Flight Evaluations of the Effect of Advanced Control Systems and Displays on the Handling Qualities of a General Aviation Airplane

Loschke, Paul C.; Barber, M. R.; Jarvis, C. R.; Enevoldson, E. K.

doi:10.4271/720316

Cited by 5 publications

(1 citation statement)

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“…Command augmentation systems had been designed and flight tested in a PA-30 aircraft at the NASA Flight Research Center. 5 Those systems were used as a starting point and modified primarily by increasing rate feedback gains for this study. The resulting systems are shown in Fig.…”

Section: Control Systems Descriptionmentioning

confidence: 99%

Study of Control System Effectiveness in Alleviating Vortex Wake Upsets

Johnson

Rediess

1974

Journal of Aircraft

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The problem of an airplane being upset by encountering the vortex wake of a large transport on takeoff or landing is currently receiving considerable attention. This paper describes the technique and results of a study to assess the effectiveness of automatic control systems in alleviating vortex wake upsets. A six-degree-of-freedom nonlinear digital simulation was used for this purpose. The analysis included establishing the disturbance input due to penetrating a vortex wake from an arbitrary position and angle. Simulations were computed for both a general aviation airplane and a commercial jet transport. Dynamic responses were obtained for the penetrating aircraft with no augmentation, and with various command augmentation systems. The results of this preliminary study indicate that it is feasible to use an automatic control system to alleviate vortex encounter upsets.

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Section: Control Systems Descriptionmentioning

confidence: 99%