A boost-jump trajectory optimization method for an air-breathing hypersonic missile

Abstract

The invention relates to a method for optimizing a boost-skip trajectory of an air-breathing hypersonic missile, and is technically characterized by comprising the steps of designing an air-breathing hypersonic missile trajectory scheme in which a scramjet engine ignites in an intermittent and periodic manner; establishing an air-breathing hypersonic missile longitudinal plane whole trajectory equations of motion including direct force control; and solving the trajectory optimizing problem by using a self-adaptive pseudo-spectral method The optimized boost-skip trajectory significantly improves the range of the missile, with the range being 3.81 times of a boost-cruise trajectory of a conventional air-breathing hypersonic missile; and the designed flight height of the boost-skip trajectory is not fixed and is relatively high at most of the time, a higher penetration capability is gained, and the trajectory mode has very promising prospects.

Description

technical field [0001] The invention mainly belongs to the field of ballistic optimization of missiles, and in particular relates to a boost-jump ballistic optimization method of an air-breathing hypersonic missile. Background technique [0002] After the traditional air-breathing hypersonic missile is launched from the air platform, its built-in rocket booster boosts it to the height of the adjacent space and the flight speed of 4-5Ma, and then the scramjet engine is ignited, and the missile cruises in the adjacent space Fly, and perform a dive attack as the missile approaches the target. The cruising phase is the most time-consuming stage of the entire flight process. However, during the cruising phase, the missile's overload is very small, its maneuverability is very limited, and its flight altitude and speed are relatively stable. It is likely to be captured and intercepted by the air defense system, which limits its penetration capability. . The air-breathing hyperson...

AI Technical Summary

Problems solved by technology

In addition, compared with re-entry vehicles, the existing air-breathing hypersonic missiles have very little overload in the cruising section, and cannot complete the missile's jump trajectory. In order to make the missile have greater maneuverability, it is necessary to use direct force / aerodynamic force control method to generate greater overload, so the thrust of the orbital control engine must be included in the control variable, which further increases the complexity of ballistic design

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