Experimental Investigation on Performance of Pulse Detonation Rocket Engine Model

来源 :Chinese Journal of Aeronautics | 被引量 : 0次 | 上传用户:THINKPAD_sl400
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The PDRE test model used in these experiments utilized kerosene as the fuel, oxygen as oxidizer, and nitrogen as purge gas. The solenoid valves were employed to control intermittent supplies of kerosene, oxygen and purge gas. PDRE test model was 50 mm in inner diameter by 1.2 m long. The DDT (deflagration to detonation transition) enhancement device Shchelkin spiral was used in the test model. The effects of detonation frequency on its time-averaged thrust and specific impulse were experimentally investigated. The obtained results showes that the time-averaged thrust of PDRE test model was approximately proportional to the detonation frequency. For the detonation frequency 20 Hz, the time-averaged thrust was around 107 N, and the specific impulse was around 125s. The nozzle experi-ments were conducted using PDRE test model with three traditional nozzles. The experimental results obtained demonstrated that all of those nozzles could augment the thrust and specific impulse. Among those three nozzles, the convergent nozzle had the largest increased augmentation, which was approximately 18%, under the specific condition of the experiment. The PDRE test model used in these experiments utilized kerosene as the fuel, oxygen as oxidizer, and nitrogen as purge gas. The solenoid valves were employed to control intermittent supplies of kerosene, oxygen and purge gas. PDRE test model was 50 mm in inner diameter by 1.2 m long. The DDT (deflagration to detonation transition) enhancement device Shchelkin spiral was used in the test model. The effects of detonation frequency on its time-averaged thrust and specific impulse were experimentally investigated. The obtained results showes that the time- averaged thrust of PDRE test model was approximately proportional to the detonation frequency. For the detonation frequency 20 Hz, the time-averaged thrust was around 107 N, and the specific impulse was around 125s. The nozzle experi-ments were conducted using PDRE test model with three traditional nozzles. The experimental results gave that all of those could could augment the thrust and specific impulse. Among those t hree nozzles, the convergent nozzle had the augmented augmentation, which was approximately 18%, under the specific condition of the experiment.
其他文献
广东省工商局日前抽查了珠海、汕头、梅州、中山、阳江等7市流通领域57家销售企业销售的102批次金银饰品,珠宝玉石合格率仅为27.5%。在剔除纯标签不合格的产品后,质量合格率
近年来,我们山东省威海市工商局坚持把法制工作纳入“一把手”工程来抓,法制建设取得了一定成绩。去年,我局先后被市政府授予“依法行政先进单位”称号,被省工商局授予全省工
近日,亚洲第一、中国最大的风电企业龙源电力集团股份有限公司,计划年底在香港上市,上市的前期准备工作已进入冲刺阶段。这次改制是龙源电力上市进程中的关键一步,新公 Rece
搭飞机时,谁坐在你隔壁?这是个大问题。尤其是在长途飞行,你需要和你的邻座共度漫长的时间,同吃同睡,他将严重影响这一行程的质量。好在一些航空公司越来越体贴,开始允许乘客
过去,这里是交通的神经末梢,乡村公路和泥泞的小路相生相伴。如今,这里却是东北交通的一个重要节点,高速公路、城市快轨、铁路专用线纵横驰骋。站在新的历史起点上,从高速公
从2006年11月1日起,《农产品质量安全法》在全国正式实施。今后,伪造有机、绿色等食品谁的企业、个人,最高将被处罚10万元。由农业部和北京市人民政府联合主办的“农产品质量
2月26日,厦航第五届董事会第二次会议在武夷山大红袍山庄隆重召开,董事会成员审议通过了多项事关厦航发展的重要议案,为厦航“十二五”战略规划的稳步推进提供了有力保障。出
Toll-free holidays bring massive congestion and opposition by highway operators Dubbed the “Golden Week,”the National Day holiday (normally October 1-7) is a
穿过长满杂草的厂区,《创业家》记者进入刘军的办公室,这里简陋得只有几套桌椅,窗外大货车驶过发出的轰鸣声震耳欲聋。这位中联航空的创始人就在这样的环境里,开始讲述他和旋翼机的故事。  这个40多岁的西北汉子早年在试飞院做地勤,2007年创办中联航空,开始尝试造旋翼机,这是一种外形类似直升机的飞行器,顶端有一个旋翼,依靠机舱后部的螺旋桨提供动力。从出国考察到自学驾机,再到设计自制,5年下来,刘军已经投进
葱的味道  王云霞    山东人爱吃葱,我也不例外,几乎到了“食不可一日无葱”的地步。煎饼卷大葱、大葱蘸大酱……香辣微甜的大葱吃进肚里,遍体通泰,浑身都透着舒适。  记得第一次生吃大葱,是我六岁那年的冬天。那天,北风裹着  雪花,漫天飞舞。家里吃的东西已经不多了,我和弟弟趴在窗台上,等妈妈回来。眼看着天黑透了,妈妈才急匆匆地走进家门,手里拎着一纸包东西。我和弟弟一下围了上去,妈妈打开纸包说:“今天