Unfoldable satellite-borne synthetic aperture radar antenna based on shape memory polymer composite material
A technology of synthetic aperture radar and memory polymer, which is applied in the structural connection of antenna grounding switch, antenna support/installation device, etc., can solve the problems of radar antennas limiting the life of artificial satellites and the number of satellites carried, so as to increase the number of carried and reduce the overall The effect of machine quality
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specific Embodiment approach 1
[0027] Specific implementation mode one: combine Figure 1 to Figure 16 Describe this embodiment, the expandable spaceborne synthetic aperture radar antenna based on shape memory polymer composite material described in this embodiment includes a plurality of upper trusses 4, a base 5 and several antenna units, and a plurality of upper trusses 4 are installed side by side on the base in parallel 5, each upper truss 4 is provided with a plurality of antenna units along its length direction, and several antenna units are arranged in a matrix to form a rectangular board.
[0028] Both the upper truss 4 and the base 5 are made of composite materials.
specific Embodiment approach 2
[0029] Specific implementation mode two: combination Figure 1 to Figure 16 To illustrate this embodiment, each antenna unit of the expandable spaceborne synthetic aperture radar antenna based on shape memory polymer composite material in this embodiment includes an expandable cell 1, a flexible film 2, and high-frequency receiving / transmitting electronic equipment 3 and the lower slider 6 of the expandable cell, the lower end of the expandable cell 1 is slidingly connected to the upper surface of the upper truss 4 through the lower slider 6 of the expandable cell, and the flexible film 2 is attached to the upper surface of the expandable cell 1 On the end face, high-frequency receiving / transmitting electronics 3 are mounted on the upper surface of the flexible membrane 2 .
[0030] In this embodiment, the expandable cell 1, the flexible film 2, and the high-frequency receiving / transmitting electronic equipment 3 are bonded together by silicon rubber. The flexible film 2 is a...
specific Embodiment approach 3
[0032] Specific implementation mode three: combination Figure 1 to Figure 16 To illustrate this embodiment, the expandable cell 1 of the expandable spaceborne synthetic aperture radar antenna based on shape memory polymer composite material in this embodiment is composed of an inner bracket 1-1 and an outer bracket 1-2, and the inner bracket 1-1 It is a truncated cone with four inner legs 1-1-1 whose outer contour gradually tapers from top to bottom. The outer bracket 1-2 is composed of four outer legs 1-2-1. Tapered frustum from top to bottom, the outer support 1-2 is set on the inner support 1-1, the inner support leg 1-1-1 and the outer support leg 1-2-1 are both shape memory polymer composite materials maded.
[0033] The resin of the shape memory polymer composite material is epoxy, cyanate or polyimide with shape memory effect; the reinforcing phase of the composite material is carbon fiber, carbon nanotube, carbon nanotube grafted carbon fiber, chopped fiber, carbon ...
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