Integrated flight/thrust vectoring control for jet-powered unmanned aerial vehicles with ACHEON propulsion

Cen, Zhaohui, Smith, Tim, Stewart, Paul and Stewart, Jill (2015) Integrated flight/thrust vectoring control for jet-powered unmanned aerial vehicles with ACHEON propulsion. Proceedings of the Institute of Mechanical Engineers, Part G; Journal of Aerospace Engineering, 229 (6). pp. 1057-1075. ISSN 0954-4100

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As a new alternative to tilting rotors or turbojet vector mechanical oriented nozzles, ACHEON (Aerial Coanda
High Efficiency Orienting-jet Nozzle) has enormous advantages because it is free of moving elements and highly
effective for Vertical/Short-Take-Off and Landing (V/STOL) aircraft. In this paper, an integrated flight/ thrust vectoring
control scheme for a jet powered Unmanned Aerial Vehicle (UAV) with an ACHEON nozzle is proposed to assess its
suitability in jet aircraft flight applications. Firstly, a simplified Thrust-Vectoring (TV) population model is built based
on CFD simulation data and parameter identification. Secondly, this TV propulsion model is embedded as a jet actuator
for a benchmark fixed-wing ‘Aerosonde’ UAV, and then a four “cascaded-loop” controller, based on nonlinear dynamic
inversion (NDI), is designed to individually control the angular rates (in the body frame), attitude angles (in the wind
frame), track angles (in the navigation frame), and position (in the earth-centered frame) . Unlike previous research on
fixed-wing UAV flight controls or TV controls, our proposed four-cascaded NDI control law can not only coordinate
surface control and TV control as well as an optimization controller, but can also implement an absolute self-position
control for the autopilot flight control. Finally, flight simulations in a high-fidelity aerodynamic environment are
performed to demonstrate the effectiveness and superiority of our proposed control scheme.

Keywords:Thrust-Vectoring, Unmanned Aerial Vehicles, Nonlinear Dynamic Inversion, Integrated Propulsion-based Flight Control
Subjects:H Engineering > H450 Propulsion Systems
H Engineering > H441 Flight Mechanics
Divisions:College of Science > School of Engineering
ID Code:29014
Deposited On:13 Oct 2017 08:28

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