Discrete-Event Drag-Modulated Guidance Performance for Venus Aerocapture
Discrete-Event Drag-Modulated Guidance Performance for Venus Aerocapture
- Neue Suche nach: Roelke, E.
- Neue Suche nach: Braun, R. D.
- Neue Suche nach: Roelke, E.
- Neue Suche nach: Braun, R. D.
Drag modulation provides a straightforward approach to aerocapture trajectory control. In this paper, two guidance algorithms are assessed for Venus aerocapture: a predictive-trigger and a numerical predictor–corrector. A hybrid root finder is developed for both single- and multistage jettison. Architecture performance is assessed using Monte Carlo methods. Two apoapsis altitude targets, 2000 and 10,000 km, are considered alongside two entry flight-path angles, and . The hybrid root finder improved targeting accuracy and robustness compared with a standard bisection technique. Each of the guidance algorithms performed better for shallower entry angles. The benefit of multi-event jettison architectures is analyzed in this study. A second jettison event is shown to significantly improve apoapsis targeting accuracy, whereas a third jettison event further improves this accuracy, but to a lesser degree, demonstrating multistage jettison’s potential to improve aerocapture robustness.
Dokumentinformationen
Discrete-Event Drag-Modulated Guidance Performance for Venus Aerocapture
Journal of Spacecraft and Rockets ; 58 , 1 ; 190-199
2020-08-06
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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