Fabrication and embedded sensors characterization of a micromachined water-propellant vaporizing liquid microthruster

Publication date: 1 Apr 2021

JournalSource: LEGACY

Rapid advances in micro/nanotechnology have enabled to achieve high levels of miniaturization, promoting the development of low cost and highly efficient microsystems for specific applications. In the space sector, the miniaturization of satellites has led to a renewed interest in the research and development of advanced micro-propulsion technologies able to generate small and accurate thrust forces and high specific impulse.This work presents the design and fabrication of a silicon-based water-propellant Vaporizing Liquid Microthurster (VLM) equipped with embedded microsensors for real-time monitoring of in-channel vapor/liquid fraction and fluid temperature during its operation. Anisotropic dry etching of silicon wafer and thermo-compressive bonding were chosen as key fabrication steps: the former process was used to better control the surface roughness on microchannels inner walls, the latter was used to …

Publisher
Pergamon
Origin
Applied Thermal Engineering
Legacy ID
08f8dcfc08fa991490a8433a49da3602
Biblio references
Volume: 188 Pages: 116625