【摘 要】
:
A solid-like propellant of carbon-doped glycerol ablated by a nanosecond pulsed laser is investigated. The results show that the specific impulse increases with
【机 构】
:
School of Science, China University of Geosciences,
【出 处】
:
Chinese Physics B
论文部分内容阅读
A solid-like propellant of carbon-doped glycerol ablated by a nanosecond pulsed laser is investigated. The results show that the specific impulse increases with increasing carbon content, and a maximum value of 228s is obtained. The high specific impulse is attributed to the low ablated mass loss that occurs at high carbon content. More importantly, with increasing carbon content, the properties of the doped glycerol approach to those of a solid. These results indicate that propulsion at the required coupling coefficient and specific impulse can be realized by doping a liquid propellant with an absorber.
A solid-like propellant of carbon-doped glycerol ablated by a nanosecond pulsed laser was investigated. The results show that the specific impulse increases with increasing carbon content, and a maximum value of 228s is obtained. The high specific impulse is attributed to the low More importantly, with increasing carbon content, the properties of the doped glycerol approach to those of a solid. These results indicate that propulsion at the required coupling coefficient and specific impulse can be realized by doping a liquid propellant with an absorber.
其他文献
Companies intending to exhibit at EuroBLECH 2002 can noworder the multilingual exhibitor brochure, which contains com-plete information, from Mack Brooks Exhib
目的 探讨热休克蛋白70(HSP 70)mRNA在膀胱移行细胞癌中的表达及与细胞凋亡的关系.方法应用原位杂交法对60例膀胱癌组织中HSP 70 mRNA进行检测,原位DNA末端标记法(TUNEL)检测细胞凋亡情况. 结果60例标本中,HSP 70 mRNA阳性表达率为56.7%(34/60).HSP 70 mRNA表达随肿瘤分级增高而增加(P<0.05);G1,G2和G3各级间两两比较,HSP 7
单位:百万美元国家及地区1999年2 000年2000年 3月2 001年 3月同比飞全球50795.30157271.32413049.76214162.0538 .52墨西哥7537.5128412 .7451880 .6112 014.7817 .13中国43
根据二滩水电站座环蜗壳现场安装的具体情况,从材料、结构、性能、技术、工艺、标准等方面,分析了进口设备的结构、性能、安装工艺、方法等特点。
According to the installat
目的 探讨希罗达对鼻咽癌增敏放疗的剂量限制毒性(DLT)和最大耐受剂量(MTD),同时观察疗效。方法 自2002年8月至2003年6月,临床分期为T2N1M0的Ⅱ期鼻咽癌患者30例,中位年龄43岁(32~63岁),全身功能状态评分≤2。放射治疗为鼻咽原发病灶68~72Gy·34~36次-1·7周-1,颈部淋巴结阳性区64~70Gv·32~35次-1·6.5~7周-1。希罗达分为500,750,10
一、填空题1.根据《中华全国总工会办公厅关于加强和规范乡镇(街道)、开发区(工业园区)工会经费管理的通知》(总工办发〔2014〕34号)的规定,县以上各级工会要加大对乡镇(街道
美丽的呼兰河水,象慈祥的母亲,亲切的怀拥着呼兰小城,多少年来她哺育了无数英雄儿女,如今从呼兰河的黑土地上又走出了一位工程建筑的土专家,他所承建的100来项工程,95%被评为
今年8月22日,是我国社会主义改革开放和现代化建设的总设计师邓小平同志诞辰100周年纪念日。为纪念这位世纪伟人,本刊特在封面刊出小平同志1988年在七届全国人大一次会议上
我以前没接触过新闻报道,从作战部队调入人武部后从事军事工作。一次,部领导凭我述职内容,感到我有—定“文字写作基础”,决定让我负责政工科工作。我只好“大姑娘上轿”头
主持人的话:他是人武战线上一名普通的基层军官,以真诚的笑容和出色的表演,打动了无数官兵的心:他用热忱的心和真挚的情.为军民架通了一座连心桥;他创作的小品、相声先后多次