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Chapter III - DYNA-SOAR KILLED, <strong>MOL</strong> APPROVED<br />

29<br />

Figure 23. <strong>MOL</strong> Model<br />

Source: CSNR Reference Collection<br />

Defense Secretary Gilpatric—wrote to McNamara: “I<br />

hate to see us getting into a position of abandoning a<br />

program such as Dyna-Soar and start a new program<br />

which is based upon program data and costs that could<br />

be quite optimistic. In addition, I think it is going to be<br />

very hard to make clear to Congress and the public the<br />

basis for the action that is proposed.” Zuckert asked for<br />

an opportunity to discuss the subject with McNamara, “if’<br />

the final decision has not been made. 15<br />

Dr. Flax, meanwhile, prepared and forwarded to Zuckert<br />

his views on the “unwise” OSD proposal to cancel Dyna-<br />

Soar. He also noted that DoD had given no serious<br />

consideration to using the X-20 as a possible element<br />

of any space station program, and he commented on<br />

(among other things) the possible additional costs<br />

involved in using the Gemini:<br />

With the Gemini vehicle, even with a large<br />

number of recovery areas, it may be necessary to<br />

provide backup systems for considerably longer<br />

periods of up to a day or more. Also, in order to assure<br />

the capability for emergency sea recovery, it would be<br />

necessary to keep naval and air elements deployed on a<br />

continual basis over the entire period of manned space<br />

station flight. Costs of such deployments over the period<br />

of a year could easily negate any savings associated<br />

with any cost differential between Gemini and X-20 type<br />

vehicles. Even if emergency situations are ignored, the<br />

cost of regular monthly recoveries at sea for Gemini reentry<br />

vehicles would substantially exceed the cost of<br />

land recovery of X-20 vehicles and this may well offset<br />

any payload advantages of the Gemini. 16<br />

On 5 December Secretary Zuckert forwarded Flax’s<br />

comments to McNamara and again expressed his opinion<br />

that the X-20 deserved to be given serious consideration<br />

for a role in the manned military space experiment.<br />

The same day Flax also dispatched to DDR&E the<br />

Air Force’s quick-reaction study and evaluation of the<br />

recommendations contained in Brown’s 14 and 30<br />

November memoranda. Among other things, the USAF

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