Abstract
An improved tentacle-based bank-angle transient method that requires less computation and provides effective feedback is proposed to offer a new choice for reentry gliding hypersonic vehicle maneuvering guidance. The longitudinal guidance strategy of hypersonic vehicles is applied to track standard trajectories, and the improved tentacle-based bank angle transient lateral strategy avoids static or dynamic no-fly zones. The proposed lateral strategy generates three tentacles for detection, addresses numerical heading angle limitations or no-fly zone constraints, and provides control commands through a time-counting filter. Dispersed cases are verified for static no-fly zones, and a warning area is proposed to avoid dynamic no-fly zones. For dynamic no-fly zones, the velocity and initial position of the no-fly zone are discussed in terms of the impact on the guidance. Finally, the guidance strategy is tested on a high-performance Common Aero Vehicle model in many flights, and all results for the constraints and computation time indicate that the improved tentacle-based guidance method is effective for avoiding no-fly zones where some information is unknown.
Highlights
In recent decades, guidance studies on the reentry of hypersonic vehicles have been extensively conducted to develop the aerospace industry among the world’s great powers [1]–[11]
Gao et al.: Improved Tentacle-Based Guidance for Reentry Gliding Hypersonic Vehicle With NFZ Constraint the waypoints are studied and designed, and the trajectory optimization results of the segments are obtained quickly if the whole trajectory has been divided by the waypoints from the first
A maneuvering guidance strategy based on two tentacles is applied in hypersonic vehicles [26], where two tentacles are continuously generated forward to obtain feedback and to implement reversal control of the bank angle to avoid the no-fly zone without specific information
Summary
Guidance studies on the reentry of hypersonic vehicles have been extensively conducted to develop the aerospace industry among the world’s great powers [1]–[11]. Y. Gao et al.: Improved Tentacle-Based Guidance for Reentry Gliding Hypersonic Vehicle With NFZ Constraint the waypoints are studied and designed, and the trajectory optimization results of the segments are obtained quickly if the whole trajectory has been divided by the waypoints from the first. A maneuvering guidance strategy based on two tentacles is applied in hypersonic vehicles [26], where two tentacles are continuously generated forward to obtain feedback and to implement reversal control of the bank angle to avoid the no-fly zone without specific information. This method is not mature for three reasons.
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