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Destruction due to turbulence when below Va - how?



 
 
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Old July 21st 04, 03:27 PM
Roger Long
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Default Destruction due to turbulence when below Va - how?

It's not complete protection, it just loads the odds a bit more in your
favor.

The aircraft is as likely to be broken by a panicked response by the pilot
or a botched attempt to recover from an unusual attitude and being at Va
will reduce that probability significantly.
--

Roger Long



"Peter" wrote in message
...

I think I understand the reasoning behind Va, the max maneuvering
speed, being that the wing will stall (and thus dispose of the
loading) before it breaks. This is why Va falls as the weight falls,
because at any given IAS a higher weight takes the aircraft closer to
stall already.

So, how is it possible to have aircraft destruction due to weather,
e.g. flying into a strong updraught in a CB, if flying below Va?

A DOWNdraught would do it more easily because most aircraft designs
have a lower design limit for negative G.


Peter.
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