LOx와 Kerosene을 추진제로 하는 1열 핀틀 분사기의 고압 연소성능 특성에 관한 연구 = Study on the High Pressure Combustion Performance Characteristics of the 1st Row Pintle Injector using LOx-Kerosene as Propellant

다국어 초록 (Multilingual Abstract)

The pintle injector has many advantages in the key characteristics of a liquid rocket engine, such as combustion stability, combustion efficiency, and wide range of comprehensive thrust control, design and manufacture, and test fired under supercritical conditions. The pintle injector is manufactured with a rectangular, single-row orifice for thrust control and production considerations. In order to verify the combustion performance of the pintle injector and its potential as a commercial injector, the combustion characteristics were analyzed by varying the TMR (Total Momentum Ratio) and BF (Blockage Factor). The result of the hot firing test showed that the heat flux increased as TMR increased, and it confirmed that the characteristic velocity efficiency was more affected by BF than TMR. Suppose a single-row pintle injector with efficiency characteristics insensitive to changes in TMR can achieve high efficiency at low fuel differential pressure conditions. In that case, the variable pintle injector’s design flexibility can be increase.

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