Progress on development of Al2O3-SiO2 Ceramic MEMS-based monopropellant micropropulsion systemm

Kean How Cheah, Kai Seng Koh, Choon Lai Chiang, Jit Kai Chin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

An Al2O3-SiO2 ceramic MEMS-based micropropulsion system was designed and fabricated using new fabrication route. The micropropulsion system consists of five major components: propellant reservoir, injector, electrodes, combustion chamber, and micronozzle; all integrated into a single volume of 20 mm × 20 mm × 5 mm. 85-15 wt% of HAN-water mixture was self-prepared and used as propellant along with electrolytic mechanism for ignition. Performance of the system was predicted numerically. The system was fabricated by microcasting the well-dispersed suspension of submicron Al2O3 powder and PSZ preceramic resin into a lithography-prepared PDMS soft mold and sintering at 1200°C to form the ceramic composite. Shrinkage of about 20% was noticed after sintering. TGA analysis reveals good thermal stability of the composite as weight loss at temperature of 1000°C is as small as 1.3wt%. SEM-EDX analysis verifies the formation of Al2O3-SiO2 composite as only elements of Al, O, and Si exist with a negligible amount of residual carbon. Current fabrication route hold the promise to fabricate MEMS micropropulsion system using different ceramic composite materials to meet different design requirements.

Original languageEnglish
Title of host publication47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011
Publication statusPublished - 2011
Event47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011 - San Diego, CA, United States
Duration: 31 Jul 20113 Aug 2011

Conference

Conference47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011
CountryUnited States
CitySan Diego, CA
Period31/07/113/08/11

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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