Accession Number : AD0164344

Title :   Method of Mounting a Nozzle Insert.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Olcott,Eugene L.

Report Date : 03 OCT 1972

Pagination or Media Count : 4

Abstract : The patent describes a method of mounting, in a composite-type rocket nozzle, a nozzle insert which is substantially annular in configuration and which has four surfaces, three of which are external and uncoated, and the fourth of which is internal and is coated with pyrolytic graphite. The method includes the steps of coating the insert on the three uncoated external surfaces with a thin layer of silicone grease, coating two of the external surfaces with a layer of a filled epoxy cement on the thin layer of silicone grease, coating the third external surface with a layer of silicone rubber on the thin layer of silicone grease, and placing the insert in its proper position in the composite-type rocket nozzle. This method of mounting promotes the service life of the insert by eliminating the application of tensile stresses to the insert.

Descriptors :   *Rocket nozzles, *Nozzle inserts, *Bonding, *Patents, Pyrolytic graphite, Epoxy coatings, Silicone coatings

Subject Categories : Adhesives, Seals and Binders
      Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE