EFFECT ON OXCART PROGRAM IF AIRCRAFT S/N 121 IS USED FOR SPEED RECORD ATTEMPT

Created: 8/19/1964

OCR scan of the original document, errors are possible

MEMORANDUM FOR: Deputy Director for Science and Technology

on OXCART Program ifs Used for Speed Record Attempt

he initial look at the problem indicates that two separate and distinct effects would resultow were to be usedpeed record attempt, one resultingross risk to the projected technical time schedule of the program and the other resulting in an Immediate gross security compromise. No equipment effect would result on the SKYLARKontingency capability) programlready hasomplete set of reworked servos so that none would have to be diverted from SKYLARK aircraft and would only require that the engines, which had been removed during the recentpeed trial deliberations be reinstalled. However, the flight test support to SKYLARK will be diluted since Lockheed flight test personnel will be concentrating on the speed run. The support to SKYLARK is in the area of check-out and test of ancillary equipments for SKYLARK, such as,ingle side band and countermeasure packages.

The gross risk to the projected technical time schedule alluded to above takes into consideration the fact thats the primary flight test vehicle (seeor roles of the four2 flight test aircraft), and, as such, is very heavily instrumented to measure and record flight test results. Any damage to this aircraft, or to consider the ultimate, loss of this aircraft, would seriously retard the progress of the program until another vehicle could be similarly Instrumented. The extensive wiring and large number of very close tolerance sensors installedre such that it would take approximately two months to similarly equip another vehicle in the eventere lost. To risk serious impairment of the program objective solelyropaganda advantage hardly seems justified.

The overall program will be set back because of the curtailment of flights necessary to solve many of the technical problems still plaguing the program. ould be removed from the program for three to four weeks which would equateost meaningful test flights.

OXCART TOP SECftfft

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SUBJECT : Roles of tho Four2 Flight Test Aircraft

1. his airpluno laprimary flight tost vehicle. It is the only vehicle completely instrumented to teat out the internal aerodynamics of tho propulsion system. It la utilized to flight test all of the ejectorthe various by-pass door configurations, and the tertiary doors. The schedule for the variable area by-pass at the engine face (onion sllcor) la being developed on. The aircraft Is the2 which has beon flown to. See Attachment II for total flight times and number of flights above various Mach numbers. The very limited number ofnd above flights is due to the fact that, being the primary flight test aircraft to teat all of tho nodiflcations noted above, rarely is flown in the same configuration on two successive flights. Since it is also the8 equippod, allt will be used initially to verify cycling temperatures encountered between high speed flight and low speedprior to subjecting the plastic2 to such an environment.

his airplane la being used for inlet and fuel control development. It has been assigned to Pratt and Whitney tests for the next throe months to develop and optimize the main fuel controls, both Bendlx and Hamilton Standard.

his airplane Is being readiedong range, high speed mission to determine the cruise fuel consumption characteristics of The mission to

be flown. and the majority of the flights will be at. Subsequentuccessful9 Is scheduled to be turned over to the Detachment.

4..his airplane is being used to flight test the various countormoasures equipment being developed to enhance the survivability of

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VIA BYEMAN CONTROL SYSTEM

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OXCART

SUBJECT : Summary of Time and Flights Above Mach No. Noted as

55

52

44

28

19

15

4

48

44

29

12

3

2

52

43

2

13

1

43

31

34

30

3

43

39

34

25

5

1

25

8

7

6

6

4

7

7

6

2

7

7

7

7

' 4

VIA BYEMAN

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Original document.

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