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Roger Mark Boisjoly (/ ˌ b oʊ ʒ ə ˈ l eɪ / BOH-zhə-LAY; [2] April 25, 1938 – January 6, 2012) was an American mechanical engineer, fluid dynamicist, and an aerodynamicist.He is best known for having raised strenuous objections to the launch of the Space Shuttle Challenger months before the loss of the spacecraft and its crew in January 1986.
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).
In the years immediately after the Challenger disaster, several books were published describing the factors and causes of the accident and the subsequent investigation and changes. In 1987, Malcolm McConnell, a journalist and a witness of the disaster, published Challenger–A Major Malfunction: A True Story of Politics, Greed, and the Wrong ...
STS-51-B was the 17th flight of the NASA Space Shuttle program and the seventh flight of Space Shuttle Challenger. The launch of Challenger on April 29, 1985, was delayed by 2 minutes and 18 seconds, due to a launch processing failure. Challenger was initially rolled out to the pad to launch on the STS-51-E mission.
According to McDonald, NASA engineers pressured Thiokol into agreeing to the launch over the concerns expressed by Thiokol engineers, and later tried to cover that up. [12] Testifying before the Presidential Commission on the Space Shuttle Challenger Accident, also known as the Rogers Commission, McDonald's account revealed the coverup. [12]
The controversy over Lockerbie began within days of the tragedy on 21 December 1988. As the drama recounts, it soon emerged that there had been warnings that a bomb attack on a Pan Am flight was ...
Gregory Bruce Jarvis (August 24, 1944 – January 28, 1986) was an American engineer and astronaut who died during the January 28, 1986 destruction of the Space Shuttle Challenger on mission STS-51-L, where he was serving as payload specialist for Hughes Aircraft.
A Dodge Challenger in Nampa, Idaho went flying into the air after apparently striking a berm at a high rate of speed, destroying one home's chimney before landing on a second home's roof.