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Physics and AstronomyMechanics

Review of Micro-Propulsion Ablative Devices

Authors: Michael Keidar; Iain D. Boyd; MICHIGAN UNIV ANN ARBOR DEPT OF AEROSPACE ENGINEERING
Abstract:
OUTLINE: * Examples of micro propulsion ablative devices * Fundamentals of ablation * Detailed analysis of specific devices: Micro-Pulsed Plasma Thruster -- Micro-Laser Plasma Thruster -- Micro-Vacuum Arc Thruster * SUMMARY: * Various microthruster technologies based on ablative mechanism were developed. * Self-consistent modeling approach for ablative micro-thrusters was formulated based on a kinetic ablation model and particle plume simulation. * Most extensive validation of the modeling approach was performed for micro-pulsed plasma thruster. Plasma density, surface temperature, ablation rate, ablation profile were compared with experiment. Optimization criteria were formulated for some devices, such as microPPT.

Limitations: APPROVED FOR PUBLIC RELEASE
Description: Briefing charts
Pages: 31
Report Date: 21 JUN 2004
Contract Number: F496200210084
Report Number: A054644
Keywords relating to this report:
*Ablative materials
*SPACE PROPULSION
EXHAUST PLUMES
KNUDSEN NUMBER
MICROPULSATIONS
PLASMA ENGINES
PULSED LASERS
SYMPOSIA
THRUSTERS
VACUUM
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