"WingFlaps" wrote in message
...
On Mar 13, 4:33 pm, "Peter Dohm" wrote:
"WingFlaps" wrote in message

...

On Mar 13, 11:14 am, "Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way
D0t C0m wrote:

Note: as others are beating to death - stall speed doesn't change with
bank.
Do you really mean that?
Cheers

Yes, he does; and yes, he is correct.

You have gone back to thinking in only two dimensions; and therefore
ignoring the effects of vertical acceleration.


Nope, the plane's vertical acceleration is 0 so all that matters is
that the lift must equal the weight. As the plane banks the lift
vector is no linger in line with the weight so the load factor is
increased by 1/cos(bank angle) and the stall speed is proportional to
the square root of the load factor. Or are we talking at crossed
purposes?

Cheers

Then we are clearly talking at crossed purposes, as all of us who are
separating stall speed from angle of bank are considering vertical
acceleration. The salient point is that, whether you are amking use of it
at any given moment, vertical acceleration downward is one of the tools that
is available. OTOH, from the airplane's point of view, acceleration upward
and deceleration downward are basically the same thing; so if you are trying
to stop a descent while banked, the load factor and stall speed can increase
dramatically.

All the best
Peter