Space Rocket History #49 – Gemini Systems Design – 1962

Posted on February 6, 2014 by spac9750

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On January 3 1962, “Gemini” became the official designation of the Mercury Mark II program. The name had been suggested by Alex Nagy of NASA Headquarters because the twin stars Castor and Pollux in constellation Gemini (the Twins) seemed to him to symbolize the program’s two-man crew, its rendezvous mission, and its relation to Mercury. Coincidentally, the astronomical symbol (II) for Gemini, the third constellation of the zodiac, corresponded neatly to the Mark II designation…

OAMS and RCS

Nomenclature.

Partial Spacesuit

Agena B

Aug 29

Space Rocket History #27 – Mercury-Redstone 4 – Liberty Bell 7 with Gus Grissom

Posted on August 29, 2013 by spac9750

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Mercury-Redstone 4 was the fourth mission in the Mercury-Redstone series and the second U.S. manned suborbital spaceflight. The mission was essentially a repeat of Alan Shepard’s Freedom 7 flight. So why was it necessary to launch another sub-orbital mission? Why not proceed with an orbital flight to match the Soviet Vostok 1? Among other things the U.S. needed more space experience to corroborate the “Man-in-Space” concept. Also the Redstone was the only booster NASA had that was approved for manned launches. The Atlas booster was available but not ready. Atlas was capable of putting a Mercury Capsule into orbit, but it had been launched three times with unmanned capsules, and it had exploded on 2 of the 3 attempts.

MR-4 Launch

Gus Grissom

1137px-Grissom_prepares_to_enter_Liberty_Bell_7_61-MR4-76

Ready to Go

MR-4 Hatch

513px-Grissom_lifted_from_water_61-MR4-82

Rescue

Liberty Bell 7

Aug 15

Space Rocket History #25 – Mercury Redstone 3 – Freedom 7 with Alan Shepard

Posted on August 15, 2013 by spac9750

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Over 52 years ago, in the early hours of May 5th, 1961 the US prepared to launch its first man into space. Three weeks earlier, the Soviet Union had sent Yuri Gagarin on an orbital mission. This was a suborbital mission planed to last only 15 minutes. For the moment that did not matter, the entire nation held its breath while Alan Shepard became America’s first man in space.