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Old May 11th 09, 11:28 PM posted to rec.aviation.soaring
Darryl Ramm
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Posts: 2,403
Default Spin recovery vs tail design

On May 11, 3:19*pm, Andreas Maurer wrote:
On Mon, 11 May 2009 23:19:26 +0200, John Smith

wrote:
C of G ist critical for spin entry, but for recovering from a sustained
spin, mass distribution is far more important. (The rudder force must
overcome the angular momentum.)


Interesting noone has mentiond flap setting yet - setting the flaps to
negative is by far the best way to quicken up the spin recovery.

I guess pretty many pilots here have flown the ASW-20 - recovering it
with setting 4 (zhermal setting) with a medium to rearward CG ca take
up to 2 turns, but with flaps 1 (fully negative) recovery takes at
maximum 0.75 turns.

Bye
Andreas


Not surprising at all - it would surprise me if anybody really wants
to teach this. Lets see -

- A desire to teach a standardized recovery
- Don't distract people with grabbing for a handle while under stress
(or if not stress just physically being thrown around a little)
- Likelyhood of grabbing the wrong handle (esp. if transitioning from
another ship) and just moving it (i.e. opening full spoilers)
- With full negative flap what happens to increased likelihood of
entering another/reverse spin if the pilot recovers too "hard"?

Darryl