A Trajectory Optimization Method for Boost-energy Supplementing Skip Gliding Motion Base on Pseudospectral Method
Aiming at the energy-supplementing-jump gliding motion at the edge of the atmosphere,a whole space motion model of boost-energy-supplementing skip gliding and the dimensionless motion equation of energy-supplementing gliding stage is established.A dynamic piecewise serial optimization strategy based on Gauss pseudospectral method is proposed,which can efficiently solve the pitching program angle in boost stage,flight angle of attack in complementary energy-jump gliding stage,bank angle and energy supplementing time,and realize the integrated trajectory optimization design with continuous/discrete control variables.Simulations are carried out on the trajectory optimization of boost-energy supplementing skip gliding and quasi-equilibrium glide respectively,and the effectiveness of the segmented serial optimization strategy for boost-compensated jump glide trajectory is verified.At the same time,it is analyzed that the jump trajectory with supplemented energy has more advantages than the quasi-equilibrium glide trajectory in increasing flight time,range and maneuvering g-load ability under the same boost scale and aircraft mass.
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