Theoretical and Numerical Studies of Dynamic Scaling of a Six-Degree-of-Freedom Laser Propulsion Vehicle
Joint Authors
Takahashi, Masayuki
Ohnishi, Naofumi
Source
International Journal of Aerospace Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-08
Country of Publication
Egypt
No. of Pages
12
Abstract EN
To estimate the flight reactions of a full-scale vehicle from reduced-scale tests, we constructed a scaling theory for the vehicle size, input energy, moment of inertia, and pulse frequency needed to maintain dynamic equivalence between a laboratory-scale and full-scale launch of a laser propulsion vehicle.
The dynamic scaling law for a single pulse was constructed using translational and angular equations of motion.
The analytical scaling was confirmed for a single-pulse incident using a fluid-orbit coupling simulator for the interaction between the blast wave and the vehicle.
Motion equivalence was maintained for multiple pulses by adjusting the repetition frequency of the pulse incident to correct for the effect of aerodynamic drag during the free flight of the pulse-to-pulse interval.
The flight of a full-scale vehicle can be estimated for single- and multiple-pulse operations from the flight data for a small-scale vehicle using the proposed scaling theory, which provides correlations between the characteristics of small-scale and large-scale flight systems.
Small-scale tests were shown to be useful in estimating the flight of a full-scale vehicle using dynamic scaling theory.
American Psychological Association (APA)
Takahashi, Masayuki& Ohnishi, Naofumi. 2015. Theoretical and Numerical Studies of Dynamic Scaling of a Six-Degree-of-Freedom Laser Propulsion Vehicle. International Journal of Aerospace Engineering،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1064546
Modern Language Association (MLA)
Takahashi, Masayuki& Ohnishi, Naofumi. Theoretical and Numerical Studies of Dynamic Scaling of a Six-Degree-of-Freedom Laser Propulsion Vehicle. International Journal of Aerospace Engineering No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1064546
American Medical Association (AMA)
Takahashi, Masayuki& Ohnishi, Naofumi. Theoretical and Numerical Studies of Dynamic Scaling of a Six-Degree-of-Freedom Laser Propulsion Vehicle. International Journal of Aerospace Engineering. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1064546
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1064546