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[1]孙羽键,李广,徐自力,等.重复使用火箭发动机涡轮泵载荷谱编制方法[J].火箭推进,2024,50(01):97-104.[doi:10.3969/j.issn.1672-9374.2024.01.009]
　SUN Yujian,LI Guang,XU Zili,et al.Compilation method of reusable rocket engine turbopump load spectrum[J].Journal of Rocket Propulsion,2024,50(01):97-104.[doi:10.3969/j.issn.1672-9374.2024.01.009]
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重复使用火箭发动机涡轮泵载荷谱编制方法

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 50 期数: 2024年01期 页码: 97-104 栏目: 目次 出版日期: 2024-02-28
Title:
Compilation method of reusable rocket engine turbopump load spectrum
文章编号:
1672-9374(2024)01-0097-08
作者:
孙羽键1; 李广1; 徐自力1; 杜大华2; 闫松2; 王珺2
1.西安交通大学 航天航空学院 复杂服役环境重大装备结构强度与寿命全国重点实验室,陕西 西安 710049; 2.西安航天动力研究所 航天液体动力全国重点实验室,陕西 西安 710100
Author(s):
SUN Yujian1;  LI Guang1;  XU Zili1;  DU Dahua2;  YAN Song2;  WANG Jun2
1.State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an 710049, China; 2.National Key Laboratory of Aerospace Liquid Propulsion, Xi'an Aerospace Propulsion Institute, Xi'an 710100, China
关键词:
重复使用;  涡轮泵;  多次点火;  载荷谱
Keywords:
reusable rocket;  turbopump;  multiple ignition;  loadspectrum
分类号:
V434.21
DOI:
10.3969/j.issn.1672-9374.2024.01.009
文献标志码:
A
摘要:
重复使用火箭一子级发动机通过多次点火将火箭送入预定轨道后,返回并定点回收,多次启动-关机会产生损伤累积及疲劳问题,掌握液体发动机涡轮泵真实载荷谱,是可重复使用火箭发动机研制中一项重要工作。针对重复使用火箭一子级发动机涡轮泵提出了载荷谱编制方法。根据回收任务方案,确定任务全周期飞行剖面,建立火箭动力学方程,计算一子级各飞行剖面发动机推力调节范围及质量流量。基于推进剂组分、质量流量等参数推算涡轮泵转速及功率变化,编制转速谱和功率谱。通过对SpaceX公司猎鹰9一子级陆地回收任务CRS-11分析,编制该任务全周期载荷谱,得到一子级发动机推力谱、涡轮泵转速谱和功率谱,通过真实推力数据验证载荷谱编制方法。研究结果可为重复使用发动机研制提供支撑。
Abstract:
Abstract:The first sub-stage engine of the reusable rocket sends the rocket into the predetermined orbit through multiple fires, returns and recovers at a fixed point, and the damage accumulation and fatigue problems will occur after multiple starts and shutdowns. It is an important work in the development of the reusable rocket engine to master the real load spectrum of the liquid engine turbo pump. A load spectrum programming method is proposed for the reuse of the first substage engine turbopump of rocket. According to the recovery mission plan, the full cycle flight profile of the mission is determined, the rocket dynamics equation is established, and the thrust adjustment range and mass flow rate of the engine in each flight profile of a substage are calculated. Based on propellant composition, mass flow rate and other parameters, the speed and power changes of a turbopump are calculated, and the speed spectrum and power spectrum are prepared. Based on the analysis of SpaceX Falcon 9 sub-stage land recovery mission CRS-11, the full cycle load spectrum of the mission is compiled, and a sub-stage engine thrust spectrum, turbopump speed spectrum and power spectrum are obtained. The load spectrum compilation method is verified by the real thrust data. The research results can provide support for the development of reusable engines.

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备注/Memo

收稿日期:2023- 11- 28 修回日期:2023- 12- 27
基金项目:国家重点实验室基金(6142704190404)
作者简介:孙羽键(1994—),女,博士,研究领域为叶片轮盘强度与振动。
通信作者:徐自力(1967—),男,教授,研究领域为动力与推进装备强度及振动。

更新日期/Last Update: 1900-01-01