Space Shuttle Challenger disaster - Wikipedia
On January 28, 1986, the Space Shuttle Challenger broke apart 73 seconds into its flight, killing all seven crew members aboard. The spacecraft disintegrated 46,000 feet (14 km) above the Atlantic Ocean, off the coast of Cape Canaveral, Florida, at 11:39 a.m. EST (16:39 UTC).
Allan McDonald, Who Refused To Approve Shuttle Challenger ...
2021年3月7日 · Allan McDonald, who directed the booster rocket project at NASA contractor Morton Thiokol, urged delaying the launch of the space shuttle before it exploded in 1986. He has died at age 83.
30 Years After Explosion, Challenger Engineer Still Blames ...
2016年1月28日 · When Challenger exploded 73 seconds after liftoff, Ebeling and his colleagues sat stunned in a conference room at Thiokol's headquarters outside Brigham City, Utah. They watched the...
Allan J. McDonald - Wikipedia
Allan James McDonald (July 9, 1937 – March 6, 2021) was an American engineer, aerospace consultant, author [1] and the director of the Space Shuttle Solid Rocket Motor Project for Morton-Thiokol, a NASA subcontractor.
Utah engineers' warning was ignored before Challenger ...
2016年1月29日 · Morton Thiokol engineers Allan McDonald and Roger Boisjoly tried to warn NASA that the equipment could fail, but the space agency did not cancel the launch and seven astronauts died on Jan. 28,...
Space Shuttle Challenger - Wikipedia
In September 1988 a federal judge dismissed two lawsuits seeking $3 billion from Space Shuttle rocket-maker Morton Thiokol Inc. by Roger Boisjoly, a former company engineer who warned against the ill-fated 1986 Challenger launch.
Utah Morton Thiokol Engineer Who Warned Of 1986 Challenger ...
2016年1月28日 · An engineer at Morton Thiokol, the rocket propulsion firm that supplied the space shuttle’s two solid rocket boosters, Eberling repeatedly warned NASA that the launch conditions that day could...