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Date: Wed, 24 Aug 2005 21:45:26 -0400
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From: Guy Buchanan <bnn@nethere.com>
Subject: TS Speed versus Spin
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         I remember a long thread a while ago on Lancair stall/spin 
behavior. My recollection was that it was inadvisable to intentionally spin 
a Lancair, and stall practice was risky and to be treated to the greatest 
respect. Up comes the discussion on TS and the obvious recommendation is to 
slow to below maneuvering speed. This keeps the wings on, but raises the 
risk of uncontrolled spinning. I wonder how a spinning aircraft handles TS 
loads? Perhaps that's why the FAA is so adamant that certified aircraft be 
either spin "resistant" or spin "recoverable".

Guy Buchanan

References:

"I don't remember anyone
   addressing the benefits of going to maneuvering speed as soon as you
   encounter sever turbulence to try and mitigate the results. "

"What this means to me is that pushing the envelope is a riskier 
proposition in a Lancair than it is in, for
example, a citabria, edge or other airplane ... For this reason, while I 
would gladly go out any time and do a stall series in a 172,
my experience in my Legacy consists of an approach to stall, done with Don 
Goetz on board as a part of initial flight testing.  Even with ACM 
experience under my belt, I not only don't stall my Legacy, I don't come 
close at any time at which I am not within ten feet of a runway.  It's not 
because the a/c is too high performance for me; it's because I don't know 
for sure what it will do and neither does anyone else."


Guy