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From: tarolli@dragon.SGI.COM (Gary Tarolli)
Newsgroups: comp.sys.sgi
Subject: Re: flight's concept of a 'good landing'
Summary: unpredictable stalls
Message-ID: <27176@sgi.SGI.COM>
Date: 21 Feb 89 20:43:15 GMT
References: <8902162128.AA04906@adt.uucp> <2651@eos.UUCP> <528@sdrc.UUCP> <8212@watcgl.waterloo.edu>
Sender: daemon@sgi.SGI.COM
Organization: Silicon Graphics, Inc., Mountain View, CA
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	True, most minor stalls are quite predictable and can be modelled
in simulation and practised in real life.  But violent stalls, like a plane
falling backwards, or in a flat-spin, I don't believe would be predictable.

	To model minor stalls you need to know the wing design - which part
of the wing will stall first and what the effect on the plane will be. Since
flight uses the same equationsmodel all its planes, this is beyond the
scope of its equations.  To properly model stalls and other effects would
probably require much more than the 50 floating point operations in flight,
and would probably slow things down quite a bit if you got carried away.

	The equations in flight are lousy.  I'm not an aero engineer, I'm
lucky I ended up with planes that could fly period. How about one of you
aero-specialists coming up with a better flight model and posting it?