Evolved atmospheric entry corridor with safety factor

Liang, Zixuan; Zhang, Ren; Li, Qingdong

doi:10.1016/j.actaastro.2017.11.021

Cited by 13 publications

(1 citation statement)

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“…To apply a precise track to the standard trajectory online, profiles such as drag-energy, drag-speed, and altitude-speed have been proposed [17]- [19]. Later, the velocity-altitudeazimuth profile method was proposed and applied to achieve a controllable and reachable flight corridor [20]. The main purpose of these methods is tracking, but with new constraints added, such as no-fly zones and waypoint constraints, they lose their online applicability.…”

Section: Introductionmentioning

confidence: 99%

Improved Tentacle-Based Guidance for Reentry Gliding Hypersonic Vehicle With No-Fly Zone Constraint

et al. 2019

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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. INDEX TERMS Tentacle-based guidance, no-fly zone(NFZ), flight constraint, warning area, hypersonic vehicle.

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Section: Introductionmentioning

confidence: 99%