DEVICE FOR FIXING INJECTION ELEMENT TO INJECTION HEAD OF ROCKET ENGINE AND METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a device for fixing a base part of an injection element on a hole of a base plate of an injection head in a rocket engine guaranteed fixing which is mechanically and absolutely sure in fluid-tight relation by economical manufacture. SOLUTION: A base part 5 is formed in a tapered shape up to its end part, and is provided with a step difference part. A first step difference part 7 of the base part 5 collides with a base plate 1, a screw 6 screwed into the base plate 1 is arranged on the rear side of the first step difference part 7, and a second step difference part 8 and a first cylindrical part 9 which is formed smoothly and adjacently to the second step difference part 8 are arranged on the rear side of the screw 6. A third step difference part 11 is arranged, and a brazing ring 12 made of gold alloy is mounted on the third step difference part 11. A second cylindrical part which is formed smoothly up to an end part is arranged on the rear side of the third step difference part 11. A brazing clearance 13a is arranged between the cylindrical part and a hole corresponding to the base plate 1.