Design and fabrication of a MEMS-based millinewton level hydrazine thruster

Tony Yuan, Awankana Li

研究成果: Conference contribution

8 引文 斯高帕斯(Scopus)

摘要

A MEMS-based millinewton level hydrazine thruster was designed and tested in this research. The microthruster was composed of a microvalve, a microreactor, and a micronozzle. The detailed considerations of system and component designs were presented. For the microreactor, iridium coated micro catalytic bed was fabricated with a high flow path surface to volume ratio of 84mm2/mm3. The microreactor successfully proceeded hydrazine dissociation reactions and achieved desired ammonia dissociations over 90% at the hydrazine flow rates of interest. Bonded with the micronozzle, the microreactor/nozzle assembly produced an optimum performance at the hydrazine flow rate of 0.625mg/s, where a vacuum thrust of 0.99 mN was observed with a specific impulse close to 162s. A deficiency of 35% was estimated and considered mainly from the heat loss and viscous loss in microchannels. More effective thermal management should be developed in the future design. In addition, research on ICP etching control would be necessary to produce smoother surface to reduce the friction loss. This preliminary test result demonstrated the feasibility of utilizing hydrazine on MENS-based microthruster's operations.

原文English
主出版物標題45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
發行者American Institute of Aeronautics and Astronautics Inc.
ISBN(列印)9781563479762
DOIs
出版狀態Published - 2009

出版系列

名字45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

All Science Journal Classification (ASJC) codes

  • 航空工程
  • 控制與系統工程
  • 空間與行星科學
  • 能源(全部)
  • 電氣與電子工程
  • 機械工業

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