A novel design of large full-steerable reflector antenna
2017
Aiming at the problem of self-weight and cost of 110 m large full-steerable
reflector antenna, a new design scheme is proposed. Compared with
the conventional scheme, the self-weight, drive power and cost can
be reduced by 1/2, 2/3 and 1 orders of magnitude. Firstly, an ultra-light
prestressed cable-truss structure is proposed to replace the traditional
rigid heavy rigid truss structure. Then, a novel parallel servo mechanism
is proposed to replace the conventional Az - El scanning mechanism. Furthermore, an optimization model
is established based on the modularized design. Finally, the new scheme
is applied to the numerical examples and a practical antenna with
a diameter of 26 m, and the results verify the feasible and effective
of the scheme and the method. In addition, the design scheme is extensible
and can be applied to the design of large structures and devices such
as antennas, weapon mounts and large solar panels in other land,
sea, air and space fields.
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