Simulation evaluation of the effects of time delay and motion on rotorcraft handling qualitiesA study aimed at determining the effects of simulator characteristics on perceived handling qualities is discussed. Evaluations were conducted with a baseline set of rotorcraft dynamics, using a simple transfer-function model of an uncoupled helicopter, under different conditions of visual and overall time delays. As the visual and motion parameters were changed, differences in pilot opinion were found reflecting a change in the pilots' perceptions of handling qualities, rather than changes in the aircraft model itself. It is concluded that it is necessary to tailor the motion washout dynamics to suit the task, with reduced washouts for precision maneuvering as compared to aggressive maneuvering. Visual-delay data suggest that it may be better to allow some time delay in the visual path to minimize the mismatch between visual and motion, rather than eliminate the visual delay entirely through lead compensation.
Document ID
19910065202
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mitchell, David G. (Systems Technology, Inc. Hawthorne, CA, United States)
Hoh, Roger H. (Hoh Aeronautics, Inc. Lomita, CA, United States)
Atencio, Adolph, Jr. (Systems Technology, Inc. Hawthorne, CA, United States)
Key, David L. (NASA Ames Research Center; U.S. Army, Aeroflightdynamics Directorate, Moffett Field CA, United States)