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Allan McDonald, Who Refused to Approve Launch of Ill-Fated Challenger Space Shuttle, Dies at 83


Allan McDonald, Who Refused to Approve Launch of Ill-Fated Challenger Space Shuttle, Dies at 83
People
3/8/2021
© Provided by People
Sean Smith/NASA
Allan McDonald, an engineer who refused to approve rocket boosters that were used in the Challenger space shuttle, has died at 83 after falling and injuring his head, according to NPR.
It was in 1986 that McDonald, who worked at NASA contractor Morton Thiokol, refused to sign off on the launch of the Challenger space shuttle at the Kennedy Space Center in Florida on Jan. 28 of that year. His reasoning, according to a
Los Angeles Times, was because he believed the cold temperatures around launch day could affect the rocket booster s O-rings, which keep gases from escaping. ....

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Raytheon to challenge Lockheed's takeover of Aerojet, CEO says


Raytheon to challenge Lockheed’s takeover of Aerojet, CEO says
Raytheon Technologies chief executive Greg Hayes. (Raytheon)
“They [Aerojet Rocketdyne] are a huge supplier to us, and if that merger actually happens, you don’t have an independent supplier on the solid-rocket-motor side. And also, I think it gives us pause as we think about the competitive landscape going forward,” Hayes said at the Barclays Industrial Select virtual conference.
If the deal is completed, Raytheon and Boeing would see a top competitor absorb a key supplier of solid-fuel rocket motors used in Raytheon’s missile systems. Hayes said the company would make its concerns known to the U.S. departments of Defense and Justice. ....

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