Gemini 12
Encyclopedia : G : GE : GEM : Gemini 12
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| Mission name: | Gemini 12 | |||||||||||||||||||||||||||||||||
| Call sign: | Gemini 12 | |||||||||||||||||||||||||||||||||
| Number of crew: | 2 | |||||||||||||||||||||||||||||||||
| Launch: | November 11, 1966 20:46:33.419 UTC Cape Canaveral LC 19 | |||||||||||||||||||||||||||||||||
| Landing: | November 15, 1966 19:21:04 UTC |- |Duration:||3 days, 22 hours 34 minutes 31 seconds |- |Distance Traveled:||~2,574,950 km |- |Orbits:||59 |- |Apogee: (1st orbit)||270.6 km |- |Perigee: (1st orbit)||160.8 km |- |Period: (1st orbit)||88.87 min |- |Inclination:||28.87 deg |- |Mass:||3,762.1 kg |- !colspan="2" cellspacing="0" cellpadding="2" bgcolor="#FFDEAD"|Crew picture |- |colspan="2" align="center"|  Gemini 12 crew portrait (L-R: Aldrin, Lovell) |- !colspan="2" cellspacing="0" cellpadding="2" bgcolor="#FFDEAD"|Gemini 12 Crew |} Gemini 12 (officially Gemini XII) was a 1966 manned spaceflight in NASA's Gemini program. It was the 10th manned Gemini flight, the 18th manned American flight and the 26th spaceflight of all time (includes X-15 flights over 100 km).
Contents
Crew
Backup crew
Mission parameters
Docking
Space walk
See alsoObjectivesBy the time of the last Gemini flight, the program still had not demonstrated that an astronaut could work easily and efficiently outside the spacecraft. In preparation for Gemini XII, new, improved restraints were added to the outside of the capsule, and a new technique—underwater training—was introduced, which would become a staple of all future space-walk simulation. Aldrin's two-hour, 20-minute tethered space-walk, during which he photographed star fields, retrieved a micrometeorite collector and did other chores, at last demonstrated the feasibility of extravehicular activity. Two more stand-up EVAs also went smoothly, as did the bynow routine rendezvous and docking with an Agena which was done "manually" using the onboard computer and charts when a rendezvous radar failed. The climb to a higher orbit, however, was canceled because of a problem with the Agena booster.
Gemini 12 was designed to perform rendezvous and docking with the Agena target vehicle, to conduct three ExtraVehicular Activity (EVA) operations, to conduct a tethered stationkeeping exercise, to perform docked maneuvers using the Agena propulsion system to change orbit, and demonstrate an automatic reentry.
ExperimentsThe 14 scientific experiments were (1) frog egg growth under zero-g, (2) synoptic terrain photography, (3) synoptic weather photography, (4) nuclear emulsions, (5) airglow horizon photography, (6) UV astronomical photography, and (7) dim sky photography. Two micrometeorite collection experiments, as well as three space phenomena photography experiments, were not fully completed.ReentryThe capsule was controlled on reentry by computer and splashed down 4.8 kilometers from its target.The Gemini 12 mission was supported by the following U.S. Department of Defense resources; 9,775 personnel, 65 aircraft and 12 ships. InsigniaThe patch's unique orange and black colors are a link to the flight's original scheduled date close to Halloween. The Roman numeral XII is located at the 12 o'clock position on the face of a clock, with the Gemini spacecraft pointing to it like the hour hand of a clock. This represents the position of Gemini 12 as the last flight of the Gemini program. With the Apollo project following this last flight of the Gemini program, the ultimate objective -- the moon -- is symbolized by the crescent on the left.TriviaA blunter symbol of the end of the Gemini program took place on the day of liftoff, as both astronauts wore signs on their backs. Lovell's read "THE," Aldrin's read "END."Capsule locationThe capsule is on display at the Adler Planetarium, Chicago, Illinois.External links
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