
Memories >>>During a televised hearing, Feynman demonstrated that the material used in the shuttle’s O-ringsbecame less resilient in cold weather by compressing a sample of the material in a clamp and immersing it in ice-cold water.
Virgin ‘ignored’ space safety warnings before crash: expert
Los Angeles (AFP) – A rocket science safety expert on Sunday said Virgin Galactic “ignored” safety warnings in the years leading up to the deadly crash of its spacecraft in California, as investigators hunted for clues to accident’s cause.
Carolynne Campbell, a rocket propulsion expert with the Netherlands-based International Association for the Advancement of Space Safety, said she could not speculate on the cause of Friday’s crash without “all the data.”
However, she said multiple warnings had been issued to Virgin since 2007, when three engineers died testing a rocket on the ground.
“Based on the work we’ve done, including me writing a paper on the handling of nitrous oxide, we were concerned about what was going on at Virgin Galactic,” she told AFP.
“I sent copies of the paper to various people at Virgin Galactic in 2009, and they were ignored,” she said.
https://news.yahoo.com/probe-virgin-spaceship-crash-may-085338983.html;_ylt=AwrBJR8tdlZUJ0YAc5XQtDMD