• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Astronautical Congress >A Study on Condensed Primary Combustion Products of Boron-based Fuel-rich Propellant
【24h】

A Study on Condensed Primary Combustion Products of Boron-based Fuel-rich Propellant

机译：硼富含硼富燃料推进剂的浓缩初级燃烧产物研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Extensive work has been done on boron combustion in ducted rocket which concentrated mainly on secondary combustion, since most boron particles must ignite and burn in the secondary combustor. However, the practical species composition of the combustion products of boron-based propellant at the primary nozzle exit, called primary combustion product, is not well known so far. To clarify the properties of the condensed primary combustion products of boron-based fuel-rich propellants, the elemental, species composition and morphology of the products were studied by using energy dispersive (EDS), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) individually. Analysis shows the elemental compositions of the product are mainly B, C, O. These elements correspond to elementary boron, B2O3, elementary carbon, and boron carbide. The surface of boron in the condensed primary combustion products has been severely oxidized. The products are composed of irregular boron lumps and spherical carbon particles with a diameter of about 100 nm in microstructure. Boron lumps are partially or almost folly covered with carbon particles on the surface. Given that there are lots of carbon particles in the products, the effect of carbon on boron ignition, was also investigated by a laser ignition system. The result shows that the existence of carbon prolongs the ignition delay time of boron. This work could provide important information about both the primary combustion and secondary combustion mechanisms of boron-based propellants in a ducted rocket.
机译：在硼燃烧中已经在管道燃烧中完成了广泛的作品，该火箭主要集中在二次燃烧上，因为大多数硼颗粒必须在二级燃烧器中点燃并燃烧。然而，到目前为止，施主喷嘴出口处的硼基推进剂的燃烧产物的实用物种组成是迄今为止的。为了通过使用能量分散（EDS），X射线光电子能谱（XP）和扫描电子通过使用能量分散（EDS）和扫描电子来澄清基于硼的富含燃料富燃料推进剂的浓缩初级燃烧产物的性能，对产品的元素，物种组成和产物的形态学显微镜（SEM）单独。分析表明产物的元素组合物主要是B，C，O.这些元素对应于基本硼，B2O3，基本碳和碳化硼。稠合的初级燃烧产物中的硼表面严重氧化。该产品由硼块和球形碳颗粒的微观结构中的直径约为100nm的球形碳颗粒组成。硼块部分或几乎愚蠢地覆盖在表面上碳颗粒。鉴于产品中有大量的碳颗粒，还通过激光点火系统研究了碳对硼点火的影响。结果表明，碳的存在延长了硼的点火延迟时间。这项工作可以提供有关硼基推进剂在管道火箭中的主要燃烧和二次燃烧机制的重要信息。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号