Abstract: A compliant hinge for deployable membrane-like structures and other applications is provided. The compliant hinge generally includes a flexible intermediate portion having one or more enclosed contours connected by inner longitudinal segments along a longitudinal axis of symmetry. The enclosed contours are resiliently deformable in response to an in-plane load, including tension and shear forces. The compliant hinge allows for rotation, bending, and extension, and can interconnect rigid panels in tensioned precision structures and other applications.

Abstract: A compliant hinge for deployable membrane-like structures and other applications is provided. The compliant hinge generally includes a flexible intermediate portion having one or more enclosed contours connected by inner longitudinal segments along a longitudinal axis of symmetry. The enclosed contours are resiliently deformable in response to an in-plane load, including tension and shear forces. The compliant hinge allows for rotation, bending, and extension, and can interconnect rigid panels in tensioned precision structures and other applications.

Abstract: A reflector useful for communications, radar and sensing application in space and on earth includes thin shell gores emanating from a geometric center of the reflector at its hub. Gores are provided in a spiraled pattern and are in elastic connection to said hub and wrapped around their point of convergence at the hub when the reflector is stowed. The gores emanate from the geometric center of the reflector hub at their elastic connection to the hub when they are deployed and operational as a reflector with a point of convergence to promote operation as a reflector. Thin shell gores can have an inner perimeter and outer perimeter, can be provided in a spiraled pattern, and can be interlocked at their outer perimeter, or in-between their inner and outer perimeter, while also remaining in elastic connection at their inner perimeter to said hub.

Abstract: Flexible and resilient masts are connected by flexible and resilient inner and outer spars, and flexible cords radially connect the spars. A flexible material is attached to the cords. The assembly is wrapped around a rotatable cylindrical drum in the structure's stored configuration. Each mast is flexible only about an axis lying parallel to the axis of rotation of the drum, and is otherwise rigid. Each mast is linear when extended and has a bending stress when deformed into a non-linear configuration, such as when wrapped around the drum. When the structure is in its stored configuration, a restraining device opposes the bending stress and another prevents the drum from rotating. Upon disengagement of the restraining devices, the stored bending strain energy forces the drum to rotate and the masts to extend into the deployed configuration and thereby unfurl the flexible material.

Abstract: A reflector useful for communications, radar and sensing application in space and on earth includes thin shell gores emanating from a geometric center of the reflector at its hub. Gores are provided in a spiraled pattern and are in elastic connection to said hub and wrapped around their point of convergence at the hub when the reflector is stowed. The gores emanate from the geometric center of the reflector hub at their elastic connection to the hub when they are deployed and operational as a reflector with a point of convergence to promote operation as a reflector. Thin shell gores can have an inner perimeter and outer perimeter, can be provided in a spiraled pattern, and can be interlocked at their outer perimeter, or in-between their inner and outer perimeter, while also remaining in elastic connection at their inner perimeter to said hub.