A total energy sensor for glidepath and speed control of a tactical airlifter in wind shear
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Date
1987
Authors
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Journal ISSN
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Publisher
Texas A&M University
Abstract
The effectiveness of a total energy sensor in a closed-loop environment during wind shear is presented. Models of the Lockheed High-Technology Test Bed, Nicks' total energy sensor and wind shear are developed and combined to provide the computer simulation used for this evaluation. The aircraft was flown using short take-off and landing techniques down a 6' glidepath through wind shear layers of various size and strength. Better control of glidepath and airspeed was available when total energy rate was used through a feedback controller in the elevator and spoiler channels. With the TE rate controller engaged, the control deflections occured earlier and were smoother than with the basic controller. However, the effectiveness of total energy rate feedback was limited by angle of attack bounds imposed by the aircraft data base. Nevertheless, total energy rate feedback was effective in reducing glidepath, airspeed and angle of attack deviations.
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Bibliography: leaves 94-95.
Bibliography: leaves 94-95.
Keywords
aerospace engineering., Major aerospace engineering.