Three-dimensional numerical analysis for posture stability of laser propulsion vehicle

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We have developed a three-dimensional hydrodynamics code coupling equation of motion of a rigid body for analyzing posture stability of laser propulsion vehicle through numerical simulations of flowfield interacting with unsteady motion of the vehicle. Asymmetric energy distribution is initially added around the focal spot (ring) in order to examine posture stability against an asymmetric blast wave resulting from a laser offset for a lightcraft-type vehicle. The vehicle moves to cancel out the offset from initial offset. However, the Euler angle grows and never returns to zero in a time scale of laser pulse. Also, we found that the vehicle moves to cancel tipping angle when the laser is irradiated to the vehicle with initial tipping angle over the wide angle range, through the vehicle cannot get sufficient restoring force in particular angle, and the tipping angle does not decrease from the initial value for that case.

Original languageEnglish
Title of host publicationBeamed Energy Propulsion - Seventh International Symposium
Pages132-141
Number of pages10
DOIs
Publication statusPublished - 2011 Nov 28
Event7th International Symposium on Beamed Energy Propulsion - Ludwigsburg, Germany
Duration: 2011 Apr 102011 Apr 14

Publication series

NameAIP Conference Proceedings
Volume1402
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other7th International Symposium on Beamed Energy Propulsion
CountryGermany
CityLudwigsburg
Period11/4/1011/4/14

Keywords

  • Beam Riding Performance
  • Laser Propulsion
  • Posture Stability

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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