THRUST GAS GENERATOR HAVING A COMBUSTION CHAMBER AND THRUST NOZZLE REGENERATIVELY COOLED BY A LIQUID

摘要

A thrust gas generator includes a combustion chamber and a nozzle including a converging portion terminating in a nozzle neck and a diverging outer portion extending from the neck to the thrust gas discharge. The combustion chamber proper and/or also the converging thrust nozzle part and the thrust nozzle neck comprises an inner part with a solid base wall body having cooling channels which are machined into the exterior thereof and which extend longitudinally and which include an outer wall which covers the cooling channels and which is applied by electroplating. An outer end part includes the divergent outer end of the thrust nozzle which is constructed of capillary tubes which are arranged at least over a portion of their lengths with spaces therebetween and around the longitudinal axis of the thrust nozzle and they have a constant cross section over at least a major portion of their length. A closed electroplated layer connects the tubes and it is applied firmly over a portion of the periphery of each tube and extends between the spaces of the tubes to bind the tubes into a single unit. The inner part and the outer parts are interconnected by a solid intermediate part by the electroplated layer which also covers and interconnects the tubes. The connection between the capillary tubes of the outer part and the longitudinally extending passages of the intermediate part is effected especially by soldering or welding of adjacent tube ends into the longitudinal passages in a mechanically strong and pressure-tight manner.