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COMPARISON OF TWO AUTOMATIC THROTTLE CONTROLLERS FOR THE F8U-2N AIRCRAFT
NAVAL AIR DEVELOPMENT CENTER JOHNSVILLE PA ENGINEERING DEVELOPMENT LAB
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A study was made of the F8U-2N aircraft which has adverse approach airspeed characteristics and thrust eccentricity which requires a change in elevator trim with a change in thrust to maintain the same angle of attack. Aircraft with the above-mentioned characteristics require precise throttle control to hold the proper airspeed during the landing phase. Manual throttle control by the pilot may be adequate for manual carrier landings and, for some aircraft, adequate for automatic landings ANSPN-10, but generally represents a component of the closed loop system that is unpredictable with respect to dynamic response, gain, and accuracy characteristics. An automatic throttle controller is used to relieve the pilot of the exacting task of throttle manipulation. For automatic landings, dispersion at touchdown can be kept at a minimum by predictable performance characteristics of an automatic throttle. To simplify separation of control authority, for this report, the throttle is used to reduce airspeed errors and the stick is used to maintain flight3 kt. The effect of the throttle systems on airspeed performance was determined. Author
APPROVED FOR PUBLIC RELEASE