A sliding mode terminal guidance strategy is developed for an unpowered reusable launch vehicle (RLV) during the terminal area energy management (TAEM) phase. The main idea is to use the finite-time reaching phase of the sliding mode method to solve the three-dimensional (3D) guidance problem with multiple flight constraints. Firstly, the mathematical model of a RLV in the altitude domain is provided, based on which a new sliding surface is constructed to account for multiple constraints on terminal conditions and dynamic pressure profile. Subsequently, a second-order sliding mode guidance law is constructed to ensure the reaching of the sliding surface at a specific altitude. Finally, the effectiveness of the proposed guidance strategy in both nominal case and the case of bank limitations is illustrated by the numerical simulations.
Sliding Mode Guidance for 3D Gliding Motions with Bank Limitations
2018-08-01
303140 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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