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Airspeed Indication and Relative Wind
If I'm descending slowly with a relatively nose-high attitude - say, in
preparation for a short field landing - does the high angle of the pitot tube have any effect on indicated airspeed? (I suppose all designs are different - say this is a 172.) If the descent was steep, the relative wind would be coming from below and forward with respect to the wing, right? Add the pitch angle, and it seems like the pitot tube would be at a fairly angle with respect to the direction of air flow. I suppose this is a simple angle of attack question.... Seems like the air would be passing slightly "over" the pitot tube opening rather than "into" it, thus reducing the measure air pressure. Is this correct? Is indicated airspeed affected by high AOA? -Scott |
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