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Old 2nd January 2006 | 20:34
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leonard17F
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Joined: Oct 2004
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From: Where the test flights are
Re: stall warner at high speed during aeros?

If VSn is the stall speed at the load factor n,
If VS1 is the stall speed at the load factor 1 (in straight and level flight),

Then VSn=SQRT(n) x VS1

(BTW, in a turn, n=1/cos (bank angle Phi)...)

For example, if n= 2, i.e. at 60° bank angle, then VS2= 1.41VS1

It also works if n=0, in zero-gravity, then you canNOT stall. Sweet !

It also works if PHI=90°, n=infinite, therefore you cannot sustain a turn and you will fall out of the sky, whatever your speed...

So, if n<1, your VSn will be smaller than VS1, and your stall speed indicator won't horn, even if IAS is lower then the stall speed given in the book.

Genghis, am I right ?
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