衛星推進技術

Current Implementation of the Language Gifted Education Program in National Lan Yang Girls' Senior High School

太空中心與成功大學航太中心共同發展先進衛星推進技術，2012年完成推進器與燃料槽原型設計、製造與初步的功能測試。首先在推進器方面，推進器地面測試環境推力約為0.6～0.7牛頓，大氣環境比衝（SpecificImpulse）約為119秒（推估真空環境數值為174秒）。推進器模組中的觸媒床加熱器，能有效地改善推進器啟動的特性，可於100 ms以內完成燃料氣化，有效縮短冷啟動時建壓延遲的時間。 To enhance the progress of self-reliant satellite propulsion development, NSPO is conducting a joint projectwith the Aerospace Science and Technology Research Center(ASTRC) of National Cheng Kung University(NCKU) . In 2012, the development of thruster and propellant tank prototypes were completed. For thrusters, themeasurements under ambient conditions indicated a thrust of 0.6-0.7 Newton and the specific impulse(Isp) of119 seconds would be achieved, which implies that the Isp in space would be 174 seconds. The thrusters will bestarted up within 0.1 seconds by applying catalyst bed heaters, and would be a major improvement over coldstartoperations. For the development of the propellant tank, three models have been built for various purposes.The 150 ml and 500 ml models were assembled for functional demonstration and mass reduction purposes.The preliminary test results show that the 2000 ml tank prototype model may function properly and satisfy thedevelopment goals. The construction of the Satellite Propulsion Laboratory in ASTRC has been finished and isdue to provide two test cells for hot-firing experiments in 2013.