Friday, June 1, 2012

After Trip to ISS, SpaceX's Dragon Capsule Returns Safely To Earth

Details: [wikipedia.org]

On July 21, 1961, Grissom was pilot of the second Project Mercury flight, Mercury-Redstone 4, popularly known as Liberty Bell 7. This was a suborbital flight which lasted 15 minutes and 37 seconds. After splashdown, emergency explosive bolts unexpectedly fired and blew the hatch off, causing water to flood into the spacecraft. Quickly exiting through the open hatch and into the ocean, Grissom was nearly drowned as water began filling his spacesuit. A nearby helicopter tried to lift and recover the spacecraft, but the flooding spacecraft became too heavy, and it was ultimately cut loose before sinking.

Grissom asserted he had done nothing to cause the hatch to blow, and NASA officials eventually concluded that he was correct. Initiating the explosive egress system required hitting a metal trigger with the side of a closed fist, which unavoidably left a large, obvious bruise on the astronaut's hand,[citation needed] but Grissom was found not to have any of the tell-tale bruising. Still, controversy remained, and fellow Mercury astronaut Wally Schirra, at the end of his October 3, 1962 flight, remained inside his spacecraft until it was safely aboard the recovery ship, and made a point of deliberately blowing the hatch to get out, bruising his hand.[26]

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