Abstract: A re-entry vehicle that includes three detachable modular components which anticipate total re-useability. Modularization of the composite re-entry vehicle offers great flexibility in re-arranging the various modules to suit a particular mission. The three module components include a crew module, principally serving as a crew cabin, and attached thereto is a modular heat shield or re-entry module which principally provides for thermal protection of the cabin module during re-entry. Propulsion for the cabin module to achieve a particular re-entry orbit is provided by a versatile service stage which becomes detached from the other two modules upon attainment of a desired re-entry trajectory. When used in conjunction with a Space Station, the versatile service stage may be propelled back to the Space Station for refueling and re-use.

Abstract: A shading device capable of compactly storing a flexible shade on a biased, window-shade type spring roller and controlled to deliver the shade selectively to either its operative shading or compact storage orientation.

Abstract: A construction technique is disclosed for facilitating the rapid assembly of large structures at remote sites, both terrestrial and extra terrestrial, comprising joining modular sub-assemblies embodied as triangular trusses in a limited number of standardized interconnecting modes to form final structures, the construction technique utilizing modular interconnecting members for facilitating the rapid joinder of the sub-assemblies in one or more of these modes.

Abstract: A self-contained sun sensitive window made up of liquid nematic crystals sandwiched between two transparent conductors is powered directly by a solar cell. An increase in light intensity upon the solar cell reduces the transparency of the window, resulting in a constant intensity behind the window.