吸气式PDE点火室引入氧气的试验研究  

Experimental research of oxygen introduced in ignition chamber for air-breathing pulse detonation engine

作　　者：胡焰彬 翁春生[1] 白桥栋[1] 杨建鲁[1] 黄孝龙[1] 

机构地区：[1]南京理工大学瞬态物理国家重点实验室,南京210094

出　　处：《固体火箭技术》2015年第3期342-346,共5页Journal of Solid Rocket Technology

基　　金：国家自然科学基金(11372141);中央高校基本科研业务费专项基金(30920130112007)

摘　　要：为了改善吸气式脉冲爆轰发动机的爆轰效果,在发动机的点火室内引入了氧气,并开展了系列试验研究,研究结果表明,点火室内引入氧气,提高了吸气式PDE的爆轰波压力与传播速度,缩短了点火起爆的时间,增加了发动机的平均推力,简化了发动机内的强化燃烧装置。与纯空气状况相比,爆轰波压力最大增加了1.28倍、爆轰波传播速度与发动机平均推力的最大增幅分别为69.57%和62.84%,点火起爆时间则相应减少了36.47%。点火室引入的氧气量存在临界值,小于临界值时随着引入氧气量的提高,发动机爆轰效果的改善越显著;大于临界值时,发动机会形成连续燃烧。Oxygen was introduced in the ignition chamber in order to improve the detonation performance of the air-breathing pulse detonation engine （APDE）.The results show that the increased detonation pressure and spread velocity as well as the short-ened ignition-detonation time of ABPDE is acccompanied with the introducing of oxygen supply. Meanwhile,the intensifying combus-tion device was simplified with an enhanced average thrust force.In contrast to the air supply,the detonation pressure,spread velocity and average thrust force were increased by 128%,69.57% and 62.84%,respectively,whereas the ignition-detonation time was reduced by 36.47%.In fact,there exists a critical value of the increasing oxygen content coefficient,i.e.,detonation performance could be dramatically improved by increasing the O2 feed （ less than 8%）;otherwise,continuous burning would occur.

关 键 词：吸气式脉冲爆轰发动机 点火室 氧含量 燃烧转爆轰 平均推力 试验研究 

分 类 号：V235.22[航空宇航科学与技术—航空宇航推进理论与工程]