Building an electronic Angle of Attack indicator

"Dan D" wrote in message
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"Peter Dohm" wrote in message
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"Dan D" wrote in message
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"Peter Dohm" wrote in message
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"bildan" wrote in message
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The interest for me is a sailplane installation where AOA is a
performance issue in addition to a safety issue.

My glider can be flown at 1000 pounds up to 1433 pounds gross weight
and spends a lot of time in 2G turns thermalling. The AOA for minimum
sink is always the same but the airspeed at which that happens changes
a lot. The same thing with best L/D.

A very 'slippery' glider takes a while for the airspeed to settle down
after a pitch change. Flying to an exact AOA would be easier than
chasing airspeed.

An AOA indicator that shows minimum sink and maximum L/D as well as
stall would be quite useful.



The glider solution could be a simple as the piece of yarn along the
side of the canopy...


Someone's trimming of messages needs work!

My post, immediately above yours, included the following:
"By the way, a pair of "pitch strings" mounted on the lower portion of
the
canopy sides would possibly work as well and would be a trivial
installation; but I suspect that they could be difficult and distracting
to
read unless they happened to fit well with your use of peripheral vision.
That issue greatly exceeds my "human factors" knowledge."

That seems similar, except that I had suggested a string on each side.




Sorry, didn't see it...it does seem great minds think alike!


No problem, and I'm glad to have a second on a simple solution.