Simulation Study of an Automatic Trim System for Reducing the Control Forces on a Light Twin After an Engine Failure 850913
An 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.
Citation: Stewart, E. and Brown, P., "Simulation Study of an Automatic Trim System for Reducing the Control Forces on a Light Twin After an Engine Failure," SAE Technical Paper 850913, 1985, https://doi.org/10.4271/850913. Download Citation
Author(s):
Eric C. Stewart, Philip W. Brown
Affiliated:
NASA Langley Research Center
Pages: 16
Event:
General Aviation Aircraft Meeting and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1985 Transactions-V94-85
Related Topics:
Research and development
Simulators
Pressure
Propellers and rotors
Documentation
Simulation and modeling
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