Abstract: A novel configuration of the wind-driven spherical robot with multiple shapes is proposed, which can realize the multiple movement modes of rolling, bouncing, and flying by adjusting its external shape. The constraints, ...

Abstract: Offset-feed elliptical aperture reflectors have better mechanical and electrical performance than circular aperture reflectors and are an inevitable trend for the future development of high-precision space-borne antennas. ...

Abstract: Offset-feed elliptical aperture reflectors have better mechanical and electrical performance than circular aperture reflectors and are an inevitable trend for the future development of high-precision space-borne antennas. ...

Abstract: Negative stiffness is a unique mechanical phenomenon that arises during the elastic snap-through process after structural instability. It promotes motion, making it particularly advantageous in various specific applications ...

Abstract: In this paper, an alternative approach was developed for the form-finding of cable-membrane structures. The prestress of a triangular finite element was firstly equivalent to the axial force densities and uniform vertical ...

Abstract: A pretension design method based on the projection principle is proposed for space deployable mesh reflector antennas. First, the equilibrium tension of the plane cable net structure is obtained by a force equilibrium ...

Abstract: The umbrella cable-net structure is one of the most popular forms for deployable space reflectors and has been successfully applied to many in-orbit deployable antennas. The umbrella ribs only provide open support for the ...

Abstract: Cable length adjustment is a critical step to minimize the shape error of cable-net reflectors. The adjustment requires tedious repetitive work, but the surface accuracy is often unsatisfactory because of inevitable operating ...