elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Investigation of Laser-Ablative Micropropulsion as an Alternative Thruster Concept for Precise Satellite Attitude and Orbit Control

Karg, Stephanie and Fedotov, Vitalij (2013) Investigation of Laser-Ablative Micropropulsion as an Alternative Thruster Concept for Precise Satellite Attitude and Orbit Control. 13th ONERA-DLR Aerospace Symposium, 27. - 29. Mai 2013, Palaiseau, Frankreich.

Full text not available from this repository.

Abstract

Microthrust engines (µN-mN) with high specific impulse and long lifetime that allow for precision attitude and orbit control are a prerequisite for planned and future missions for geodetic purposes or astronomic science [1]. The potential of laserablative microthrusters for meeting these demands is being investigated at the Institute of Technical Physics [2, 3]. The concept is based on layer-by-layer removal of a thin layer of material by focusing short laser pulses on a metal surface creating plasma or vapor (laser ablation) [4]. The recoil of the ablated material leads to momentum transfer to the target, which results in sub-µN to mN thrust levels for high repetition rate laser sources [5]. Additionally, by implementing electro-optic beam steering, moving parts that can be a significant disturbing factor for precise thrusters can be avoided in this concept. A thrust balance based on a torsional pendulum has been constructed for measurements in vacuum. Sub-µN thrust levels have been measured in tests with a calibrated voice coil. In addition modification of the sample surface after ablation is determined by using a white light interferometry profiler. Moreover, divergence and velocity distribution of ions in the ablation plume are investigated by Faraday cup measurements. These diagnostics provide information on the influence of laser, surface and material parameters which are important figures of merit for the evaluation and optimization of laser ablative microthrusters.

Item URL in elib:https://elib.dlr.de/83151/
Document Type:Conference or Workshop Item (Speech)
Title:Investigation of Laser-Ablative Micropropulsion as an Alternative Thruster Concept for Precise Satellite Attitude and Orbit Control
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Karg, Stephaniestephanie.karg (at) dlr.deUNSPECIFIED
Fedotov, VitalijUNSPECIFIEDUNSPECIFIED
Date:26 April 2013
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Lageregelung, Mikroantrieb, Laser Ablation, Impulsbit, Strahlsteuerung, Profilometrie, Plasmadiagnostik, Schubmessung
Event Title:13th ONERA-DLR Aerospace Symposium
Event Location:Palaiseau, Frankreich
Event Type:Other
Event Dates:27. - 29. Mai 2013
Organizer:ONERA /DLR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology (old)
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics > Studies and Concepts
Deposited By: Karg, Stephanie
Deposited On:09 Aug 2013 11:50
Last Modified:08 May 2014 23:24

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.