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A Study of Simplified Methods for Longitudinal Control Decoupling
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English
Abstract
Using an inflight simulator, a simple longitudinal decoupling concept was compared with conventional airplane characteristics for the approach and landing tasks. The decoupling system allowed the pilot to command flight path angle changes with the stick with little or no accompanying speed change; likewise, speed changes with only small accompanying flight path changes could be made with throttle only. The unique feature of the concept is that it is an open loop (that is, non-feedback) control system. Results indicate that in calm air and up to moderate levels of turbulence the decoupling system provides a substantial reduction in pilot workload. The program was supported by NASA, Langley Research Center, under Grant NSG 1234.
Authors
Citation
Joslin, R., Ohmiya, H., and Ellis, D., "A Study of Simplified Methods for Longitudinal Control Decoupling," SAE Technical Paper 770468, 1977, https://doi.org/10.4271/770468.Also In
References
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- Miller, G. K. Jr. Deal P. L. “Moving-Base Visual Simulation Study of Decoupled Controls During Approach and Landing of a STOL Transport Aircraft.” NASA TN D-7790 January 1975
- Seckel E. Feinreich B. “In-Flight Simulation Study of Decoupled Longitudinal Controls for the Approach and Landing of a STOL Aircraft.” NASA TM X-73 May 1976
- Ellis D. R. “General Aviation Landing Research at Princeton University.” Paper 730306 SAE National Business Aircraft Meeting Wichita April 1973
- Harper, R. P. Jr. Cooper G. E. “The Use of Pilot Rating in the Evaluation of Aircraft Handling Qualities.” April 1969
- Seckel E. “The Landing Flare: An Analysis and Flight-Test Investigation.” NASA CR-2517 1975