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我兔一直在发展的脉冲爆震波发动机,可以参考CCTV   http://v.ifeng.com/mil/worldwide/201209/ffe454f6-eaa2-4fb2-b0b5-107228b04489.shtml

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http://tieba.baidu.com/p/2055499387?pn=1
丙烷爆震特性的试验
张彭岗,何小民,李建中,张靖周
(南京航空航天大学 能源与动力学院, 南京 210016)

摘要:为了解丙烷的爆震特性,在60mm×60mm×2000mm的方爆震管内,分别用空气、纯氧以及它们的混合物作为氧化剂进行了单次爆震性能的试验研究.利用安装在同一截面上的压力传感器与离子探针同时测得缓燃爆燃转捩(DDT)位置处爆震管内的压力、火焰传播速度和方向.获得了丙烷的起爆性能和DDT特性、压力波与火焰的传播规律.试验结果表明:①在本试验管道内利用空气作为氧化剂无法形成爆震波,而丙烷和纯氧混合物的DDT距离则很短;②在化学恰当比条件下DDT的距离最短,但随着氮气含量的增加DDT距离会增长;③DDT过程中压力波和火焰具有相近的变化趋势.
关键词:燃烧;爆震特性;丙烷;脉冲爆震发动机
中图分类号:V231.22 文献标识码:A


Experimental study on detonation characteristic of propane
ZHANG Penggang, HE Xiaomin, LI Jianzhong,ZHANG Jingzhou
(College of Energy and Power Engineering,
Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
Abstract:In order to understand the detonation characteristic of propane, a series of single detonation experiments was conducted with air,oxygen and air/oxygen as oxidizer in square detonation tube. Firstly the detonation performance of propane was studied. Secondly the characteristic of deflagration to detonation transition(DDT),spread rule of wave and flame were achieved under the condition of different equivalence ratio and degrees of nitrogen dilution. The ionprobes and pressure transducers were utilized to get the velocity and pressure in the tube, respectively. The results indicate: (1)C3H8/air mixtures could not form detonation wave, and that the DDT distance of C3H8/O2 mixtures was very short,(2)the runup distance was minimum for stoichiometric mixture , increasing as the nitrogen dilution became richer, and(3)shock and flame have similar change trend in DDT.
Key words:combustion; detonation characteristic; propane; pulse detonation engine

我兔一直在发展的脉冲爆震波发动机,可以参考CCTV   http://v.ifeng.com/mil/worldwide/201209/ffe454f6-eaa2-4fb2-b0b5-107228b04489.shtml

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http://tieba.baidu.com/p/2055499387?pn=1
丙烷爆震特性的试验
张彭岗,何小民,李建中,张靖周
(南京航空航天大学 能源与动力学院, 南京 210016)

摘要:为了解丙烷的爆震特性,在60mm×60mm×2000mm的方爆震管内,分别用空气、纯氧以及它们的混合物作为氧化剂进行了单次爆震性能的试验研究.利用安装在同一截面上的压力传感器与离子探针同时测得缓燃爆燃转捩(DDT)位置处爆震管内的压力、火焰传播速度和方向.获得了丙烷的起爆性能和DDT特性、压力波与火焰的传播规律.试验结果表明:①在本试验管道内利用空气作为氧化剂无法形成爆震波,而丙烷和纯氧混合物的DDT距离则很短;②在化学恰当比条件下DDT的距离最短,但随着氮气含量的增加DDT距离会增长;③DDT过程中压力波和火焰具有相近的变化趋势.
关键词:燃烧;爆震特性;丙烷;脉冲爆震发动机
中图分类号:V231.22 文献标识码:A


Experimental study on detonation characteristic of propane
ZHANG Penggang, HE Xiaomin, LI Jianzhong,ZHANG Jingzhou
(College of Energy and Power Engineering,
Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
Abstract:In order to understand the detonation characteristic of propane, a series of single detonation experiments was conducted with air,oxygen and air/oxygen as oxidizer in square detonation tube. Firstly the detonation performance of propane was studied. Secondly the characteristic of deflagration to detonation transition(DDT),spread rule of wave and flame were achieved under the condition of different equivalence ratio and degrees of nitrogen dilution. The ionprobes and pressure transducers were utilized to get the velocity and pressure in the tube, respectively. The results indicate: (1)C3H8/air mixtures could not form detonation wave, and that the DDT distance of C3H8/O2 mixtures was very short,(2)the runup distance was minimum for stoichiometric mixture , increasing as the nitrogen dilution became richer, and(3)shock and flame have similar change trend in DDT.
Key words:combustion; detonation characteristic; propane; pulse detonation engine
脉冲爆震燃烧室与涡轮相互作用的试验
邓君香,郑龙席,严传俊,蒋联友,李娜,熊姹
(西北工业大学 动力与能源学院, 西安 710072)

摘要:采用汽油和空气作为燃料和氧化剂,进行了脉冲爆震燃烧室(PDC)与涡轮相互作用的原理性模型试验装置的试验.试验结果表明:PDC工作平稳,在发动机爆震工作时压气机出口空气质量流量比用于PDC产生爆震的空气质量流量大100kg/h左右;在PDC出口前已形成充分发展的爆震波,压力波经过涡轮膨胀后峰值压力和波速明显降低;且充填系数越大,各位置处的平均峰值压力越高,压力波经过涡轮后的衰减越小; 涡轮在经受累计40多分钟共12000多次脉冲爆震波或压力波的冲击后仍然完好无损.
关键词:脉冲爆震燃烧室(PDC);涡轮;相互作用;试验研究
中图分类号:V231.2 文献标识码:A


Experimental investigations of interaction of a pulse detonation combustor with a turbine
DENG Junxiang, ZHENG Longxi, YAN Chuanjun, JIANG Lianyou,LI Na, XIONG Cha
(School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China)
Abstract:Experimental investigations of a principle model of interaction of pulse detonation combustor (PDC) with turbine were made by using gasoline and air as fuel and oxidizer. The experimental results show that pulse detonation combustor can run stably. During PDC detonating, the air mass flow at the compressor outlet is about 100 kg/h more than that of PDC required for detonation. The full pulse detonation is achieved before the PDC outlet. The peak pressure and wave speed of pressure wave are significantly reduced after expansion through the turbine. Larger fill fraction can lead to a stronger detonation wave and a strong shock wave can be less affected by an obstacle like a turbine than a weak one. The turbocharger does not exhibit any signs of damage after over 40 minutes of detonation testing.
Key words: pulse detonation combustor (PDC); turbine; interaction;
experimental investigations
煤油/空气三管脉冲爆震发动机
共用尾喷管研究

李建中1,王家骅1,唐豪1,潘波2
(1南京航空航天大学 能源与动力学院,南京 210016;
2总参谋部陆航研究所 直升机与发动机研究室,北京 101114)

摘要:探索脉冲爆震涡扇组合发动机的可行性,建立了煤油/空气三管气动阀式脉冲爆震发动机PDE试验系统,设计、加工了收敛型尾喷管和收敛-扩张型尾喷管,在三个内径100 mm,长2 000 mm的爆震管内获得了充分发展的爆震波,成功实现总工作频率30 Hz稳定时序工作,研究了三管PDE各爆震管之间爆震燃烧特性的相互影响规律.三管PDE安装共用尾喷管能够提高爆震室内压力,提高三管PDE的工作性能.研究结果为研制多管脉冲爆震发动机原理样机提供了理论依据.
关键词:航空、航天推进系统;脉冲爆震涡扇组合发动机(PDTE);脉冲爆震发动机(PDE);
爆震燃烧;多管;气动阀
中图分类号:V23522文献标识码:A
爆震频率对脉冲爆震发动机引射性能影响的实验

黄希桥,严传俊,王治武,范玮,蒋波
(西北工业大学 动力与能源学院,西安 710072)

摘要:采用汽油为燃料,空气为氧化剂,对多循环脉冲爆震发动机(PDE)加圆直形引射器的增推性能进行了实验研究.实验采用力传感器法对爆震发动机加引射器前后不同爆震频率以及不同引射器长度下的平均推力进行了测量.结果表明:脉冲爆震发动机非稳态引射器可以提高系统的平均推力,当爆震频率为25 Hz时平均推力增益最大,可达64.4%.在一定频率下,对直径一定的圆直管引射器存在着一个最佳长径比4.58,此时对应推力增益性能最好.
关键词:航空、航天推进系统;脉冲爆震发动机(PDE); 爆震频率; 推力增益; 实验研究
中图分类号:V2312;V2287文献标识码:A


Effect of operating frequency on performance of pulse
detonation engine driven ejector
HUANG Xiqiao, YAN Chuanjun, WANG Zhiwu, FAN Wei, JIANG Bo
(School of Power and Energy,
Northwestern Polytechnical University, Xi’an 710072, China)
Abstract:A preliminary experimental investigation of the thrust augmentation performance of a round, straight ejector on a multicycle pulse detonation engine (PDE) was performed while using gasoline as fuel and air as oxidizers. The average thrusts of the PDE with ejector and without ejector were measured with thrust transducer at different detonation frequencies and different lengthtodiameter ratios of the ejector. The experimental results indicate that ejector system alone can augment the average thrust obtained from the pulse detonation engine. The maximum value of the average thrust augmentation is found to be about 64.4% when the detonation frequency is 25 Hz.The optimal value of the ejector lengthtodiameter ratio is 4.58 when the ejector inner diameter and the operation frequency are constant, which corresponds to the best thrust augmentation performance.
Key words:aerospace propulsion system; pulse detonation engine (PDE);
detonation frequency; thrust augmentation; experimental study
只闻楼梯响 不见人下来
环形脉冲爆震发动机引射性能
秦亚欣,于军力,高歌
(北京航空航天大学 能源与动力工程学院
航空发动机气动热力科技重点实验室,北京 100191)

摘要:采用解析方法得出爆震波在爆震管内的参数分布,应用数值方法对爆震波衰退为激波后的传播、排除过程进行了多循环模拟.通过对环形爆震管非稳态引射过程的分析,得出非稳态引射过程可以分成四个阶段,环形爆震管比传统的圆形爆震管的引射作用更强.不同结构参数的引射喷管对环形爆震管的引射增推性能不同,经过分析,得到了较佳的引射喷管的入口尺寸、内表面形状、长度/直径比以及轴向位置,为提高脉冲爆震发动机的性能提供参考.
关键词:脉冲爆震发动机;爆震波;环形;引射;数值计算
中图分类号:V23522文献标识码:A

Performance studies of annular pulse detonation engine ejectors
QIN Yaxin,YU Junli,GAO Ge
(National Key Laboratory of Science and Technology on AeroEngines,
School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,
Beijing 100191,China)
Abstract:The distributions of detonation parameters in detonation chamber were gained by analytical numeration,and then multiplecycle numerical simulations were carried out after detonation wave broke up to shock wave.The analysis on the mechanism of unsteady ejection shows that the process of unsteady ejection can be divided to four stages,and the ejection performance of annular pulse detonation duct is stronger than round pulse detonation duct.Different structures and parameters could induce different timeaveraged thrust augmentations.The better shape of the ejector inlet,interior surface,ejector lengthtodiameter ratio and axial placement were obtained through analysis,offering references to augment the performance of pulse detonation engine.
Key words: pulse detonation engine;detonation wave;annular;ejection;
numerical simulation
脉冲爆震发动机旋流式气动阀的设计与实验
郑殿峰1 ,杨义勇2,王家骅3
(1.北京大学 工学院 能源与资源工程系,北京 100084;
2.中国地质大学(北京) 工程技术学院,北京 100083;
3.南京航空航天大学 能源与动力学院,南京 210016)

摘要:为了研究大管径吸气式脉冲爆震发动机(PDE)的爆震性能,设计了不同结构的旋流式气动阀,由弯曲叶片构成气动阀推力壁“封闭”平面.开展了气动阀阻力系数实验与工程计算方法研究,不同气动阀的阻力系数差别很大,实验结果与理论计算结果相符.爆震燃烧实验证明,阻力系数较大的气动阀能够产生爆震波,要求气动阀阻力系数大于10,堵塞比大于60%,才能实现PDE的协调工作.从而获得了气动阀设计一般原则与工程计算方法,对于气动阀的优化设计有重要的参考价值.
关键词:脉冲爆震发动机;气动阀;阻力系数;旋流;爆震燃烧
中图分类号:V23522文献标识码:A

收稿日期:20090521; 修订日期:20100104作者简介:郑殿峰(1966-),男,黑龙江富锦人,助理研究员,博士,主要从事燃烧等方面研究工作.通讯作者:杨义勇(1966-),男,安徽合肥人,教授,博士,主要从事机械动力学方面研究工作
.
Design and experimental study on whirl aerovalve
for pulse detonation engine
ZHENG Dianfeng1,YANG Yiyong2,WANG Jiahua3
(1.Department of Energy and Resources Engineering,
College of Engineering,Peking University,Beijing 100084,China;
2.School of Engineering and Technology,
China University of Geosciences (Beijing),Beijing 100083,China;
3.College of Energy and Power Engineering,
Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
Abstract:In order to study the airbreathing pulse denotation engine (PDE), whirl aerovalves of different configurations were designed. The “closed” plane of aerovalve thrust wall was constituted by the curved blade. The drag coefficients of different aerovalves were obtained by experimental study and calculation using specific structural parameters, and the distinction of these drag coefficients was widely remarkable, showing consistency with theoretical calculations. The detonation combustion experiments show that the aerovalve with a larger drag coefficient can produce detonation waves, and the pulse detonation engine can achieve coordinated action if the aerovalve drag coefficient is bigger than 10, and blockage ratio more than 60 percent. The design principles and the theoretical calculation method about aerovalve were obtained. These results are very useful for optimal design of aerovalve.
Key words: pulse detonation engine(PDE);aerovalve;drag coefficient;whirl blast;
detonation combustion
脉冲爆震发动机无阀工作对供给系统影响研究
邱华,严传俊,熊姹
(西北工业大学 动力与能源学院, 西安 710072)

摘要:通过测量无阀脉冲爆震发动机非定常工作对供气供油系统影响的压力数据,对建立的燃油和空气管路数值仿真模型进行了验证,基于建立的模型研究了供给系统的流量特性.研究结果表明,供油供气系统受同一爆震管头部压力作用带来的影响是不同的,这进一步导致供给系统气动开启初始充填的非定常特性,对于给定的供给系统,这种非定常特性的持续时间是固定的,当发动机工作频率增大时,其占单个周期的比重越来越大,最终导致脉冲爆震发动机的不稳定工作.
关键词:无阀脉冲爆震发动机;供给系统;试验研究;数值仿真;匹配特性
中图分类号:V231.22文献标识码:A


Research on the effects of valveless operations of pulse
detonation engine on supply system
QIU Hua,YAN Chuanjun,XIONG Cha
(School of Power and Energy,
Northwestern Polytechnical University, Xian 710072,China)
Abstract:Experimental research on the effects of valveless pulse detonation engine on supply system was conducted. The pressures at different positions of pipe were measured, and also used to verify the numerical simulation models of fuel pipe and air pipe. Based on the numerical model, flow characteristics of the supply system were investigated. This showed that the influences of the same head pressure on the air and fuel supplies were different. And it caused unsteady filling when the supply system was opened because of differential pressure. The unsteady filling time was fixed and determined by the given supply system. When the working frequency of the engine became larger, the ratio of this time to one cycle time increased, that is to say, more influences of unsteady feeding were imposed on the operation characteristics of the engine. Therefore, the distribution of fuel concentration was more nonuniform and the working state of pulse detonation engine was instable.
Key words: valveless pulse detonation engine; supply system; experimental research; numerical simulation; matching characteristic
西北工业大学严传俊教授主持的国家自然科学基金项目“一种新概念爆震燃烧室的应用基础研究”和“新型脉冲爆震发动机探索性研究”于2001年12月通过了成果鉴定,并于2002年12月荣获部级科学技术奖二等奖。
  
    脉冲爆震燃烧是一种新型燃烧方式,涉及燃烧学、工程热力学、热流体力学、传热传质学、爆炸力学等诸多领域,是工程热物理学科领域一个重要研究课题。该项研究技术含量高,难度很大。脉冲爆震发动机是一种新概念发动机,工作原理、关键技术与传统的涡轮喷气发动机迥然不同;工作过程具有非稳态性质,不能采用常规分析方法,也不能采用涡喷发动机结构形式。由于其潜在的军事应用背景,国外对其关键技术严格保密,可借鉴的资料很少。严传俊教授及其研究小组从1993年获得国家自然科学基金资助开始,在以下几个方面开展了近10年的基础性研究和探索:
  
  1.
  
  阐明了脉冲爆震发动机工作原理,建立了脉冲爆震发动机工作循环及性能分析方法,发展了脉冲爆震发动机在各种工况下的性能分析软件包;
  2.
  
  对脉冲爆震发动机工作过程进行了数值模拟,揭示了脉冲爆震发动机中由爆燃向爆震的转变过程。计算结果与试验结果相比,较为符合,为脉冲爆震发动机的设计与试验研究提供了有力工具;
  3.
  
  在更接近实际脉冲爆震发动机工作条件下进行了单次爆震波试验,研究了单次爆震的点火、起爆、爆震波的传播等问题,为脉冲爆震试验奠定了基础;
  4.
  
  建立了脉冲爆震发动机动态过程的测控和数据采集及处理系统。成功地实现了脉冲爆震压力、脉冲爆震速度、脉冲爆震推力的测量。
  
    迄今为止,该研究已发表国内外期刊学术论文30余篇,特别是在权威的国际燃烧杂志《Combustion and Flame》上发表了论文;已培养博士4人,硕士6人。
  
    现场进行的试验和测试表明:以汽油为燃料,以空气为氧化剂的新型两相脉冲爆震发动机原理机,产生了充分发展的脉冲爆震波和推力。工作过程平稳可靠,频率可调,在国际上首次实现了无进气阀的脉冲爆震发动机原理性试验。
  
    创造性研究成果集中体现在:发展了一种新型的脉冲爆震发动机原理样机。与国外同类技术相比,其先进性主要有:以可爆性较差的汽油/空气为反应物、单级起爆、起爆能量小(50mJ)、由爆燃向爆震的转变距离短、油气供给系统为新颖的无阀结构。在脉冲供油、供气、点火、单级起爆、缩短爆燃向爆震转变距离、充填度等关键技术研究方面有重大突破。
  
    本研究成果为火箭式或吸气式脉冲爆震发动机的研制提供了技术基础。由于本项目取得重要进展,已引起国际同行的广泛关注。先后与美国Princeton大学、Stanford大学、Florida大学建立了合作与交流的关系。
向社区举报违规内容
这些都是公开的论文,意义不大
2013-2-19 09:12 上传


前面的2个轴驱动升力风扇可以考虑换成2个震爆波发动机 高推重比  PS:三翼面或者2翼面不在本次YY讨论中
也可考虑弄4个震爆波发动机来提供升力!!
2013-2-19 09:20 上传

2013-2-19 09:22 上传

不明,觉厉
希望兔子军工更上一层楼
怒之新 发表于 2013-2-19 09:20
截图中是什么论坛?
tzblue 发表于 2013-2-19 09:28
截图中是什么论坛?
百度贴吧............
小野猪 发表于 2013-2-19 09:31
百度贴吧............
http://tieba.baidu.com/p/2055499387?pn=1
YY图两个风扇中间那条S形的曲线很诱人
好吧好吧 我只是借用一下他的图片 我只是想讨论 一下震爆波作为升力的可行性
wenxi250 发表于 2013-2-19 09:41
YY图两个风扇中间那条S形的曲线很诱人
2楼呼唤你
震爆波发动机
八九十年代就开始流传了
不明真相
这个是真的么
爆震发动机离实用还远得很,lz贴的论文中,西工大的严传俊算是起步较早的,目前也就是用汽车电火花塞和电磁阀进行实验的水平,爆震频率不超过80Hz
好吧,看着很美好,希望加快实现
虽然版主加精,但是本人还是不相信中国很会搞鳖版F35B,垂直起降只能用于近距支援,近距支援作战要隐身做啥?