Quick trajectory programming method based on smooth glide trajectory analytic solution

Abstract

The invention discloses a quick trajectory programming method based on a smooth glide trajectory analytic solution. The quick trajectory programming method based on the smooth glide trajectory analytic solution includes that step 1, modeling glide trajectory programming problems; step 2, designing glide trajectory programming variables; step 3, calculating a glide trajectory analytic solution; step 4, designing a glide trajectory terminal speed control scheme; step 5, designing a glide trajectory re-entry corridor regulating proposal; step 6, generating initial values of glide trajectory programming; step 7, designing a glide trajectory programming flow. The quick trajectory programming method based on the smooth glide trajectory analytic solution uses longitudinal maneuvering acceleration proportion coefficients and transverse maneuvering acceleration proportion coefficients as the glide trajectory programming variables so that differential equations of the trajectory inclination angle, trajectory deflection angle, height, longitude and latitude in motion equations do not comprise a speed item. The quick trajectory programming method based on the smooth glide trajectory analytic solution obtains the glide trajectory analytic solution corresponding to a fixed longitudinal maneuvering acceleration proportion coefficient and a fixed transverse maneuvering acceleration proportion coefficient.

Description

technical field [0001] The invention relates to a fast trajectory planning method based on the analytical solution of a smooth sliding trajectory, and belongs to the fields of aerospace technology and weapon technology. Background technique [0002] With the rapid development of hypersonic technology, reentry trajectory planning has become a research hotspot. The glide segment is the main component of the reentry trajectory, which determines the range and maneuvering range of the reentry flight. The rapid trajectory planning of the glide phase can not only analyze the performance of hypersonic vehicles, but also be used for online trajectory planning and predictive guidance, which has high research value. [0003] Due to the long flight time of the gliding trajectory, it is highly sensitive to the planning variables, and the nonlinear constraints of the reentry process are strong, so the feasible region of the gliding trajectory is narrow, and it often takes a long time to ...

AI Technical Summary

Problems solved by technology

However, due to the drastic changes in the environment before and after the gliding section, it is difficult to fit the trajectory of the whole gliding section with a low-order curve.

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