西北工业大学翱翔一号作为欧盟第七框架协议-QB50立方星网络大气探测项目中50颗立方星中的一员，将通过搭载多种大气传感器实现对于低热层大气中性粒子、带电离子、大气阻力参数等的全面探测。对翱翔一号在低热层飞行过程中影响其轨道寿命的主要因素进行分析，并针对不同的发射月份采取多种大气模型进行了分析与仿真，通过仿真可以看出同一个月内发射，当采用不同大气模型时轨道的寿命具有差异。采用同一大气模型，在不同的月份进行发射，立方星的在轨天数也不同，大约在90～120天之间。由于QB50项目中50颗立方星质量相近，轨道高度、轨道倾角相同，因此，文中的研究工作对整个卫星网络的在轨时间估计、任务规划、对各卫星再入返回时间估计分析有重要借鉴意义。%AoXiang-1 of Northwestern Polytechnical University is one of the 50 CubeSats in the European Union ’ s 7th Framework project “An international network of 50 double CubeSats for multi-point, in-situ, long-duration measurements in the lower thermosphere and for re-entry research”.It will carry many kinds of atmosphere sensors to detect the neutral particles, ion particles, atmospheric drag, etc.This article analyzes the main factors that affect the orbit life of AoXiang-1 in the lower thermosphere .It uses different launch months and atmosphere models to ana-lyze and simulate the lifetime of the CubeSat .The result is that for the same launch time but different atmosphere models or for the same atmosphere model but different launch times , the lifetime is different .The lifetime varies from 90 to 120 days.As all 50 double CubeSats in QB 50 have nearly the same mass and as all 50 double CubeSats have the same orbit height and the same orbit inclination , the research of this paper is very important to the CubeSat network lifetime estimation , mission plan and its re-entry time estimation.
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