Volume 38, Number 6, December 2020
|Page(s)||1266 - 1274|
|Published online||02 February 2021|
Hurdle-Hop Simulation of Tilt-Rotor Aircraft Based on Optimal Control Theory
Science and Technology on Rotorcraft Aeromechanics Laboratory, China Helicopter Research and Development Institute, Jingdezhen 333001, China
Aiming at simulating the hurdle-hop of tilt-rotor aircraft in forward flight near the ground, two models of numerical simulation and analysis based on optimal control theory were proposed. Firstly, Longitudinal flight dynamic model for tilt-rotor was modified considering the influence of ground effect. Secondly, the first model is combined with predicted trajectory from inverse simulation method, the inverse model of hurdle-hop of tilt-rotor is established based on optimal trajectory, and the second model is the optimal control model of unpredicted trajectory, which is formulated from the reasonable function of objective, path and boundary constraints for hurdle-hop with detailed analysis, solved two models by direct multiple shooting method and nonlinear programming algorithm. Finally, XV-15 as the sample vehicle. Two models for hurdle-hop based on optimal control theory was calculated, the history of optimal flight trajectory and control are given.
Key words: hurdle-hop / tilt-rotor / optimal control / nonlinear programming
关键字 : 跃障机动 / 倾转旋翼机 / 最优控制 / 非线性规划
© 2020 Journal of Northwestern Polytechnical University. All rights reserved.
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