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Old 11-26-2017, 05:35 PM   #226
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Originally Posted by kuddel View Post
 While I've seen lots of Challenger Accident Videos that range from "very lurid" to quite exact, most of the O-Ring animations I saw don't described it that good as this one (I think);
Challenger O ring Final Cut - YouTube
Actually, the primary o-ring wasn't just sitting in the middle of the gap as it's shown, but had to move across the gap (from the top to the bottom, in the video) as the volume between the o-rings was pressurized during the leak checks, thus forcing the primary o-ring "in the wrong direction".

BTW: IMO, J-seal = brilliant design.
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