热科学与技术
熱科學與技術
열과학여기술
JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY
2015年
2期
144-148
,共5页
盛德仁%史香锟%陈坚红%李蔚
盛德仁%史香錕%陳堅紅%李蔚
성덕인%사향곤%진견홍%리위
大气呼吸模式激光推进%理想动力循环%能量转换效率
大氣呼吸模式激光推進%理想動力循環%能量轉換效率
대기호흡모식격광추진%이상동력순배%능량전환효솔
air-breathing mode laser propulsion%ideal power cycle%energy conversion efficiency
大气呼吸模式激光推进的比冲和冲量耦合系数受制于其能量转换效率,对能量转换效率进行分析具有重要意义。建立了大气呼吸模式激光推进的理想动力循环模型,分析了激光推进过程中的能量转换效率,并探讨了提高能量转换效率的可行途径。研究结果表明,增大冲压比或定容增压比是提高能量转换效率的有效途径,其中增大飞行速度能有效增大冲压比,提高激光功率密度和改变工质掺杂特性能有效增大定容增压比。掺入水滴杂质形成的气液两相工质在激光推进领域具有较好的发展前景。
大氣呼吸模式激光推進的比遲和遲量耦閤繫數受製于其能量轉換效率,對能量轉換效率進行分析具有重要意義。建立瞭大氣呼吸模式激光推進的理想動力循環模型,分析瞭激光推進過程中的能量轉換效率,併探討瞭提高能量轉換效率的可行途徑。研究結果錶明,增大遲壓比或定容增壓比是提高能量轉換效率的有效途徑,其中增大飛行速度能有效增大遲壓比,提高激光功率密度和改變工質摻雜特性能有效增大定容增壓比。摻入水滴雜質形成的氣液兩相工質在激光推進領域具有較好的髮展前景。
대기호흡모식격광추진적비충화충량우합계수수제우기능량전환효솔,대능량전환효솔진행분석구유중요의의。건립료대기호흡모식격광추진적이상동력순배모형,분석료격광추진과정중적능량전환효솔,병탐토료제고능량전환효솔적가행도경。연구결과표명,증대충압비혹정용증압비시제고능량전환효솔적유효도경,기중증대비행속도능유효증대충압비,제고격광공솔밀도화개변공질참잡특성능유효증대정용증압비。참입수적잡질형성적기액량상공질재격광추진영역구유교호적발전전경。
The analysis of energy conversion efficiency of air-breathing laser propulsion is of great importance since both the specific impulse and the momentum coupling coefficient are subj ect to it. The ideal power cycle model for air-breathing laser propulsion was established.The energy conversion efficiency of the laser propulsion process was analyzed.The feasible ways to improve the energy conversion efficiency were also investigated.The results show that increasing the compression ratio or the pressure ratio is an effective way to improve the energy conversion efficiency.The compression ratio increases with an increase in the flight speed,and the pressure ratio increases with an increase in the laser power density or the alteration of the propellant doping content.The gas-liquid two phase propellant doped with water droplets is propective in the field of laser propulsion.