Apollo Saturn User Manual download pdf (Page 9)

Lunar Hodu]e Desccr_t. Approxlmntely fourteen hours later, two members

of tilethree man crcw, (A[_istrongand A]drin), wJ]1 enter the I_ through the

connecting tunnel, Upon compietion of a LH checkout, they will undock the LM

" and begin maneuvers:which wil] take them to the moon's .surface. Landing, via

the Junar module descent propulsion system, will occur approxlmately 2-I/2

hours later. (The LM can ],over like a helicopter for approximately 60 seconds

to select the _moothest landing spot.) W_,i]e separated, the astronauts will use

Lhe radio for communication using Code names "Snowcone" for the Command Module

and "flays___tp/k" for the Lunar ModuJe. Present plannlng calls for lurer touchdown to

occur at 3:21 p.m. CDT on July 20, 1969. The third crewman (Collins) wl)]. continue

to orbit the moon in the CH.

Lunar _:urfaceActivities. Following touchdown, Armstrong and Aldrln

are to rest fo_ -ppreximat_y eight hours, Lhen don their portable llfe support

backpacks and ma]'e other necessary preparation to walk the moon's surface. At

1:09 a.m. CDT on July 21, 1969, Armstrong is to climb down a nine-step ladder and

, become the firs_ man to plant his footsteps on the moon's surface. This activity

: is to be relayed llve to television viewers on earth with Aldrln handling the TV

camera_ Armstrong will stroll alone for about half an hour, gathezlng a quick

: sample of lunar sell so that they won't come home empty-handed if they should have

' to make an early takeoff Then Aldrln is to Join Armstrong on the surface for

' approximately 2 hours during which they are to gather about 80 pounds of lunar

rocks and soil and to set us a scientific experiments package which will transmit

lunar data after the astronauts leave,

Lunar Module Ascent. After returning to the LM, the astronauts are

to rest for nearly six hours. They will have been on the moon for approxlnmtely

21 hours and 30 minutes. The LM ascent stage is used to llftoff from the moon's

surface and to fly a 3-hour and 30 mlnute rendezvous course to catch-up and llnk-

up with the CM. Orbital plane changes, trim burns, or maneuvers required to

achieve CSM/LM rendezvous are made with the LM reaction control system. As soon

as CSM/LM docking has been accomplished, the two crew members, the lunar sell

samples and the exposed film are transferred to the CSH and the LM is secured.

Service module RCS is used to separate the CSM from the LH,

Transearth injection and Coas E. The SH propulsion system is used to

boost the CSM out of lunar orbit. During transearth coast (approxlmately 64

hours) midcourse corrections are made if required.

Reentry, Splashdown. and Recover. The Command Module is separated from

the Service Module prior to atmospheric reentry. The nominal range from re-

entry (400,000 feet) to splashdown is approximately 2000 miles. Splashdown will

take place in the Pacific Ocean approximately 12:00 p.m, CDT July 24, 1969. -"

Immediate recovery of the crew after splashdown has been arranged.

Quarantine Period. Upon recovery, the astronauts will be transferred to

a special sealed van on the deck of the carrier for the sea-alr-truck trip to the

Manned Spacecraft Cen_er in Houston, Texas. There they are to be quarantined

with the lunar soil samples In a lunar receiving laboratory for 18 days. Doctors

wlnt to be certain they do no_ bring back any lunar germs.

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Apollo Saturn User Manual Page 9

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