February 2013

Experimenter is a magazine created by EAA for people who build airplanes. We will report on amateur-built aircraft as well as ultralights and other light aircraft.

Issue link: https://experimenter.epubxp.com/i/108002

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Page 41 of 44

F li g h t Te s t in g Te c hn i q u e s every configuration there is only one stall AOA. Figure 3 applies whether flaps are up or down and at any weight. If your airplane has an AOA indicator, you would know how close you are to stalling under all flight conditions. A red mark on your indicator for the cruise configuration stall AOA and a different mark for the landing configuration AOA would keep you better informed than applying the same airspeed for all airplane weights and configurations. Another mark on the indicator for your airplane's proper landing approach AOA can be a lifesaving cross-check of your final approach airspeed. There's one more mark you might want to have on your AOA indicator. That's for the AOA 42 Vol.2 No.2 / February 2 013 that results in both your maximum range cruise speed and your maximum range engine-out glide speed. Now that's a useful number, and we'll explain why next month.

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