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Study on Force-thermal Impacts of Inclined Hot Launch of Mars Ascent Vehicle
Received date: 2024-11-18
Online published: 2025-05-15
The launch of the Mars ascent vehicle(MAV) is the first step for ascent from the Martian surface to orbit around Mars, a critical step in the Mars sample return mission. In the MAV's inclined hot launch process, the force-thermal impacts are significant and gas flow structure is complex, so when designing its launch system, it is necessary to consider the complex force-thermal effect in launching process. This study employs computational fluid dynamics to conduct a numerical simulation of the force-thermal impacts of the MAV's inclined thermal launch on the Martian surface, with comparisons to similar launch conditions on earth. The findings reveal that during the inclined hot launch from Mars, the MAV's maximum surface temperature reaches 2 868 K, while the launch platform attains a peak temperature of 2 908 K. Furthermore, during ejection, the platform's pitch-up moment progressively increases, the launch apparatus may topple under Mars' low-gravity conditions. Notable differences are observed between inclined hot launch processes on Mars and Earth; the MAV launch on Mars exhibits greater stability yet endures more severe force-thermal impacts on both the platform and the MAV.
XIONG Zongjian , ZHAO Yuchen , JIANG Yi . Study on Force-thermal Impacts of Inclined Hot Launch of Mars Ascent Vehicle[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2025 , 45(2) : 129 -137 . DOI: 10.15892/j.cnki.djzdxb.2025.02.001
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