1. Any angle of attack is better than none.
2. Mine is from:
http://www.advanced-flight-systems.com/ ... A/aoa.htmlThis was designed by a Navy pilot who landed on 'boats'.. He eventually sold it and they now offer several models. The 'pro' version was the only selection when purchased during construction of the Lancair.
The Pro also has gear warnings and includes audio outputs that were required for the Lancair (in my opinion).
Watching the AOA disappear during the steep pull-up after a low pass (to check runway conditions) throughout the left turn while indicating nearly 200MPH is a real eye opener. The PUSH ANGLE PUSH screaming in your ear encourages you to lower the nose and another stall spin fatality is avoided.
Slowing down to landing speeds is difficult in a slick airframe and it causes long lasting floats or bouncing plus seeing the runway end much too soon. Using AOA to slow as much as possible regardless of aircraft weight helps.
The dreaded stall spin during base to final during a distraction requires the audio reminder since the eyes are supposed to be 'out' of the cockpit.
The AOA should be installed on every airframe. I plan to put a 'vane' type on the C-150. The electronic 'homebuilt' version tried has not worked yet.
Try one! You will depend on it! I do.
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