Abstract: In a gas turbine engine, in a wall aperture of a 2-D variable area gas turbine exhaust nozzle, at least two members are rotatably and concentrically mounted in such aperture, substantially flush with the wall and in the path of hot exhaust gases flowing thereover, wherein an improvement is provided such that a) a heat shield is mounted on the wall downstream of the two concentric members b) a second liner is mounted on the inner concentric member and spaced thereabove and extends downstream over the outer concentric member, which is recessed relative to the second liner, which liner then overlaps the first liner, c) a third liner is mounted on the wall, upstream of the concentric members and spaced thereabove and extends downstream over the outer concentric member (to effectively submerge same) and overlaps the second liner, the liners being mounted in shingle-style overlap over the members including over the recessed outer concentric member, to thermally shield same.

Abstract: Apparatus for bending flat thermoplastic laminates into structural shapes such as angles, channels, Z sections, J sections and I sections. In order to bend the laminate into the desired shape by appropriate tooling, heat is applied in a localized manner only to the area that is to be bent. The application of heat is sufficient to heat the laminate to its softening temperature in the bend area, and the plies of the laminate can thus slip in the bend area only as bending force is applied so that the bend can be made without the need to heat the entire laminate to the softening temperature.

Abstract: An apparatus and a method for forming a corrugated sheet from a flat pre-laminated thermoplastic sheet. The flat sheet received between a pair of heated corrugated metal tool sheets with the tool sheets pulled between a pair of stationary tool press plates for forming and cooling the flat sheet into a corrugated sheet.