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AoA keep it going!



 
 
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Old December 16th 07, 07:14 AM posted to rec.aviation.soaring
fred
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Posts: 44
Default AoA keep it going!

In my early hours of being instructed, not one went by without stall
and spin practice. They also taught me to look out of the window.
Maybe I've done a thousand or more turns before I found myself in a
spin that I did not intend to happen. I was in an HP11, over a ridge,
with a 1-26 out climbing me. "He can't do that!" With over 60 degrees
bank, I just tightened my turn by pulling back on the stick. I
increased my AoA without concern. Snap!
The ridge was spinning below my nose and getting larger very fast. My
old instincts kicked in. I was looking at the grass when I recovered.

Now, AoA is my favorite subject to teach. My God! The ignorance is
rampant. A tow pilot applied for a job. I asked him what the
approximate angle of attack was for the Super Cub wing when it
stalled. A commercial pilot raised his arm and pointed up about 40
degrees above the horizon. He went home. I was stunned.

A favorite question I use for instruction... Which wing in a turn has
the greatest angle of attack? The pilot has a 50-50 chance at the
correct guess. No matter what his answer, I ask why? I get no answer.

A problem I find is a lack of understanding of "relative wind" Is
there no hope?

I have witnessed a low altitude spin to impact. It was not nice.

Another spin to impact gave me the opportunity to ask the pilot the
question..."What makes the glider turn?
His answer:"The rudder" He was a military acadamy pilot.

We absolutly must teach and demonstrate more angle of attack
recognition and recovery. It doesant take long before you hear or
read about a stall spin fatality, Don't let your stundent go out into
the wold without being trained in ALL aspects of AoA and stall spin
recovery.Maybe the instructor should learn first.
God bless good instructors,Fearless Fred
 




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