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On the stability of a space vehicle riding on an intense laser beam.
Math. Meth. Appl. Sci. 40, 1346-1354 (2017)
The Breakthrough Starshot Initiative is suggested to develop the concept of propelling a nanoscale spacecraft by the radiation pressure of an intense laser beam. In this project, the nanocraft is a gram-scale robotic spacecraft comprising two main parts: StarChip and Lightsail. To achieve the goal of the project, it is necessary to solve a number of scientific problems. One of these tasks is to make sure that the nanocraft position and orientation inside the intense laser beam column are stable. The nanocraft driven by intense laser beam pressure acting on its Lightsail is sensitive to the torques and lateral forces reacting on the surface of the sail. These forces influence the orientation and lateral displacement of the spacecraft, thus affecting its dynamics. If unstable, the nanocraft might be expelled from the area of laser beam. In choosing the models for nanocraft stability studies, we are using several assumptions: (i) configuration of nanocraft is treated as a rigid body; (ii) flat or concave shape of circular sail; and (iii) mirror reflection of laser beam from surface of the Lightsail. We found conditions of position stability for spherical and conical shapes of the sail. The simplest stable configurations require the StarChip to be removed from the sail to make the distance to the center of mass of the nanocraft bigger than the curvature radius of the sail. Stability criteria do not require the spinning of the nanocraft. A flat sail is never stable.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Breakthrough Starshot Initiative ; Lightsail ; Nanocraft ; Stability
Language
english
Publication Year
2017
Prepublished in Year
2016
HGF-reported in Year
2016
ISSN (print) / ISBN
0170-4214
e-ISSN
1099-1476
Quellenangaben
Volume: 40,
Issue: 4,
Pages: 1346-1354
Publisher
Wiley
Reviewing status
Peer reviewed
Institute(s)
Institute of Computational Biology (ICB)
POF-Topic(s)
30205 - Bioengineering and Digital Health
Research field(s)
Enabling and Novel Technologies
PSP Element(s)
G-503800-001
DOI
10.1002/mma.4282
Scopus ID
85007048970
Erfassungsdatum
2016-12-31