Re: Destruction due to turbulence when below Va - how?

[Roger Long]

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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