An idea ! I guess you all have seen those videos of 688 making emergency surface. If I knew the speed, I have everything ! Pitch can be seen in the video. From the speed, and amount of exposed hull, time it take to submerge again I can compute side lift & drag coefficients, and even forward-backward stabilization forces.
So the questions is .. what is the speed estimate of the sub in this video ?
If it is realtime, I could even capture the speed from the video. But is it realtime ?
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