Thread: FES climb rate question.
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  #23  
Old October 17th 20, 09:21 PM posted to rec.aviation.soaring
Mike Reid
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Posts: 16
Default FES climb rate question.
Your math seems correct, but the speed of sound varies with temperature, and not pressure, so if your density altitude is 8800' because it is 90ยบ F, then the speed of sound is 1252 fps and the tips are subsonic.

Mike