On 4/15/2024 12:40 PM, Oscar Zuniga via KRnet wrote:
I for one would be very interested to learn how the FAA requires a
certified aircraft's Vne be determined and also how aircraft designers
work out that number and then flight test to it.
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Research would indicate the designer sets a speed , Vd, (velocity dive),
the aircraft is tested to that speed to insure no vibration or flutter,
and then Vne is set at 10% below that number as a safety margin. Lots
of variables there in testing like was the air calm or turbulent,
aircraft weight, were the controls "bumped" to test for flutter, etc.
We would probably be amazed how many times we fly on the edge of
disaster without knowing it.
Larry Flesner
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