Abstract: A luminescent screen consisting of one self-supporting monocrystalline body and having a luminescent surface layer with V-shaped grooves. Such screens may be exposed to radiation having a larger energy than was usual so far with phosphor screens and have a very large luminous efficiency. In addition the resolving power is very large since there are no particles with limiting dimensions. Such screens may be used for displaying very bright pictures suitable for projection on a projection screen.

Abstract: A rotor support structure for a gas turbine engine comprises a rolling element bearing adapted to carry the rotor, a structurally strong ring adapted to carry the rolling element bearing, and two pairs of supporting struts for the ring, extending substantially tangentially from the ring, each pair joining at a mounting, the two mountings being diametrically opposed with respect to the ring.

Abstract: A method of growing a monocrystalline bismuth rare earth iron garnet material from a melt in which a flux containing bismuth oxide and an alkali metal oxide is employed.

Abstract: Bearing material, such as an aluminum alloy, is applied and bonded to the support surface by heating the surface to 500 to 700 degrees Fahrenheit, applying the bearing material in sheet form to the surface at one edge thereof, and spreading the material across the surface by moving a zone of pressure application to the bearing material from one edge of the surface to an opposed edge so as to reduce the thickness of the bearing material and to provide a flow which continually brings fresh previously unexposed bearing material from the interior of the sheet so as to effect a molecular bond. Typical applications are to sleeve type bearings or bushings, and a preferred use of the invention is the application of bearing material to connecting rods.