparation of a revised dynamic model and 

subsequent calculation of associated modes. 

GE, based upon the more refined definition of their equipment, 

has requested 11 new additional points for relative displacement 

determination. These points have resulted from the integration of their 

requirements with all involved associates. MDAC-WD is preparing the 

new relative displacement transform matrix for submittal to MMC. 

It has been noted that an increase of cant angle of the Stage 1 

engine sub-assemblies will reduce the OV moments and overall lateral 

loads significantly. An approximate change of -10% in load has been 

reported for a cant angle of increase 3-5 degrees. Ultimately a new OV 

Stage 1 shutdown load condition analysis based on a selected cant angle 

will be required. 

3.0 ALIGNMENT 

A tentative agreement has been reached with General Electric 

on aligning the system by means of the flight alignment monitoring system 

(FAMS). General Electric is currently working with Eastman Kodak 

-sSEGREf Dow 
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3.0 ALIGNMENT - Continued 

on the interface of the alignment system. The current plan is 

to use reflecting surfaces (cubes and prisms) on the back of the mirror. 

It is expected that the entire interface will be worked at the upcoming 

TSOM #8. 

4.0 IMAGE VELOCITY SENSOR 

The engineering prototypes were received by General Electric 

from both Goodyear and Hycon. Evaluation of prototypes has commenced 

and adjustments are being made. No particular problems have been 

incurred other than the normal developmental changes. 

A change is in the process of being negotiated in the specification 

for the IVS so that there will be more transmission of useable energy 

through the system. The delivered units were manufactured to the old 

specification and part of the adjustments being performed are to bring 

the instruments into the new specification range. The latest estimate 

of brightness has been delivered to General Electric in order to provide 

them with typical scene brightness and modulation. The information 

expands the definition in the specification in order to make the specification 

more easily interpreted. General Electric has requested further details 

on spectral information which will be provided to them as soon as it is 

possible to determine the figures. 

5.0 FLIGHTS 6 AND 7 

Interface documentation was reviewed and updated during 

Flights 6 and 7 Technical Signoff Meeting (TSOM) #2 held at MDAC-WD, 

28 October 1968 through 1 November 1968. The interface documents 

will be 75 percent complete by the System Design Review (SDR); the 

remaining 25 percent is mainly composed of design data that will not 

be generated until Phase II. 

DON 
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5.0 FLIGHTS 6 AND 7 

Incremental System Design Review Meetings were also held. 

These meetings were utilized for an in-process review of the System 

Level Specification Tree, hardware list, draft versions of the Ground 

Test Plan - Part I, and technical comments to the SAFSL Exhibits 

pertaining to Flights 6 and 7. 

Contractor inputs and revisions to the SP/DR (SS-MOL-1B) 

as a result of Flights 6 and 7 Phase I have been reviewed. Comments 

were returned to MDAC-WD for incorporation in Phase II. 

6. 0 ADVANCED DATA SYSTEM (ADS) 

The Aerospace Operations Directorate has been working to 

provide Satellite Control Facility (SCF) with the MOL requirements. 

This effort was originally scheduled to be accomplished approximately 

six months later in time but the situation required that the material be 

provided immediately. It will now be necessary to work closely with 

SCF in order to avoid misinterpretation of MOL requirements, to evaluate 

alternate proposals to satisfy these requirements and to understand and 

react to the final proposal. 

-SECREF DORIAN