BEagle,
You say that and AoA gauge is the simplest instrument to construct, if thats the case, why has it never been done before, why is it not fitted to any general aviation aircraft?
It is easy to make and fit on to a jet aircraft, but a single prop is a different matter. The propellor disturbs the air over the fuselage, and the flow over the wing is affected by angle of attack anyway. There is therefore no logical place to put a sensor.
I would be interested to know what you were told at Cranfield in 1971?
Ryan
PS What did you do at Cranfield?