Method of manufacturing a high heat flux regenerative circuit, in particular for the combustion chamber of a rocket engine

摘要

A regenerative circuit structure is built up by implementing the following steps in particular:;an intermediate layer is made on a support core representing the inner profile of the structure;;a series of channels regularly distributed around the core is made with the channels opening to face the intermediate layer, each of the channels being provided with a soluble insert;;the support core is preheated and the body of the structure is made by thermal spraying under a vacuum;;channels are machined in the body from the outside, and said channels are filled by means of soluble inserts;;a closure layer is formed to close the channels in the body, and an outer envelope is formed by thermal spraying under a vacuum, after preheating; and;all of the soluble inserts and the intermediate layer are eliminated.