摘要火箭发动机是各类火箭、导弹和航天器最主要的动力装置, 火箭发动机技术的发展对航天技术的发展起着关键性的作用。本文介绍了一种使用凝胶单组元推进器的新型火箭推进系统,这种发动机能比其他大多数火箭发动机提供更高的推进力,并可进行多次启动。它拓宽了推进剂的可能组分选择,能比固体火箭发动机增加更多的推力,同时又比液体火箭发动机更能简化制造和降低成本与质量。本文主要介绍了凝胶燃气发生器雾化系统的设计及制造,凝胶燃气发生器供给系统的及设计及制造,减速器的设计等。63501
关键词 燃气发生器 雾化系统 供给系统 减速器
毕业设计说明书(毕业论文)外文摘要
Title Deep Regulation and Reusable Rocket Propulsion Using Premixed Slurry Propellant
Abstract Rocket engine is all kinds of rockets, missiles and spacecraft's main power plant .The development of rocket engine plays a key role in the development of aerospace technology. This paper describes a novel rocket motor using a premixed slurry monopropellant with no propellant polymerization. The slurry monopropellant is a non-Newtonian fluid that can be injected into the combustion chamber, where regulation of the flow rate allows a deeper regulation of the thrust than is possible in most liquid rocket motors. Multiple starts are also possible. The slurry monopropellant broadens the choices of possible propellant components, and it enables an increase in specific thrust compared with solid rocket motors while at the same time simplifying construction and reducing the cost and mass compared with liquid rocket motors. In this paper describes gas generator atomization system's design and manufacture, supply system's design and manufacture, reducer's design and lead screw service life's checking.
Keyword Gas generator Atomization system Supply system Reducer
1 绪论 1
1.1 研究背景与科学意义 1
2 凝胶(膏体)燃气发生器 11
2.1 凝胶燃气发生器的工作原理 11
2.2 凝胶燃气发生器的组成及设计要求 11
2.3 凝胶燃气发生器雾化系统 13
2.4 凝胶燃气发生器供给系统 16
2.5 滚珠丝杠 21
3 蜗轮蜗杆减速器设计 23
3.1 蜗轮蜗杆轴的参数 23
3.2 蜗轮蜗杆的选择 23
3.3 按计齿面接触疲劳强度计算进行设计 23
3.4 蜗杆与蜗轮的主要参数与几何尺寸 24
3.5 校核齿根弯曲疲劳强度 25
3.6 精度等级公差和表面粗糙度的确定 26
3.7 蜗杆轴的设计计算 26
3.8 涡轮轴的设计计算 28
3.9 蜗杆轴的校核 30
3.10 涡轮轴的强度校核 35
3.11 滚动轴承的选择及校核计算 40