Extensible mast, production method therefor, photovoltaic paddle, and outer space structure
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United States of America
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Feb 18, 2025
Grant Date -
Aug 10, 2023
app pub date -
Aug 3, 2020
filing date -
Aug 3, 2020
priority date (Note) -
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Abstract
An extensible mast according to the present disclosure includes a first fiber layer made of a fiber-reinforced plastic, a second fiber layer that is arranged in contact with the first fiber layer and made of a fiber-reinforced plastic having a thermal expansion coefficient in a longitudinal direction larger than a thermal expansion coefficient in the longitudinal direction of the fiber-reinforced plastic applied to the first fiber layer, and an electric heating wire arranged on the second fiber layer. The number of times of overlapping of the electric heating wire in different layers when the first fiber layer, the second fiber layer, and the electric heating wire are wound and retracted in a roll shape is minimized. Thus, the elastic restoring force of the extensible mast can be maintained while an increase in weight and volume is suppressed.
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