CAJ | 학술논문

为研究水/一氧化二氮组合式射流预冷却涡轮（SteamJet）发动机性能,在建立了射流预冷却的热交换系统计算、物性修正计算、发动机部件特性修正计算和含一氧化二氮的燃烧室计算的数学模型的基础上,建立了基于双轴混排加力式涡扇发动机的水/一氧化二氮组合式SteamJet发动机性能计算模型。在最大加力状态控制规律下,计算分析了SteamJet发动机在水与一氧化二氮不同配比下沿飞行轨道的特性,以及水/一氧化二氮组合式SteamJet发动机的高度速度特性;计算分析了进气系统特性对SteamJet发动机特性的影响。结果表明：与单喷水预冷却的SteamJet发动机相比,水/一氧化二氮组合式SteamJet发动机具有更好的燃烧稳定性和推力特性,能够满足高超声速飞行的需求。
위연구수/일양화이담조합식사류예냉각와륜（SteamJet）발동궤성능,재건립료사류예냉각적열교환계통계산、물성수정계산、발동궤부건특성수정계산화함일양화이담적연소실계산적수학모형적기출상,건립료기우쌍축혼배가력식와선발동궤적수/일양화이담조합식SteamJet발동궤성능계산모형。재최대가력상태공제규률하,계산분석료SteamJet발동궤재수여일양화이담불동배비하연비행궤도적특성,이급수/일양화이담조합식SteamJet발동궤적고도속도특성;계산분석료진기계통특성대SteamJet발동궤특성적영향。결과표명：여단분수예냉각적SteamJet발동궤상비,수/일양화이담조합식SteamJet발동궤구유경호적연소은정성화추력특성,능구만족고초성속비행적수구。
For studying the turbine engine performance of SteamJet with Water/Nitrous Oxide,the mathematical models of the water injection precooling device,the corrected method of physical property,the engine component characteristics computation,and the model of combustion chamber with Nitrous Oxide are built.Based on the models above,the computation model of SteamJet with Water/Nitrous Oxide on basis of the two-spool mix-exhausted turbofan engine with afterburner is built.On the law of the maximum power of SteamJet,the engine characteristics of SteamJet with different proportion of Water/Nitrous Oxide when following flight-trace are calculated.The altitude and velocity characteristics of SteamJet with Water/Nitrous Oxide,and the effect of the inlet characteristics on the engine characteristics are calculated and analyzed as well.Compared with SteamJet without injected oxidizer,SteamJet with injected Water/Nitrous Oxide is of better combustion stability and thrust characteristics,and it can meet the needs of hypersonic flight.