Download Spacecraft Power Technologies by Anthony K.Hyder, Ronald L.Wiley, G.Halpert, Donna Jones PDF

By Anthony K.Hyder, Ronald L.Wiley, G.Halpert, Donna Jones Flood, S.Sabripour

Whereas there are various books and different literature on spacecraft electrical energy structures, there aren't any finished unmarried references describing the permitting applied sciences utilized in spacecraft energy structures. This e-book fills that desire. instead of describing particular strength structures utilized in a variety of area flights, Spacecraft strength applied sciences info 3 of the main everyday different types of power resources utilized in spacecraft energy systems—solar, chemical, and nuclear resources.

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There are several excellent comprehensive texts on the space environment (Hastings and Garrett, 1996; Tribble, 1995; DeWitt, Duston, and Hyder, 1993) which provide many details not discussed here. In this chapter, we intend only to provide an overview of the near-Earth space environment with emphasis on those elements which may affect the performance of the spacecraft's electrical power system. The environment consists of many interacting parts, some of which dominate in one region or another. There arises then the somewhat arbitrary decision of how to present the discussion of the environment and its interactions with the spacecraft.

Orbital considerations The orbit of the satellite is an important factor in determining the parameters of the electrical power system and the thermal management system. 3 Interactions of the Environment with High-Electric-Field Components characteristics of several common near-Earth orbits and the impact of orbit selection on the design of the spacecraft power system. 2,1 Orbital elements Orbits are characterized by several parameters which uniquely define the satellite motion. Rather than attempt any comprehensive survey of orbital mechanics, we present a brief review of a number of the key parameters which will be useful in the discussions that follow.

The sun The Earth's orbit around the Sun is an ellipse whose plane, the ecliptic plane, is tilted with respect to the Earth's equatorial plane. 52 x 108 km). In spite of these large distances, the power output of the Sun is so great that solar energy reaching the Earth is the defining factor for our local space environment. A satellite in orbit around the Earth will be affected directly by radiation coming from the Sun and indirectly through the many ways in which the Sun modifies the environment through which the satellite must pass.

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