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The MICROLAS concept: Precise thrust generation in the µN range by laser ablation

Scharring, Stefan and Lorbeer, Raoul-Amadeus and Karg, Stephanie and Eckel, Hans-Albert (2015) The MICROLAS concept: Precise thrust generation in the µN range by laser ablation. 8th Pico- and Nano-Satellite Workshop on "Technologies for Small Satellite Research", 15.-16. Sept. 2015, Würzburg.

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Official URL: http://www7.informatik.uni-wuerzburg.de/conferences/pina2015/

Abstract

Experimental work and hydrodynamic simulations on the MICROLAS concept of a pulsed laser-ablative microthruster are presented. Impulse bit generation in the nNs range is affected by laser parameters like wavelength, pulse duration, beam incidence angle and polarization as well as the optical and thermal properties of the chosen propellant material. A parameter study for the optimum working point is carried out yielding two different operation modes with respect to laser pulse duration. Thrust in µN range is generated by repetitive laser ablation events under fixed and well-defined process parameters allowing for thrust level control by the laser pulse repetition rate through several orders of magnitude. Thrust noise, e.g., by mechanical motion for continuous propellant supply, can be minimized since laser beam can access every part of the propellant surface without any mechanical motion. Electro-optical beam-steering constitutes a promising technology for an inertia-free setup enabling high precision thrust generation.

Item URL in elib:https://elib.dlr.de/99641/
Document Type:Conference or Workshop Item (Speech)
Title:The MICROLAS concept: Precise thrust generation in the µN range by laser ablation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Scharring, Stefanstefan.scharring (at) dlr.deUNSPECIFIED
Lorbeer, Raoul-Amadeusraoul.lorbeer (at) dlr.deUNSPECIFIED
Karg, Stephaniestephanie.karg (at) dlr.deUNSPECIFIED
Eckel, Hans-AlbertHans-Albert.Eckel (at) dlr.deUNSPECIFIED
Date:September 2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Mikroantrieb, Laser Ablation, gepulste Antriebe, Lageregelung, Laserparameter, Impulsbit, Schubrauschen, trägheitsfreier Betrieb, hochpräziser und rauscharmer Antrieb
Event Title:8th Pico- and Nano-Satellite Workshop on "Technologies for Small Satellite Research"
Event Location:Würzburg
Event Type:international Conference
Event Dates:15.-16. Sept. 2015
Organizer:Lehrstuhl für Informatik VII, Universität Würzburg
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
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: Scharring, Stefan
Deposited On:23 Nov 2015 16:00
Last Modified:31 Jul 2019 19:56

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