Thermal Stress State of the Heat Exchanger Structural Elements for Helium Heating System of a Liquid Rocket Engine

The paper presents the results of the thermomechanical analysis of the heat exchanger of the helium preparation system for pressurizing the oxidizer and fuel tanks of a liquid rocket engine. Based on the results of numerical simulation of the thermally stressed state in the heat exchanger, which is based on the results of modeling the flow and heat transfer, critical locations of potential structural failure of the heat exchanger are shown.