“Can I get L1 on?” Providing consistent handling qualities on Calspan’s variable-stability learjet

M. Christopher Cotting, Robert B. Jeffrey, Margaret P. Blackstun, T. Paul Fulkerson, Timothy R. Lau, Shawn S. Stephens, Kasey A. Ackerman, Enric Xargay, Ronald Choe, Naira Hovakimyan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a handling qualities assessment of Calspan’s variable-stability Lear- jet aircraft augmented with an L1 adaptive flight control law. The variable-stability capability of the aircraft was used to alter its apparent dynamics while in flight, allowing the validation of the L1 flight control law against a set of off-nominal aircraft configurations, some of them with aggressive tendencies to adverse pilot-aircraft interaction. All of these off-nominal configurations were opaque to the control law, and no fault detection and isolation methods were employed. The results demonstrate that the L1 flight control law was able to recover consistent and safe handling qualities across all configurations. The evaluation also included a series of straight-in landings with two different aircraft configurations. Results which demonstrate the ability of the L1 flight control law to significantly restore the flying qualities of a baseline Learjet model are presented in the companion paper [1]. The flight tests were conducted by the U.S. Air Force Test Pilot School at Edwards Air Force Base, CA.

Original languageEnglish (US)
Title of host publicationAIAA Guidance, Navigation, and Control Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103896
StatePublished - Jan 1 2016
EventAIAA Guidance, Navigation, and Control Conference, 2016 - San Diego, United States
Duration: Jan 4 2016Jan 8 2016

Publication series

Name2016 AIAA Guidance, Navigation, and Control Conference

Other

OtherAIAA Guidance, Navigation, and Control Conference, 2016
CountryUnited States
CitySan Diego
Period1/4/161/8/16

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ASJC Scopus subject areas

  • Control and Systems Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering

Cite this

Cotting, M. C., Jeffrey, R. B., Blackstun, M. P., Fulkerson, T. P., Lau, T. R., Stephens, S. S., Ackerman, K. A., Xargay, E., Choe, R., & Hovakimyan, N. (2016). “Can I get L1 on?” Providing consistent handling qualities on Calspan’s variable-stability learjet. In AIAA Guidance, Navigation, and Control Conference (2016 AIAA Guidance, Navigation, and Control Conference). American Institute of Aeronautics and Astronautics Inc, AIAA.