Omnidirectional flexible joint for rocket nozzles (USH0001381)
Original Publication Date: 1994-Dec-06
Included in the Prior Art Database: 2006-Mar-31
US Statutory Invention Registration (SIRs)
Related DocumentsPatent/Patent Application:
An improved multiple-layered omnidirectional flexible joint disposed to flexibly connect between a convex spherical ball surface associated with a rocket motor nozzle and a concave spherical cup surface associated with a rocket motor case, the space between curved mounting surfaces being filled by overlapping spherically concentric layers constructed in an alternating manner of relatively rigid and relatively resilient materials interleaved and bonded to one another. The rigid layers are made of glass-fiber-reinforced epoxy-resin composite material, and extend outward beyond the edges of the resilient layers, so as to protrude toward the hot environment within the rocket motor case. The protruding edges of the glass-epoxy composite material layers tend to melt together, and thereafter protect the resilient layers from direct exposure to the intense thermal environment within the rocket motor case.