Performance analysis of pre-turbine hybrid pulse detonation engine

作者：Qiu Hua^*; Xiong Cha; Yan Chuan Jun

来源：Journal of Propulsion Technology, 2012, 33(2): 327-332.

• Area ratios
• Blow-down ratio
• Bypass
• Conventional engine
• Detonation tubes
• Hybrid
• Inlet conditions
• Operating ranges
• Performance
• Performance analysis
• Performance Model
• Pressure ratio
• Propulsive performance
• Pulsed detonation engine
• Total pressure
• Turbine inlet pressure
• Turbine inlet temperature

The pressure ahead of detonation chamber in bypass is utilized to drive a fore turbine combined with pulsed detonation engine. A performance model is established to study the components characteristics and propulsive performance of the engine. The calculation results show that a quasi-stable inlet condition of total temperature and total pressure can be realized in this combined PDE. The increase in the area ratio of side hole to detonation tube section (drive area ratio) leads to the increase in flow flux inpouring the turbine. But the total turbine inlet temperature, total turbine inlet pressure and blow-down ratio of turbine decrease as increasing drive area ratio. Contrast with conventional engine based on constant-pressure combustion, the turbine inlet temperature of combined PDE with drive area ratio 1 is 80 K lower than the former under the same pressure ratio and fuel-gas ratio. In another words, increase in drive area ratio may improve the performance of combined PDE. Pressure ratio can be changed by changing in drive area ratio to adapt varied flight Mach number, which induces the enlargement of operating range.

• 出版日期2012
• 单位西北工业大学