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Effects of stick dynamics on helicopter flying qualitiesAn experiment that investigated the influence of typical helicopter force-feel system dynamics on roll-axis handling qualities was conducted in concurrent ground and inflight simulations. Variations in lateral control natural frequency and damping ratio, effected by changes in inertia and damping, were evaluated in a disturbance-rejection task. Pilot ratings indicated a preference for low-inertia feel systems, although measured performance was relatively constant over the range of stick characteristics. Force-sensing was compared with position sensing as the input to the control system. Force-sensing improved performance but did not improve pilot ratings. Overall, the results indicated that control-stick dynamics, at least within a reasonable range, did not have a significant effect on pilot-vehicle performance. However, the physical effort required to maintain a desired pilot/manipulator bandwidth became objectionable as the stick inertia increased beyond 5-7 lbm, which was reflected in the pilot ratings and comments.
Document ID
19900060672
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Watson, Douglas C.
(NASA Ames Research Center Moffett Field, CA, United States)
Schroeder, Jeffery A.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Aircraft Stability And Control
Report/Patent Number
AIAA PAPER 90-3477
Meeting Information
Meeting: AIAA Guidance, Navigation and Control Conference
Location: Portland, OR
Country: United States
Start Date: August 20, 1990
End Date: August 22, 1990
Accession Number
90A47727
Distribution Limits
Public
Copyright
Other

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