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涡喷发动机具有结构以及制造工艺相对简单，耗油率低，推重比又高等优点，能够满足巡航导弹，巡飞弹以及无人机等微小型飞行器的动力需求。随着现在军事及民用设备的不断微小型化，微型涡喷发动机日益受到广泛的关注。涡喷发动机燃气压力、温度、涡轮的转速对发动机性能有着重要的影响,确保涡喷发动机各个零部件的工作条件在其材料的使用范围之内，保证发动机稳定高效的工作，对微型涡轮喷气发动机的关键性能进行测试非常必要。23711
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本文探讨了一种正在调试阶段的转速为120000/min，推力为200N的微型发动机的微型涡喷发动机的结构设计特点。首先介绍了微型涡喷发动机的整体结构特点；之后是对涡喷的发动机的基本工作原理的介绍以及各个部件的理论设计部分；最后是利用自己改进过的实验测试台对发动机的基本工作性能的测试部分。
关键词： 微型涡喷发动机 工作原理 热力计算 性能测试
毕业设计说明书（毕业论文）外文摘要
Title 20Kg micro turbojet engine design and performance testing
Abstract
Turbojet engine is not only has low fuel consumption as well as structure and manufacturing process is relatively easy, but also has high thrust-weight ratio advantage and is well able to meet the power demand of small aircraft, such as the unmanned aerial vehicles, cruise missiles and missile patrol, so the micro gas turbine engine attracts increasingly widespread concern. In the combustion chamber of micro gas turbine engine, temperature, pressure, speed of gas has an important effect on engine performance. It is necessary for the testing test to ensure all the micro gas turbine engine performance indicators in line with requirements of the material environment as well as it could work properly and efficiently.
This paper discusses a commissioning phase of the speed of 120000/min, thrust for the features of structure design of micro turbine jet engine of 200N. First introduced the overall structure of micro turbojet engine; after the theoretical part of the basic working principle of the turbojet engine and the introduction of the various components of the test section; finally is the basic performance test bench used our modified engine branch.
Key word: Micro turbojet engine Working principle Thermodynamic calculation Performance test
目 录
1 绪论 1
1.1 涡轮喷气发动机的历史 1
1.2 涡喷发动机的国内外发展状况 1
1.2.1 国外研究进展 1
1.2.2 国内发展概况 3
1.3 微型涡轮喷气发动机的总体构造特点 5
1.4 本文研究的主要内容 6
2 微型涡轮喷气发动机的设计过程 7
2.1 基本假设及关键参数的设定步骤 7
2.1.1 工作原理介绍 7
2.1.2 关键参数的确定 9
2.2 涡轮喷气发动机各部件设计和设计要求 11
2.2.1 压气机的选择和结构 11
2.2.2 燃烧室的结构和选择 12
2.2.3 涡轮的结构和选择 16
2.2.4 尾喷管的选取 17
2.3 热力计算过程 18
3 发动机的性能测试台的搭建 21
3.1 MIK5000A宽屏彩色无纸记录仪的概述 21
3.2 推力传感器 23
3.3 压力传感器 24