To suppress an error in shape of a reflector surface due to an error in the end position of an expansion operation.SOLUTION: An expandable reflector 100 includes: a support structure section 12 for forming a concave support surface in an expanded state; and a reflector section that is supported on the support surface and that forms a reflector surface. The support structure section 12 includes: a plurality of main support bodies 20 that are elongated along radiation directions from a reference axis 11 at the center; and a sub-support body 30 that is constructed between neighboring main support bodies 20. At least one of the plurality of main support bodies 20 is pivotally supported on the reference axis 11, and an angle relative to a neighboring main support body 20 can be increased and decreased about the reference axis 11 serving as an axial center. As a result of the angle between the main support body 20 pivotally supported by the reference axis 11 and the neighboring main support body 20 being increased, the sub-support body 30 expands in a circumferential direction so as to establish a lattice structure for defining a plurality of facets 37. In an expanded state, the support surface is formed by the plurality of main support bodies 20 and the sub-support body 30.SELECTED DRAWING: Figure 14

    【課題】展開動作の終了位置の誤差に起因するリフレクタ面の形状の誤差を抑制する。【解決手段】展開式リフレクタ100は、展開状態において凹面状の支持面を形成する支持構造部12と、支持面に支持されてリフレクタ面を形成するリフレクタ部を備え、支持構造部12は、基準軸11を中心とする放射方向に長尺な複数のメイン支持体20と、隣り合うメイン支持体20どうしの間に架設されているサブ支持体30を含み、複数のメイン支持体20の少なくとも1つは、基準軸11に軸支されており、隣のメイン支持体20との間の角度が基準軸11を軸中心として開閉可能となっており、基準軸11に軸支されているメイン支持体20と隣のメイン支持体20との間の角度が開くことにより、サブ支持体30が周方向に展開して複数のファセット37を画定する格子構造となり、展開状態において、複数のメイン支持体20とサブ支持体30とにより支持面が形成される。【選択図】図14


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    Title :

    EXPANDABLE REFLECTOR AND EXPANSION STRUCTURE FOR EXPANDABLE REFLECTOR


    Additional title:

    展開式リフレクタ及び展開式リフレクタ用展開構造物


    Contributors:

    Publication date :

    2019-11-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B64G Raumfahrt , COSMONAUTICS / H01Q Antennen , ANTENNAS, i.e. RADIO AERIALS



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