Method for optimizing boost-skip trajectory of 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 missile trajectory optimization, and specifically relates to a boost-jump trajectory optimization method for an aspirated hypersonic missile. Background technique [0002] After the traditional air-breathing hypersonic missile is launched from the aerial platform, the built-in rocket booster will boost it to the altitude of the adjacent space and the flight speed of 4~5Ma, and then the scramjet engine will ignite and the missile will cruise in the adjacent space. Flying, when the missile approaches the target, it makes a dive attack. The cruise phase is the longest phase of the entire flight process. However, in the cruise phase, the missile’s overload is very small, the maneuverability is very limited, the flight altitude and speed are relatively stable, and it is likely to be captured and intercepted by the air defense system, which limits its penetration capability. . The air-breathing hypersonic missile tha...

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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