Analytical Predictor-Corrector Guidance Algorithm Based on Drag Modulation Flight Control System for Mars Aerocapture

Aerocapture is one of the essential technologies for future large-scale space exploration missions, as it can significantly reduce the Δv and fuel requirement. The performance and robustness of two different aerocapture control methods are analyzed around Mars exploration, and then an analytic predi...

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Bibliographic Details
Published in:International journal of aerospace engineering 2018-01, Vol.2018 (2018), p.1-12
Main Authors: Lei, Han-lun, Fang, Bao-dong, Xu, Bo, Peng, Yu-ming
Format: Article
Language:English
Subjects:
Aerocapture
Aerospace engineering
Algorithms
Atmosphere
Atmospheric density
Computer simulation
Control methods
Controllers
Drag
Feedback control
Flight control systems
Laboratories
Linear functions
Mars
Mars exploration
Mars missions
Modulation
Parameter uncertainty
Predictor-corrector methods
Robustness (mathematics)
Rockets
Solar system
Space exploration
Velocity
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Summary:Aerocapture is one of the essential technologies for future large-scale space exploration missions, as it can significantly reduce the Δv and fuel requirement. The performance and robustness of two different aerocapture control methods are analyzed around Mars exploration, and then an analytic predictor-corrector guidance algorithm for drag modulation flight control system is proposed. A piecewise linear function between velocity and flight path angle is established by appropriate approximations and assumptions, and then the state at atmosphere interface can be predicted by an analytical method; therefore, aerocapture guidance can be realized by feedback control. Numerical simulation is used to evaluate performance and robustness of the algorithm. The simulation results show that the guidance algorithm is accurate and robust, which can effectively overcome the influence of atmospheric density error, aerodynamic parameter error, and initial state uncertainty.
ISSN:1687-5966
1687-5974
DOI:10.1155/2018/5907981