Automatic Control of Harrier Maneuver of an Agile Fixed-Wing UAV

K. K.Sajith Kumar, Hemendra Arya, Ashok Joshi

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

1 Citation (Scopus)


In this paper, a gain scheduled linear state feedback based longitudinal control is applied to an agile fixed-wing unmanned aerial vehicle (UAV) to achieve transition between level flight at low angle of attack (cruise at angle of attack (AOA) = 4° and level flight at high angle of attack (harrier level at AOA = 50°. For both the level flight regimes, the elevator deflection and propeller rotations per minute (RPM) are computed using a linear quadratic regulator (LQR) control designed about the respective trim states. For cruise to harrier and harrier to cruise transitions, a minimum time optimal trajectory is generated off-line and the same is tracked using a linear state feedback control. Simulations of the control implemented on a longitudinal model of an agile fixed-wing UAV which includes propwash, wing downwash, flat plate post-stall aerodynamics and actuator constraints (first order dynamics, saturation and rate limit) are carried out. The results show that the control scheme is successful in achieving transition between cruise and harrier level flights.

Original languageEnglish
Title of host publication2019 5th Indian Control Conference, ICC 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)9781538662465
Publication statusPublished - 14-05-2019
Event5th Indian Control Conference, ICC 2019 - Delhi, India
Duration: 09-01-201911-01-2019

Publication series

Name2019 5th Indian Control Conference, ICC 2019 - Proceedings


Conference5th Indian Control Conference, ICC 2019

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Control and Optimization


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