I've noticed a problem with stalls in YASim.  Try this:

1. Climb to a safe altitude.
2. Cut power to idle.
3. Keep raising the nose slowly to hold the current altitude until the
   stall occurs.

In a real Skyhawk, it's 50:50 whether the nose will even drop much if
I pull the yoke all the way back; often, I just get mild buffetting as
the nose drops a couple of degrees, picks up speed, and lifts up again
and the plane mushes on forward.  There's never any roll in a
power-off stall, though a power-on stall can sometimes cause a slight
incipient spin.

In my Warrior, my instructor and I were unable to get anything but
buffetting in any configuration: full flaps, no flaps, power, no
power, sharp pull-back, etc..  Even a departure stall (in a 30 degree
climbing bank with power) failed to cause the outside wing to drop.

On the other hand, with the simulated YASim planes I tested this
morning (Cub, Skyhawk, and Warrior), a straight-ahead stall *always*
causes a violent wing drop, often followed by inverted flight.  I
understand that that can happen on a cross-controlled approach stall
(rudder full one direction, ailerons full the other) even in trainers,
but I cannot test it in real life since no plane I fly is certified to
fly inverted.  It can also happen in the departure stall I mentioned
above, though I cannot coax my Warrior to do it.  Otherwise, though,
the trainers I've flown simply do not normally stall that way.

What can we do to prevent the over-eager wing drop in YASim?  Is there
something we can change in the config files, or is it a C++ code
problem?  I understand that many higher-performance aircraft can have
quite violent (and even unrecoverable) stalls, as can some trainers
like the Traumahawk, and I don't want to lose the ability to model
cross-controlled approach stalls, but we need to get the other stalls
right as well.  Skyhawks and Cherokees are very forgiving planes, or
else many fewer low-time pilots would live to become high-time pilots.


All the best,


David

-- 
David Megginson, [EMAIL PROTECTED], http://www.megginson.com/

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