Materials Problems Associated With Uncooled Rocket Nozzles

Abstract

Abstract A brief discussion is given of thermal shock, erosion, and catastrophic corrosion problems connected with uncooled rocket nozzles used with solid fuels. This is followed by a description of materials and methods used to meet these problems. A small oxygen-hydrogen rocket motor was used to screen materials. Slip cast fused silica was used as a base material and erosion and corrosion resistance was provided in the throat area with arc-sprayed coatings or shells. Fabrication and evaluation techniques used are described as are forming methods and test results. 7.2