>> As my areobatics instructor stresses, pull the stick back to
>> position 'X' at any speed and the wings will stall, so you may
>> be better monitoring the back pressure on the "stick" to detect
>> when a stall is imminent.

> I think that there may be two separate discussions in progress here.
> When you mention stalling, Tony, you are speaking specifically of a
> wing stall, rather than not having lift at all.  They are two
> different things.

Lift has several components:

1) pressure differential lift (classic wing lift),
2) flat plate lift, and
3) vertical component of propulsive force.

> What I'm trying to say is that a wing can stall and the aircraft
> can continue on un-stalled

As long as the total of all lift vectors exceeds the weight, the
aircraft will not descend -- even if the wing is technically (in
the clasic sense) stalled.


> (though if the aircraft is stalled, I think you're almost
> guaranteed to have all wings stalled).

Not true.  You can easily have one surface, the wing, stalled while
another surface, the stabilizer/elevator, is not stalled.  You can
also have part of a single surface, the wing, stalled while another
part of the same surface is not stalled -- tuned by installation of
"stall strips" on the leading edge.  If all surfaces stalled at the
same time, the aircraft would be uncontrollable.

                                                Lee Jones

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