Project: N18TA     -     Entry

Aug 15, 2010 10 Angle of Attack Indicator installation Category: Avionics
The Sport angle of attack system we installed ran from the left wing where utilizing two tiny holes, one on top and the other on the bottom of the wing, differential pressures would feed down to the floor, and up to the glare shield through red and blue vinyl tubes. These tubes attached to a small computer which uses the pressure differentials to then feed signals to a 9-LED indicator mounted on center of the glare shield. We mounted the indicator rather far forward so both the pilot and copilot could easily see the LED lights. We also mounted a switch micro switch next to the flap handle so when the flap handle is pulled up to the first 10-degrees of flaps, the AOA "brain" knows the coefficient of lift has changed because of the lowered flaps.


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