Overview of Laser Ablation Micropropulsion Research Activities at DLR Stuttgart
作者： Christian Illg , Stefan Scharring , Stephanie Karg , Johannes M.F. Peter , Hans-Albert Eckel
DOI:
关键词: Laser 、 Laser ablation 、 Mechanical engineering 、 Thrust 、 Engineering 、 Orbit (dynamics) 、 Beam steering 、 Plasma 、 Specific impulse 、 Recoil
摘要: Microthrust engines (μN-mN) with high specific impulse and long lifetime that allow for precision attitude orbit control are a prerequisite planned future missions geodetic purposes or astronomic science. The potential of laser-ablative microthrusters meeting these demands is being investigated at the Institute Technical Physics. concept based on removal thin layer material by focusing short laser pulses metal surface creating plasma vapor. recoil ablated leads to momentum transfer target, which results in sub-μN mN thrust levels repetition rate sources. Additionally, implementing electro-optic beam steering layer-by-layer ablation material, moving parts can be significant disturbing factor precise thrusters could avoided this concept. To evaluate optimize thruster regards control, contamination issues experimental facilities comprising diagnostics balance have been implemented. In addition work, analytical calculations undertaken assess characteristics. Furthermore, variation parameters target using hydrodynamic simulation tool ablation, supplemented molecular dynamics simulations as well Direct Simulation Monte Carlo-Particle Cell (DSMC-PIC) cooperation University Stuttgart.
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