关键词: 液体推进剂火箭发动机;预燃室;发汗冷却;热控制

Abstract: The study on thermal control of platelet transpiration cooling with liquid oxygen was made for preburner of liquid rocket engine.The analysis of heat transfer was performed by using the Bartle and Leadon correlation to determine the heat flux blockage for transpiration cooled wall.A heat transfer model for platelet and liquid oxygen in different temperatures was used to obtain the thermal penetration depth and the temperature profiles of the platelet and the coolant.The effects of the coolant pressure drop and the controlled channel length on the temperature of the preburner wall were discussed in detail.

Key words: Liquid propellant rocket engine;Precombustion chamber;Sweat cooling;Thermal control