Vaporizing water micro-thrusters are fabricated and tested. A single micro-thruster fabricated using MEMS technology consists of a micro-resistor, a vaporizing chamber, a nozzle, a propellant inlet and a micro channel. The water propellant is fed into the thruster from a propellant tank by capillary force and pressure. The micro-thruster is designed to operate in pulse mode. During each period, an electric pulse is applied to the micro-resistor to heat the water in the chamber to vaporize it into high-pressure gas. A thrust is then produced as the gas exits through the nozzle. Test results show that for a single micro-thruster with pulse power of 30 W, the total impulse produced in a second is more than 0.2x10-6 N s.
Study of a vaporizing water micro-thruster
2001
7 Seiten, 6 Quellen
Aufsatz (Konferenz)
Englisch
Simulation and experiment research on vaporizing liquid micro-thruster
Tema Archiv | 2010
|