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Tue Feb 7, 2012, 01:33 PM

Roger Boisjoly dies at 73; engineer tried to halt Challenger launch [View all]

By Ralph Vartabedian, Los Angeles Times
February 7, 2012

The 1986 explosion that destroyed the space shuttle Challenger and killed seven astronauts shocked the nation, but for one rocket engineer the tragedy became a personal burden and created a lifelong quest to challenge the bureaucratic ethics that had caused the tragedy.

Roger Boisjoly was an engineer at solid rocket booster manufacturer Morton Thiokol and had begun warning as early as 1985 that the joints in the boosters could fail in cold weather, leading to a catastrophic failure of the casing. Then on the eve of the Jan. 28, 1986, launch, Boisjoly and four other space shuttle engineers argued late into the night against the launch.

In cold temperatures, o-rings in the joints might not seal, they said, and could allow flames to reach the rocket's metal casing. Their pleas and technical theories were rejected by senior managers at the company and NASA, who told them they had failed to prove their case and that the shuttle would be launched in freezing temperatures the next morning. It was among the great engineering miscalculations in history.

A little more than a minute after launch, flames shot out of the booster joint, melted through the nearby hydrogen fuel tank and ignited a fireball that was watched by the astronauts' families and much of the nation on television. Boisjoly could not watch the launch, so certain was he that the shuttle would blow up. In the months and years that followed, the disaster changed his career and permanently poisoned his view that NASA could be trusted to make the right decisions when matters came to life and death.

Read more:
http://www.latimes.com/news/obituaries/la-me-roger-boisjoly-20120207,0,2248999.story

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Reply Roger Boisjoly dies at 73; engineer tried to halt Challenger launch [View all]
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