An investigation of side-stick-controller/stability and control-augmentation system requirements for helicopter terrain flight under reduced visibility conditionsSimulation of the reduced visibility tasks is effected by providing the pilot with a visually coupled, helmet-mounted display of flight-control symbols superimposed upon terrain-board imagery. Forward-flight, low-speed, and precision-hover control modes are implemented, and a method is developed for the blending of control laws between each control mode. An investigation is made of the variations in the level of integration of primary control functions on a single side-stick controller. For most of the flight tasks investigated, separated controller configurations are preferred to a single, fully integrated side-stick device. Satisfactory handling qualities over all controller configurations are attained only for a precision-hover task conducted with a high level of stability and control augmentation. For most tasks flown with the helmet-mounted display significant degradation in handling qualities occurs relative to the identical tasks flown under visual flight conditions.
Document ID
19840035178
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Landis, K. H. (Boeing Vertol Co. Philadelphia, PA, United States)
Glusman, S. I. (Boeing Vertol Co. Philadelphia, PA, United States)
Aiken, E. W. (Boeing Vertol Co. Philadelphia, PA, United States)
Hilbert, K. B. (U.S. Army, Aeromechanics Laboratory, Moffett Field CA, United States)