PPRuNe Forums - View Single Post - 4th Aug 2018 Junkers JU52 crashed in Switzerland
Old 7th Aug 2018, 01:39
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Skyborne Flyer
 
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Originally Posted by Machinbird
In earlier posts, I mentioned the downward curvature of the vapor trail in the screen grab. This indicates steepening of the flight path, which if while maintaining a constant attitude, results in an increasing angle of attack. This was a 'gotcha' that D.P.Davies warned of in his book,"Handling the Big Jets." It would seem that the warning also applies to piston aircraft operating near their ceiling.

I too wondered whether the screen grab was significant since it was described as a picture of the aircraft shortly before the crash. When I saw the degree of angle of attack on the aircraft, it was clear that the aircraft was in extremis if the vapor trail was what it appeared to be. Following the vapor trail back, it became semi-transparent as a real vapor trail would. The fact that someone had already circled it meant that it was likely significant. Finally, did you ever ask why we only have a screen grab instead of the original video? I think it likely that the video would have been very distressing to those who saw it, but you can bet the accident board has seen it.
I believe the video was said to be of a previous flight, a previous poster stated that the view is from a different region, that the accident flight did not traverse, and therefore has no bearing to the chain of events leading to the crash.
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