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[1]孔维鹏,谢恒,王晓丽.基于激光选区熔化技术的大尺寸喷注器设计[J].火箭推进,2023,49(04):68-73.
　KONG Weipeng,XIE Heng,WANG Xiaoli.Design of large dimensions injector based on selective laser melting technology[J].Journal of Rocket Propulsion,2023,49(04):68-73.
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基于激光选区熔化技术的大尺寸喷注器设计

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 49 期数: 2023年04期 页码: 68-73 栏目: 目次 出版日期: 2023-08-25
Title:
Design of large dimensions injector based on selective laser melting technology
文章编号:
1672-9374(2023)04-0068-06
作者:
孔维鹏; 谢恒; 王晓丽
(北京航天动力研究所,北京 100076)
Author(s):
KONG Weipeng;  XIE Heng;  WANG Xiaoli
(Beijing Aerospace Propulsion Institute, Beijing 100076, China)
关键词:
液体火箭发动机;  激光选区熔化;  增材制造;  喷注器;  同轴直流喷嘴;  液流试验;  热试验
Keywords:
liquid rocket engine;  selective laser melting;  additive manufacturing;  injector;  coaxial shear nozzle;  cold flow test;  hot-fire test
分类号:
V434
文献标志码:
A
摘要:
为研究激光选区熔化技术应用于大尺寸液体火箭发动机喷注器的可行性及最佳方案,按照先喷注单元后大尺寸喷注器的思路开展了设计研究。基于激光选区熔化技术设计了4种不同方案的喷注单元试验件,并进行了冷态液流试验对比。通过喷注单元对比试验得出直接采用激光选区熔化技术成型的喷嘴不适合直接用于大尺寸喷注器设计。根据喷注单元对比结果,选择了大尺寸喷注器的设计方案,生产了大尺寸喷注器,并进行了热试验考核。结果表明:采用激光选区熔化技术成型毛坯、机加工关键尺寸的设计方案为大尺寸喷注器的最佳方案。
Abstract:
In order to study the feasibility and the optimum scheme of selective laser melting technology applied to the injector of large dimensions liquid rocket engine, the design research was carried out according to the idea of injection unit first and then large dimensions injector. Four different schemes of injection unit test pieces were designed based on selective laser melting technology, and the cold flow test was carried out and the results were compared. Through the comparative test of injection unit, it was concluded that the injector formed by selective laser melting technology was not suitable for the design of large dimensions injector directly. According to the comparison results of the injection unit, the design scheme of the large dimensions injector was selected, the large dimensions injector was produced, and the liquid flow test and hot-fire test were carried out. The results show that the design scheme of forming blank and machining key dimensions by selective laser melting technology is the best scheme for large dimensions injector.

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备注/Memo

收稿日期:2022-11-05; 修回日期:2023-01-13
基金项目:国家装备预研航天科技联合基金(6141B061207)
作者简介:孔维鹏(1992—),男,博士,研究领域为液体火箭发动机燃烧装置设计。

更新日期/Last Update: 1900-01-01