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Stabilization and steering of a parabolic laser thermal thruster with an ignition device

Scharring, Stefan and Hoffmann, Daniela and Eckel, Hans-Albert and Röser, Hans-Peter (2009) Stabilization and steering of a parabolic laser thermal thruster with an ignition device. Acta Astronautica, 65 (11-12), pp. 1599-1615. Elsevier Ltd.. DOI: 10.1016/j.actaastro.2009.04.007. ISSN 0094-5765.

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1016/j.actaastro.2009.04.007

Abstract

High energy pulses of a CO2 laser are focused in a parabolic mirror yielding to a laser-supported detonation. The generated thrust acting on the reflector as a bell nozzle is studied in multiple pulse free flight experiments with respect to axial, lateral and angular momentum coupling. The employment of an ignition pin on the reflector’s axis of symmetry lowering the ignition threshold by several orders of magnitude is found to provide for a reproducible detonation process. The axial momentum coupling of each pulse is analyzed with respect to initial lateral offset and tilt during the flight. Highspeed analyses of recorded flights indicate that lateral momentum components occur re-centering the thruster on the beam. Thrust vector steering can be realized by tilt of the ignition pin inside the thruster, thus shifting the detonation. A design model of a laser-driven rocket including a remotely accessible steering gear was developed and tested successfully.

Document Type:Article
Title:Stabilization and steering of a parabolic laser thermal thruster with an ignition device
Authors:
AuthorsInstitution or Email of Authors
Scharring, Stefanstefan.scharring@dlr.de
Hoffmann, Danieladaniela.hoffmann@de.bosch.com
Eckel, Hans-Alberthans-albert.eckel@dlr.de
Röser, Hans-Peterroeser@irs.uni-stuttgart.de
Date:20 May 2009
Journal or Publication Title:Acta Astronautica
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:65
DOI:10.1016/j.actaastro.2009.04.007
Page Range:pp. 1599-1615
Publisher:Elsevier Ltd.
Series Name:Elsevier Engineering
ISSN:0094-5765
Status:Published
Keywords:Laser propulsion; Lightcraft; Parabolic thruster; Beamriding; Steering; Impulse coupling
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Stefan Scharring
Deposited On:14 Oct 2009 10:09
Last Modified:26 Mar 2013 13:10

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