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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Collecting solar power by formation flying systems around a geostationary point

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Salazar, F. J. T. [1] ; Winter, O. C. [1] ; McInnes, C. R. [2]
Total Authors: 3
[1] UNESP, Grp Dinam Orbital & Planetol, BR-12516410 Guaratingueta, SP - Brazil
[2] Univ Glasgow, Sch Engn, Glasgow G12 8QQ, Lanark - Scotland
Total Affiliations: 2
Document type: Journal article
Source: COMPUTATIONAL & APPLIED MATHEMATICS; v. 37, n. 1, SI, p. 84-95, DEC 2018.
Web of Science Citations: 1

Terrestrial solar power is severely limited by the diurnal day-night cycle. To overcome these limitations, a Solar Power Satellite (SPS) system, consisting of a space mirror and a microwave energy generator-transmitter in formation, is presented. The microwave transmitting satellite (MTS) is placed on a planar orbit about a geostationary point (GEO point) in the Earth's equatorial plane, and the space mirror uses the solar pressure to achieve orbits about GEO point, separated from the planar orbit, and reflecting the sunlight to the MTS, which will transmit energy to an Earth-receiving antenna. Previous studies have shown the existence of a family of displaced periodic orbits above or below the Earth's equatorial plane. In these studies, the sun-line direction is assumed to be in the Earth's equatorial plane (equinoxes), and at 23.5 degrees below or above the Earth's equatorial plane (solstices), i.e. depending on the season, the sun-line moves in the Earth's equatorial plane and above or below the Earth's equatorial plane. In this work, the position of the Sun is approximated by a rectangular equatorial coordinates, assuming a mean inclination of Earth's equator with respect to the ecliptic equal to 23.5 degrees. It is shown that a linear approximation of the motion about the GEO point yields bounded orbits for the SPS system in the Earth-satellite two-body problem, taking into account the effects of solar radiation pressure. The space mirror orientation satisfies the law of reflection to redirect the sunlight to the MTS. Additionally, a MTS on a common geostationary orbit (GEO) has been also considered to reduce the relative distance in the formation flying Solar Power Satellite (FF-SPS). (AU)

FAPESP's process: 13/03233-6 - Dynamics, control and reconfiguration of satellite formation flight around Lagrangian points
Grantee:Francisco Javier Tipán Salazar
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/08171-3 - Orbital dynamics of minor bodies
Grantee:Othon Cabo Winter
Support type: Research Projects - Thematic Grants