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首页> 外文期刊>Journal of Fluid Science and Technology >Design optimization of launch vehicle concept using cluster hybrid rocket engine for future space transportation
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Design optimization of launch vehicle concept using cluster hybrid rocket engine for future space transportation

机译：集束混合火箭发动机用于未来航天运输的运载火箭概念设计优化

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This paper reports on the conceptual design of a three-stage launch vehicle (LV) with a clustered hybrid rocket engine (HRE) through multi-disciplinary design optimization. This LV is a space transportation concept that can deliver micro-satellites to sun-synchronous orbits (SSOs). To design a high-performance LV with HRE, the optimum size of each component, such as an oxidizer tank containing liquid oxidizer, a combustion chamber containing solid fuel, a pressurizing tank, and a nozzle, should be determined. In this study, paraffin (FT-0070) is used as a propellant for the HRE, and three cases are compared: In the first case, HREs are optimized for each stage. In the second case, HREs are optimized together for the first and second stages but separately for the third stage. In the third case, HREs are optimized together for each stage. The optimization results show that the performance of the design case that uses the same HREs in all stages is 40% reduced compared with the design case that uses optimized HREs for each stage.
机译：本文通过多学科设计优化，报告了具有集群式混合火箭发动机（HRE）的三级运载火箭（LV）的概念设计。该LV是一种空间运输概念，可以将微卫星运送到太阳同步轨道（SSO）。为了设计带有HRE的高性能LV，应确定每个组件的最佳尺寸，例如装有液体氧化剂的氧化剂罐，装有固体燃料的燃烧室，加压罐和喷嘴。在本研究中，将石蜡（FT-0070）用作HRE的推进剂，并比较了三种情况：在第一种情况下，针对每个阶段优化了HRE。在第二种情况下，针对第一阶段和第二阶段对HRE进行了优化，但对于第三阶段则分别进行了优化。在第三种情况下，针对每个阶段一起优化HRE。优化结果表明，与在每个阶段使用优化的HRE的设计案例相比，在所有阶段使用相同的HRE的设计案例的性能降低了40％。

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