Andrew Sarangan a crit :
>
>
> I read the Vne definition from wikipedia (which you posted) and your
> observations that Vne is always given in IAS, and am having a difficult
> time reconciling the two.
Andrew and all,
As you say things are not that straightforward.
Airplanes are designed for a specific Vd (Velocity dive) which is
expected to be well below flutter velocity.
Test pilots must *demonstrate* Vdf where flutter is absent (Vdf < or = Vd).
After that, Vne is *calculated* to be Vne < or = 0.9 Vdf < or = Vd.
This takes into account any ASI inaccuracy with a reasonable safety margin.
Only test pilots are allowed to intentionnally exceed Vne up to Vd.
So provided the airplane is correctly rigged and control-balanced, there
is no problem flying up to Vne in calm air.
Be aware though, that there is also a Vno and a Va (maneuvering speed)
to comply with. At Va you are only allowed to actuate *one* control to
full deflection at a time.
FWIW,
Best regards,
--
Gilles
http://contrails.free.fr
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