摘要立方星是一种新概念的微型卫星,它具有研发周期短、成本低、功能针对性强、载荷接口灵活等常规卫星无法比拟的优点[1]，同时立方星应用的逐渐常态化也对卫星释放分离装置提出了新的要求[2]。本文在了解立方星释放分离机构的由来及发展的前提下，运用机械设计软件SolidWorks、AutoCAD，结合所学机械设计基础知识，完成双单元立方星释放分离装置工作原理的介绍和其实体部件的设计与制作。双单元立方星释放分离装置主要包括动力机构和防干涉的抱刹机构。其动力机构包括为立方星分离提供分离冲量的分离圆柱弹簧、为舱门开启提供扭矩的扭簧和为舱门打开提供动能的开启弹簧螺钉；其防干抱刹机构主要是由凸轮限位机构组成的抱刹装置和部署在卫星底托运动导轨上的限位机构。74515

毕业论文关键词  立方星  释放分离装置  原理介绍  结构设计

毕业设计说明书外文摘要

Title    Design and fabrication of the separation mechanism for a 2U CubeSat                   

Abstract Cube Sat is a kind of new concept of micro satellite, it has a short development cycle, low cost, high functionality targeted, flexible load interface and other advantages that the conventional satellite can not match 。 At the same time, the application of cubic satellite has put forward new requirements to the satellite release and separation mechanism。In this paper, we study the origin and development of the separation mechanism of the release and separation mechanism, and use the basic knowledge of mechanical design。On the basis of this, the paper introduces the working principle of the release and separation device of the twin cell Cube Sat, and the design and manufacture of the solid parts by using the mechanical design software SolidWorks and AutoCAD。 The release separation device mainly comprises a power system and an anti interference system。The power system comprises a cylinder spring, a torsion spring, and an opening screw。They provide separation impulse, torque and kinetic energy for the mechanism work。。he anti interference system is mainly composed of a holding brake device and a limit mechanism。The cam mechanism is composed of a lock brake, and a limit mechanism is deployed on the satellite bottom support motion guide rail。 

Keywords  Cube Sat   separation mechanism   Principle introduction Structure design

目次

目次 I

1  绪论 1

1。1研究背景 1

1。2  发展现状 2

1。3  研究目的及意义 7

1。4  主要研究内容 7

2。  功能模块总体设计 8

2。1  释放分离装置功能方案 9

2。2  舱门的闭合与开启 9

2。3  舱门开启装置 13

2。4  舱门的执行终止与卫星释放的承接 15

2。5  释放机构 19

2。6  支撑结构设计 23

2。7  分离装置与运载火箭的连接 24

3  机构总体优化设计 27

3。1  减重设计 27

3。2  蒙皮设计 32