HYPERSONIC JET IMPINGEMENT DURING LANDING ON LUNAR AND MARTIAN SURFACES

提出的研究领域是在软着陆过程中，航天器反推进火箭喷嘴喷出的膨胀射流与行星体表面之间发生的复杂和非线性流体动力学相互作用，称为羽流表面相互作用（PSI）。这项工作将侧重于开发和评估一种方法，通过利用二次流来捕获风化层喷出物，同时使用超音速流体注入技术来最大限度地减少羽流驱动的表面变化，从而减轻负面羽流表面效应。这一建议的独特之处在于仅使用航天器上的硬件来实现这些目标

The proposed area of study is the complex and non-linear fluid dynamic interactions which occur between an ex- panding jet emitted from a spacecraft retro-propulsion rocket nozzle and the surface of a planetary body during a soft landing procedure, termed Plume Surface Interactions (PSI). The work will focus on the development and evaluation of a method of mitigating negative plume- surface effects by leveraging secondary flow to capture regolith ejecta, and simultaneously using supersonic fluidic injector technology to minimise plume-driven surface alteration. Unique to this proposal is the intended realisation of these goals using only spacecraft-borne hardware