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He then decided to poll the engineers themselves, asking them to write down an anonymous estimate of the odds of shuttle explosion. Feynman found that the bulk of the engineers' estimates fell between 1 in 50 and 1 in 200 (at the time of retirement, the Shuttle suffered two catastrophic failures across 135 flights, for a failure rate of 1 in 67.5).
The second stage engines then cut off and separated at about 9 minutes and 8 seconds, allowing the first ignition of the S-IVB engine a few seconds later. [8] Apollo 11 entered a near-circular Earth orbit at an altitude of 100.4
The rolls began at 50 seconds into the engine burn. The burn was stopped 11 seconds early after burning a total of 76 seconds. After engine cutoff, the craft continued rolling while coasting to apogee. The roll was finally brought under control after apogee using the craft's reaction jets. SpaceShipOne landed safely and Mike Melvill was uninjured.
The explosion of Space Shuttle Challenger, taken from the TV-3 camera. At T+72.284, the right SRB pulled away from the aft strut that attached it to the ET, causing lateral acceleration that was felt by the crew. At the same time, pressure in the LH2 tank began dropping. Pilot Mike Smith said "Uh-oh," which was the last crew comment recorded.
In 1969, that's exactly what speechwriter William Safire imagined when waiting for the Apollo 11 to land on the moon. Safire penned a memo for President Nixon's Chief of Staff, H. R. Haldeman, in ...
The Apollo 11 crew bent some of the rods intended to hold the flag out straight, which added some ripples. The Apollo 12 astronauts had the same issue. ... so the Lunar Descent Engine didn't have ...
In August 2014, it was revealed that parts of two different F-1 engines were recovered, one from Apollo 11 and one from another Apollo flight, while a photograph of a cleaned-up engine was released. Bezos plans to put the engines on display at various places, including the National Air and Space Museum in Washington, D.C. [29]
Apollo 13 had drawn heavily on its entry batteries in the first hours after the explosion, and while this new battery could not power the CM for more than 5–10 hours it would buy time in the event of a temporary loss of all three fuel cells. Such an event had occurred when Apollo 12 was struck twice by lightning during launch.