Investigation of two dimensional thermal loads in the region near the injector head of a high pressure subscale combustion chamber

Optimization of heat transfer management is a key issue in designing a rocket combustion chamber. This paper presents the new test specimen and the measurement technique that has been developed und successfully used by the Institute of Space Propulsion for high resolution investigations of the influence of injector-wall interactions on heat transfer in a subscale combustion chamber. The new measurement method allows obtaining two dimensional heat load distribution on the hot gas side at real rocket engine-like conditions at combustion chamber pressures up to 15 MPa. The presented investigations have been performed at the European Research and Technology Test Facility P8 for cryogenic subscale rocket engines.