L1 stability augmentation system for Calspan’s variable-stability learjet

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

doi:10.2514/6.2016-0631

L₁ stability augmentation system for Calspan’s variable-stability learjet

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper presents a flying qualities evaluation of an L₁ adaptive flight control law implemented on Calspan’s variable-stability Learjet aircraft. 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. All of these off-nominal configurations were opaque to the control law, and no fault detection and isolation methods were employed. The results demonstrated that the L₁ flight control law was able to significantly restore the flying qualities of a baseline Learjet model. The flight tests were conducted by the U.S. Air Force Test Pilot School at the Edwards Air Force Base, CA. The companion paper [1] presents the results of a handling qualities assessment, which complement the flight test results presented here.

Original language	English (US)
Title of host publication	AIAA Guidance, Navigation, and Control Conference
Publisher	American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)	9781624103896
DOIs	https://doi.org/10.2514/6.2016-0631
State	Published - 2016
Event	AIAA Guidance, Navigation, and Control Conference, 2016 - San Diego, United States Duration: Jan 4 2016 → Jan 8 2016

Publication series

Name	2016 AIAA Guidance, Navigation, and Control Conference

Other

Other	AIAA Guidance, Navigation, and Control Conference, 2016
Country/Territory	United States
City	San Diego
Period	1/4/16 → 1/8/16

ASJC Scopus subject areas

Aerospace Engineering
Electrical and Electronic Engineering
Control and Systems Engineering

Online availability

10.2514/6.2016-0631

Library availability

Discover UIUC Full Text

Cite this

Ackerman, K. A., Xargay, E., Choe, R., Hovakimyan, N., Cotting, M. C., Jeffrey, R. B., Blackstun, M. P., Paul Fulkerson, T. P., Lau, T. R., & Stephens, S. S. (2016). L₁ stability augmentation system for 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. https://doi.org/10.2514/6.2016-0631

L₁ stability augmentation system for Calspan’s variable-stability learjet. / Ackerman, Kasey A.; Xargay, Enric; Choe, Ronald et al.
AIAA Guidance, Navigation, and Control Conference. American Institute of Aeronautics and Astronautics Inc, AIAA, 2016. (2016 AIAA Guidance, Navigation, and Control Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ackerman, KA, Xargay, E, Choe, R, Hovakimyan, N, Cotting, MC, Jeffrey, RB, Blackstun, MP, Paul Fulkerson, TP, Lau, TR & Stephens, SS 2016, L₁ stability augmentation system for 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, AIAA Guidance, Navigation, and Control Conference, 2016, San Diego, United States, 1/4/16. https://doi.org/10.2514/6.2016-0631

@inproceedings{49be42f63e774000983a15ed0d183542,

title = "L1 stability augmentation system for Calspan{\textquoteright}s variable-stability learjet",

abstract = "This paper presents a flying qualities evaluation of an L1 adaptive flight control law implemented on Calspan{\textquoteright}s variable-stability Learjet aircraft. 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. All of these off-nominal configurations were opaque to the control law, and no fault detection and isolation methods were employed. The results demonstrated that the L1 flight control law was able to significantly restore the flying qualities of a baseline Learjet model. The flight tests were conducted by the U.S. Air Force Test Pilot School at the Edwards Air Force Base, CA. The companion paper [1] presents the results of a handling qualities assessment, which complement the flight test results presented here.",

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

note = "Publisher Copyright: {\textcopyright} 2016 American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.; AIAA Guidance, Navigation, and Control Conference, 2016 ; Conference date: 04-01-2016 Through 08-01-2016",

year = "2016",

doi = "10.2514/6.2016-0631",

language = "English (US)",

isbn = "9781624103896",

series = "2016 AIAA Guidance, Navigation, and Control Conference",

publisher = "American Institute of Aeronautics and Astronautics Inc, AIAA",

booktitle = "AIAA Guidance, Navigation, and Control Conference",

}

TY - GEN

T1 - L1 stability augmentation system for Calspan’s variable-stability learjet

AU - Ackerman, Kasey A.

AU - Xargay, Enric

AU - Choe, Ronald

AU - Hovakimyan, Naira

AU - Cotting, M. Christopher

AU - Jeffrey, Robert B.

AU - Blackstun, Margaret P.

AU - Paul Fulkerson, T. Paul

AU - Lau, Timothy R.

AU - Stephens, Shawn S.

PY - 2016

Y1 - 2016

N2 - This paper presents a flying qualities evaluation of an L1 adaptive flight control law implemented on Calspan’s variable-stability Learjet aircraft. 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. All of these off-nominal configurations were opaque to the control law, and no fault detection and isolation methods were employed. The results demonstrated that the L1 flight control law was able to significantly restore the flying qualities of a baseline Learjet model. The flight tests were conducted by the U.S. Air Force Test Pilot School at the Edwards Air Force Base, CA. The companion paper [1] presents the results of a handling qualities assessment, which complement the flight test results presented here.

AB - This paper presents a flying qualities evaluation of an L1 adaptive flight control law implemented on Calspan’s variable-stability Learjet aircraft. 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. All of these off-nominal configurations were opaque to the control law, and no fault detection and isolation methods were employed. The results demonstrated that the L1 flight control law was able to significantly restore the flying qualities of a baseline Learjet model. The flight tests were conducted by the U.S. Air Force Test Pilot School at the Edwards Air Force Base, CA. The companion paper [1] presents the results of a handling qualities assessment, which complement the flight test results presented here.

UR - http://www.scopus.com/inward/record.url?scp=85087241279&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85087241279&partnerID=8YFLogxK

U2 - 10.2514/6.2016-0631

DO - 10.2514/6.2016-0631

M3 - Conference contribution

AN - SCOPUS:85087241279

SN - 9781624103896

T3 - 2016 AIAA Guidance, Navigation, and Control Conference

BT - AIAA Guidance, Navigation, and Control Conference

PB - American Institute of Aeronautics and Astronautics Inc, AIAA

T2 - AIAA Guidance, Navigation, and Control Conference, 2016

Y2 - 4 January 2016 through 8 January 2016

ER -