LUNAR EXPEDITION PLAN

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k.2 SUBSYSTEM BEVELOFMEHT
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The development of a manned lunar payload and a cargo
package requires the development of subsystems and applied
research in many technical areas. Studies have established
that the advances In performance In these technical areas can
be accomplished to meet the overall program schedules and that
no scientific breakthroughs are required. She Important point
is that items requiring development be identified, that necessary
funds be allocated, and that effort be Initiated without delay.
Die following sections discuss major subsystem requirements,
present capabilities, and development required. Completed
studies conducted by the Air Force and Industry have established
subsystem requirements in sufficient detail to outline development
programs which should be initiated Immediately. Present
studies will refine these specifications further.
The manned re-entry vehicle is a critical item in the
development of the manned payload packages. This vehicle must be
- capable of returning from the moon and re-entering the earth's
(_ atmosphere at earth escape velocity (37*000 ft/Bee.). It must
also have the capability of supporting three men on a 10-day
round trip earth-moon mission. This mission would include boost
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from earth, coasting in earth orbit, ballistic flight to the moon,
deboost and landing on the moon's surface, remaining on the moon
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