Maneuver Analysis
The parameters derived from the best estimated trajectory for each spacecraft maneuver executed during the translunar, lunar orbit, and transearth coast phases are presented in table 7-11. Tables 7-III and 7-IV present the respective pericynthion and free-return conditions after each translunar maneuver. The free-return results indicate conditions at entry interface produced by each maneuver, assuming no additional orbit perturbations. Tables 7-V and 7-VT present the respective maneuver...
Lunar Module
The crew reported shortly after lunar landing that the mission timer had stopped. They could not restart the clock at that time, and the power to the timer was turned off to allow it to cool. Eleven hours later, the timer was restarted and functioned normally for the remainder of the mission. Based on the characteristic behavior of this timer and the similarity to previous timer failures, the most probable cause of failure is a cracked solder joint. A cracked solder joint is the result of...
Preparation For Powered Descent
The crew entered and began activation of the lunar module following the first sleep period in lunar orbit see section 4.8 . A listing of significant events for lunar module descent is presented in table 5-1. Undocking was accomplished on schedule just prior to acquisition of signal on lunar revolution 13- After the lunar module inspection by the Command Module Pilot, a separation maneuver was performed by the command and service modules, and 20 minutes later, the rendezvous radar and VHF...
Postlanding Spacecraft Operations
Immediately after landing, the lunar module crew began a simulated launch countdown in preparation for the possibility of a contingency lift-off. Two problems arose during this simulated countdown. First, the mission timer had stopped and could not be restarted therefore, the event timer was started using a mark from the ground. Second, the descent stage fuel-helium heat exchanger froze, apparently with fuel trapped between the heat exchanger and the valves, causing the pressure in the line to...
Lunar Contamination And Quarantine 1
The two fundamental responsibilities of the lunar sample program were to preserve the integrity of the returned lunar samples in the original or near-original state and to make practical provisions to protect the earth's ecology from possible contamination by lunar substances that might be Infectious, toxic, or otherwise harmful to man, animals, or plants . The Public Laws and Federal Regulations concerning contamination control for lunar sample return missions are described in reference 9-An...
Recovery Operations
The Department of Defense provided recovery support commensurate with the probability of landing within a specified area and with any special problems associated with such a landing. Recovery force deployment was nearly identical to that for Apollo 8 and 10. Support for tl e primary landing area in the Pacific Ocean was provided by the USS Hornet. Air support consisted of four SH-3D helicopters from the Hornet, three E-U3 aircraft, three Apollo range instrumentation aircraft, and two HC-130...