Development and on-orbit operation of nano-satellite systems enabling to rapidly demonstrate new space technologies

本研究于2005年7月利用M-V-8火箭成功地进行了纳米卫星分离机构的在轨演示系统，提出并研制了一颗纳米卫星CUT-1.7+APD。任务包括基于个人数字助理(PDA)的机载计算机演示、使用磁力矩的姿态控制实验、业余无线电服务-数字中继器、系绳展开实验和雪崩光电二极管(雪崩光电二极管)传感器演示实验。2006年2月，日本宇宙航空研究开发机构/伊萨斯M-V-8火箭作为子有效载荷发射了CUT-1.7+雪崩探测器，并运行了一个月以确认其基本功能。在很短的时间内彻底研究了CUT-1.7+APD存在的问题，并迅速研制了改进的后续卫星CUIT-1.7+APDII，以实现所有任务。CUT-1.7+APDII将于2007年由印度火箭PSLV发射。2005年10月，俄罗斯科斯莫斯火箭研制并发射了一颗微微卫星XI-V，并在轨道上全面运行。任务包括CIGS(铜铟镓双硒)薄膜太阳能电池的演示，精密测量电路，相机控制软件的改进，以及信息传输服务。还提出了用于遥感任务的5公斤级卫星棱镜。重点研究了基于可伸缩吊臂的光学系统的开发。从BBM阶段到EM阶段的开发令人满意，并进行了包括辐射测试在内的各种功能测试。这些卫星将于2008年夏天由H-IIA发射。这些卫星的成功将很好地说明这样一个事实，即小卫星，特别是纳米级或微微级卫星，为在空间环境中展示新的空间技术提供了良好的机会。

In this research, an on-orbit demonstration system of separation mechanism for nano-satellites was successfully conducted on July in 2005 by M-V-8 rocket, and a nano-satellite Cute-1.7 + APD was proposed and developed. The missions include demonstrations of a PDA (personal digital assistant) based onboard computer, attitude control experiment using magnetic torquers, amateur radio service - digital repeater, tether deployment experiment, and APD (avalanched photo diode) sensor demonstration experiment as a scientific mission. Cute-1.7 + APD was launched by the JAXA/ISAS M-V-8 Rocket as a subpayload on February in 2006, and was operated for a month to confirm its fundamental functions. The problems in Cute-1.7+APD are thoroughly investigated in a very short period and the improved follow-on satellite Cute-1.7+APD II was rapidly developed in order to achieve all of the missions. Cute-1.7 + APD II will be launched in 2007 by an Indian rocket PSLV. A pico-satellite XI-V was developed and launched on October in 2005 by a Russian rocket KOSMOS, and was fully operated on-orbit. The missions include demonstrations of CIGS (copper indium gallium di-selenide) thin-film solar cell, precise measurement circuit, improvement of camera control software, and message transmission service. A 5 kg class satellites PRISM was also proposed for remote sensing mission. In particular, development of an extensible boom-based optical system was focused. The development was satisfactorily conducted from BBM phase to EM one, and variable functional tests including radiation test were carried out. The satellites will be launched in summer of 2008 by a H-IIA. The success of these satellites will be good illustrations of the fact that small satellites, especially nano or pico-class satellites provide good opportunities for the demonstration of new space technology in space environment.