With great interest I read the various posts on stall, spin and (viewed the FAA video on which had clear definitions on upset and stall) upset recovery.
Now how can we use that knowledge to improve matching of available information?
When you take the last known part of the flightpath, it ends with a left-turning 360 spiral small diameter 'circle'. If you try to match that spiral with the baseline scenario in post #2480 and the debris field, then what would we see.
First, it appears that with 2-3 at minimum, of those small diameter 'circles', placed one after another with a little overlap, you get to the point of impact. To get on a final trajectory matching the debris field you need to complete full circles. This because the tangent of the trajectory needs to point in the direction of the debris field.
Second, the last know altitude is about 24,000 ft and the rate of descent is about 7,900 fpm. So roughly, 3 minutes to get down to the point of impact.
If we take 3 turns, then we get exactly 1 turn per minute as the fastest 'speed along the spiral track'. Based on the diameter of the 'circle', the 1 minute, and the descent rate of 7,900. We would then get a first estimate of the speed along the spiralling/corkscrew track.
Before trying to calculate that, I hope there are posters who can give their feedback on this respresentation. Feedback primairily on the pre-impact scenario.
How do you fly one such circle and at the same time descent 7,900 ft.
Last edited by A0283; 24th Jan 2015 at 16:14.
Reason: Add example