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High speed analysis of free flights with a parabolic thruster

Scharring, Stefan and Eckel, Hans-Albert and Röser, Hans-Peter (2009) High speed analysis of free flights with a parabolic thruster. In: AIP Conference Proceedings, 1230, pp. 77-88. American Institute of Physics, Melville, NY. 6th International Symposium on Beamed Energy Propulsion, 01.-05. Nov. 2009, Scottsdale, Arizona, USA. ISBN 978-0-7354-0774-9.

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A laser-based range finder with high temporal resolution, synchronized with the laser burst, is employed for fast on-site analysis of pulsed free flights. Additional high speed recordings from two different angles of view allow for full 3D-reconstruction of the trajectory and calibration of the range finder data. This reveals the whole dynamics of the flyer including the lateral and angular impulse coupling components as well as information on the detonation process. The employment of an ignition pin enhances the reproducibility of the momentum coupling due to a more reliable plasma ignition during the flight. The impact of initial lateral offset is studied and shows beam-riding properties of the parabolic craft within a small range. Back-driving forces are derived and compared with the theoretical model. The flight stability is evaluated with respect to the minimization and compensation of the lateral and angular momentum in a hovering experiment. Stable laser acceleration ranges up to 3 m altitude. Ballistic free flights close to the laboratory ceiling at 7.8 m are reported.

Item URL in elib:https://elib.dlr.de/60732/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:High speed analysis of free flights with a parabolic thruster
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Scharring, Stefanstefan.scharring (at) dlr.deUNSPECIFIED
Eckel, Hans-Alberthans-albert.eckel (at) dlr.deUNSPECIFIED
Röser, Hans-PeterInstitut für Raumfahrtsysteme, Universität StuttgartUNSPECIFIED
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 77-88
EditorsEmailEditor's ORCID iD
Phipps, ClaudePhotonic Associates, LLCUNSPECIFIED
Komurasaki, KimiyaThe University of TokyoUNSPECIFIED
Sinko, JohnOberlinUNSPECIFIED
Publisher:American Institute of Physics, Melville, NY
Series Name:Beamed Energy Propulsion
Keywords:Laser propulsion, Free flight experiments, Lightcraft, Repetition rate, Impulse coupling coefficient, High speed analysis.
Event Title:6th International Symposium on Beamed Energy Propulsion
Event Location:Scottsdale, Arizona, USA
Event Type:international Conference
Event Dates:01.-05. Nov. 2009
Organizer:American Institute of Beamed Energy Propulsion
HGF - Research field:Aeronautics, Space and Transport (old)
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
Deposited By: Scharring, Stefan
Deposited On:13 Nov 2009 09:48
Last Modified:28 Jul 2010 10:42

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