Simulation study of an automatic trim system for reducing the control forces on a light twin after an engine failureAn automatic trim system for reducing the control forces after an engine failure on a light twin has been investigated on the Langley General Aviation Simulator. The system schedules open-loop trim tab deflections as a function of differential propeller slipstream dynamic pressure and freestream dynamic pressure. The system is described and the airplane-system static and dynamic characteristics are documented. Three NASA research pilots evaluated the effectiveness of the system for takeoff and landing maneuvers. A variety of off-nominal system characteristics were studied. The system was judged to be generally beneficial, providing a 2 to 3 point improvement in pilot rating for the tasks used in the evaluations.
Document ID
19850067973
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Stewart, E. C. (NASA Langley Research Center Hampton, VA, United States)
Brown, P. W. (NASA Langley Research Center Hampton, VA, United States)