During his investigation, he discovered that the first of a system of two O-rings had failed completely, and that some damage had been caused to the second O-ring.
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Robison was a Rochester Institute of Technology professor; Hoeker and Young freshman RIT students.
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Roger Mark Boisjoly (April 25, 1938 – January 6, 2012) was an American mechanical engineer, fluid dynamicist, and an aerodynamicist who is best known for having raised objections to the launch of the Space Shuttle Challenger the day before the loss of the spacecraft and its crew.
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