前言在美国,目前定型型号的液体火箭发动机的再生冷却推力室,基本上都是钎焊的管束式结构。其特点是结构重量轻、管子的圆截面可有效地承受冷却剂和燃气气体间的压差。但是,这种推力室的加工工艺复杂,需要的工艺装备多,生产成本高,难于改变推力室的结构尺寸。特别是随着高压补燃发动机的研制和高能推进剂的应用,带来了高的 Preface In the United States, at present, the regenerative cooling thrust chamber of a liquid rocket engine of a fixed type is basically a brazed tube bundle structure. It is characterized by its light weight and the circular cross-section of the tube to effectively withstand the pressure differential between the coolant and the gas. However, this thrust chamber complex processing technology, the need for more technology and equipment, high production costs, difficult to change the thrust chamber structure size. Especially with the development of high-pressure make-up engines and the application of high-energy propellants, high