Numerical Study on Air-breathing Mode for Multi-pulsed Laser Propulsion
The process ofthe air exhaust and refill directly influence the pulse propulsion performance in air-breathing mode for multi-pulses laser propulsion. Based on finite volume scheme, the detailed evolving process of the inner and outer flow fluids is simulated under 50Hz pulse frequency. Three kinds of nozzle ignition position are employed to study the air recovery effects on the multi-pulse propulsion performance The propulsion performance is evaluated by the impulse coupling coefficient Cm and a radio of impulse to the mass loss of air in nozzle for each pulse. In order to calculate the variation of the air mass, the total three-dimensional mass is calculated by the two-dimensional discrete model. Numerical simulation results show that the partial filling rate of breathing air has a critical influence on the pulsed propulsion performance. It is beneficial to breathe the air in nozzle when the ignition position locates near the nozzle exit The Cm decreases with the number of the pulses for an uneven low density distribution in nozzle before the next pulse starts; the radios of the impulse to the mass loss of the air in nozzle have been found to be fairly constant after several pulses.
air-breathing multi-pulses impulse coupling coefficient air recovery ignition position
Song Junling Hong Yanji Wen Ming Huang Hui
Company of Postgraduate, the Academy of Equipment Command and Technology, Beijing 101416, China Department of Basic theories, the Academy of Equipment Command and Technology, Beijing 101416, China
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
1084-1087
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）