Numerical study on cavitating flow-induced vibration of liquid rocket engine inducer

Modification on Cavitating Inducer Performance

This paper explores the effect of inlet flow modifcation on the cavitating and noncavitating performance of two cavitating inducers, one of simple helical design and the other a model of the low-pressure LOX pump in the Space Shuttle Main Engine. The modifications were generated by sections of honeycomb, both uniform and nonuniform. Signifcant improvement in the performance over a wide range of...

Numerical simulation of combustion stability of liquid rocket engine based on chemistry dynamics

Combustion instability of O2/kerosene, O2/kerosene/hydrogen, and O2/kerosene/hydrogen spray flame is numerically studied. The numerical results of combustion self-oscillation are consistent with the historical experiments. Hydrogen is helpful to stabilizing oxygen/hydrocarbon combustion. High gas injecting velocity of the coaxial injector would increase the combustion stability. Contrary to the...

Numerical Simulation of Cryogenic Injection in Rocket Engine Combustion Chambers

The Use of Vibration Data for Liquid Rocket Health Monitoring

An approach is presented to the construction of a liquid rocket Health Monitoring (HM) system capable of using both, vibratory and thermodynamic data. Preliminary results are obtained in the area of vibration data tracking/identification, using as a test bed a low-order linear dynamic model of the Space Shuttle Main Engine (SSME) High Pressure Fuel Turbopump (HPFTP). Limitations and future exte...

Numerical Simulation of Cryogenic Injection in Rocket Engine Combustion Chambers

The numerical simulation of cryogenic combustion is crucial for a better understanding of the complex physics involved in reactive flows of rocket engines and to help to reduce the development cost of these engines. The focus of this study is set on the oxidizer injection and its dispersion through jet dense core destabilization and atomization or supercritical mixing. Specific models have been...