Flight Test of Explicit and Implicit Rotor-State Feedback Fly-By-Wire Control Laws
Christina Ivler, M. Hossein Mansur, Zachariah Morford, US Army; Kevin Kalinowski, Dell Services Federal Government; Marit Knapp, San Jose State Unversity Research Foundation, Santa Clara University
May 17, 2016
Flight Test of Explicit and Implicit Rotor-State Feedback Fly-By-Wire Control Laws
- Presented at Forum 72
- 22 pages
- SKU # : 72-2016-174
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Flight Test of Explicit and Implicit Rotor-State Feedback Fly-By-Wire Control Laws
Authors / Details: Christina Ivler, M. Hossein Mansur and Zachariah Morford, US Army; Kevin Kalinowski, Dell Services Federal Government; Marit Knapp, San Jose State Unversity Research Foundation, Santa Clara UniversityAbstract
Rotor-state feedback (RSF) technology uses tip-path-plane measurements of the rotor to improve the tracking response of the aircraft in winds and turbulence, and provide improved stability margins. Three fly-by-wire control systems were designed and flight tested on the RASCAL JUH-60A aircraft to determine the benefits of RSF. A Baseline control system that used only conventional fuselage feedback but was optimized for Level 1 performance was compared to two control systems that used both rotor-state and fuselage feedback (and were also optimized for Level 1). The Implicit RSF control system implemented fuselage feedback and estimated (implicit) rotor-state feedback. The Explicit RSF control system implemented fuselage feedback and measured (explicit) rotor-state feedback via a laser measurement system installed on the aircraft. The sensor characteristics, frequency response validation, handling qualities ratings, and MTE tracking performance for hover/low-speed are discussed in this paper.
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Flight Test of Explicit and Implicit Rotor-State Feedback Fly-By-Wire Control Laws
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