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Old September 12th 12, 09:01 PM posted to rec.aviation.soaring
Don Johnstone[_4_]
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Posts: 398
Default Another stall spin

At 15:54 12 September 2012, Evan Ludeman wrote:
On Sep 12, 5:06=A0am, BruceGreeff wrote:

As a thought - consider what might have happened with Bruno if he had
immediately centralised the controls without changing flap first.


Motivated by this thread, I tested all this on my last flight.

What happens in my ASW20B -- if I provoke a scenario identical to
what's seen in Bruno's video, then apply normal spin recovery while
staying in #4 flap -- is that the "snap roll" stops a little past 90
degrees, the nose drops about 20 and I am able to re-establish a
thermal turn without ever exceeding 65 kts. It isn't exactly the
stuff of horror films.

A fully developed steady state spin does reasonably call for shifting
flaps to #2 (-4 deg) to avoid over stressing things on recovery. But
recovery from an incipient spin can be made (and imo should be made)
with normal spin recovery inputs.

-Evan Ludeman / T8


From the ASW 20 flight manual:

1. Recovery from spin can be easier achieved, if the
flaps are set in negative position (handle
forward).