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Method for Thermal Stabilization of Communications Satellites

A technology for communication satellites and satellites, applied in the field of communication satellites, can solve problems such as increasing costs and increasing the weight of satellites, and achieves the effect of reducing weight and cost

Active Publication Date: 2021-02-26
WORLDVU SATELLITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] These solutions and others available in the state of the art have significant disadvantages of increased cost, increased satellite weight and suppressed performance

Method used

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  • Method for Thermal Stabilization of Communications Satellites
  • Method for Thermal Stabilization of Communications Satellites
  • Method for Thermal Stabilization of Communications Satellites

Examples

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Embodiment Construction

[0033] image 3 A satellite 300 suitable for some embodiments of the invention is shown. The satellite is optimally used in LEO orbit. The satellite includes solar panels 310 and 320 for generating electricity from sunlight. The solar panel is hinged, such as at hinge 340, and the motor is used to orient the solar panel as desired for exposing the panel to sunlight. The satellite also includes two radio antennas 350 and 360 which are also on the hinged mount and can be oriented as desired to target a particular location on the Earth's surface. The satellite also includes an array of sixteen communication antennas, wherein these antennas are rigidly attached to the body 380 of the satellite via support web panels. Sixteen antennas are shown as equivalent round cans, one of which is labeled 380-1.

[0034] Note that the satellites are shown "inverted". When in orbit, sixteen antennas are aimed at the Earth's surface. this is in Figure 4 is shown in , where each of the si...

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PUM

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Abstract

The present invention relates to a method for thermally stabilizing a communication satellite in orbit around the Earth, which method relies on the discrete rotational symmetry of the satellite's antenna beam pattern. Taking advantage of the symmetry, the orientation of the satellite changes from time to time by rotating the satellite through the symmetric angles of the rotational symmetry. Due to the symmetry, the beam pattern does not change after the rotation; but because the rotation angle is less than 360°, different sides of the satellite are exposed to sunlight. The use of different heat radiators and heat shields on different sides of the satellite means that the thermal budget of the satellite is different after the rotation. By judiciously applying rotation as needed, it is possible to achieve efficient control of the thermal budget of the satellite as the orbital orientation relative to the sun evolves over time.

Description

technical field [0001] The present invention relates generally to communication satellites and, more particularly, to thermal management of communication satellites. Background technique [0002] Since the launch of the Telesat satellite more than fifty years ago, many artificial satellites have been launched into various earth orbits to serve as communication relay stations. Such communication satellites have achieved enormous improvements in capability and cost over the years, providing in many cases communication connectivity to regions of the Earth not well served by other communication technologies. [0003] The orbits of communication satellites are generally chosen to maximize the communication efficiency of the satellites. For example, communication satellites may be placed in low earth orbit (LEO) to enable short delays in radio communications. [0004] figure 1 Polar LEO orbits of communication satellites are shown. figure 1 The outline of planet Earth 110 is s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/10B64G1/24B64G1/50B64G1/58
CPCB64G1/242B64G1/425B64G1/50B64G1/66B64G1/1007B64G1/503B64G1/58
Inventor A·D·史密斯A·奥斯奇基D·W·菲尔德J·格罗斯曼
Owner WORLDVU SATELLITES