Ground and flight tests of AlSat-1B butane propulsion system

作     者：D.Darfilala D.Gibbon 

作者机构：Satellite Development Center CDSAlgerian Space Agency ASALBP 4065Ibn Rochd USTOOran31130Algeria Surrey Satellite Technology Ltd.GuildfordSurrey GU27YEUnited Kingdom 

出 版 物：《Propulsion and Power Research》 (推进与动力（英文）)

年 卷 期：2022年第11卷第1期

页      面：74-84页

核心收录：

学科分类：08[工学] 0807[工学-动力工程及工程热物理] 082503[工学-航空宇航制造工程] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 

基　　金：Satellite Development Center Surrey Satellite Technology Chinese Diabetes Society, CDS 

主　　题：Space Propulsion Butane Resistojet Heaters Specific impulse 

摘      要：On September 26,2016 Algerian Space Agency launched AlSat-1B,the second in a series of medium resolution earth observation satellites mission.AlSat-1B electro-thermal propulsion system follows the classic design principle that has been used on previous SSTL-100 missions.With a total dry weight of 5.17 kg,the system is filled with 2.35 L selfpressurized butane.The thruster assembly is designed to use 15 W(at 28 V)redundant heater elements,it is designed to have an average mission thrust of 50 mN.With a warm up time of 10 min,the temperature of the butane will be increased by over 250℃.This is the equivalent of about 35%gain in specific impulse over ambient temperature butane.The spacecraft dry weigh at launch site was 107 kg,the propulsion system is designed to provide at least 19 m/s Delta-v to meet the spacecraft’s mission requirement.To investigate the system readiness for flight,a series of performance tests have been completed at the Surrey Satellite Technology Ltd laboratories(United Kingdom),Satellite Development Centre(Algeria)and Satish Dhawan Space Centre rocket launch site(India),the results of these tests as well as initial flight test results are presented in this paper.