Today's popular sport aircraft fly faster, higher, further, and with larger payloads. As a result, the stall speed, the approach speed, and other performance speeds can no longer be assumed to be constant. They actually never were. AOA provides pilots with a full range angle of attack indication on a color display and warns of high angles of attack visually and with a verbal message "Angle Angle Push".
Optimum approach to landing speeds vary with weight, bank angle, CG and even relative humidity. With the AOA instrument, we can now do precision approaches just like Navy aircraft carrier and airline pilots eliminating the requirement to compute performance speeds. AOA indication tells you where the airspeed is going to be, unlike the airspeed indicator that tells you where it was. Your aircraft stalls at the same AOA regardless of weight, temperature, altitude, or center of gravity and bank angle. Your stall indicated airspeed varies significantly with all the above. For any given airfoil, other performance parameters such as best lift to drag, best glide, maximum endurance and maximum maneuvering performance also occur at known AOAs.
Nearly one-half of experimental and over one-fourth of certified aircraft fatalities are the result of stalls and spins. The killer-turn from base to final, distractions from �flying the aircraft� and lack of raw AOA information all contribute to these statistics. Gauging angle-of-attack is the pilot�s best tool for monitoring aerodynamic performance. Best glide, maximum range, approaches and stalls are all functions of AOA, not airspeed. Optimum approach to landing speeds vary with weight, bank angle, CG and even relative humidity. With our AOA instrument, you can fly precision approaches just like Navy and airline pilots, and eliminate the need to compute performance speeds. AOA indication tells where the airspeed is going to be, unlike the airspeed indicator that tells where it was.
