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燃烧表面
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  burning surface
     Study on burning surface sedimentary deposit of boron-based fuel-rich propellant
     含硼富燃料推进剂燃烧表面“沉积层”研究
短句来源
     A correlation between chemical structure and burning surface temperature(T_s)of solid propellant was conducted by analyzing gas-phase products nearby burning surface.
     通过对燃烧表面附近气相产物的分析,建立了固体推进剂化学结构与燃烧表面温度(Ts)的对应关系。
短句来源
     Method on predicting burning surface temperature of solid propellant
     固体推进剂燃烧表面温度的预估
短句来源
     and the active components of catalysts deposit on the burning surface of propellants and the quenched surfaces of propellants with various catalysts possess different structure.
     催化剂分解的活性组分富集在燃烧表面,不同催化剂使推进剂熄火表面形成不同的结构。
短句来源
     The results show that burning surface of propellants is not regular because of plasma ablation and radiation.
     结果表明,由于等离子体的侵蚀和辐射作用,发射药的燃烧表面不规则;
短句来源
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  “燃烧表面”译为未确定词的双语例句
     Experimental Study of Oxygen Mass-transfer Coefficient in a Surface Ash Layer during the Burning of Pulverized Coal
     煤粒燃烧表面灰层氧气质扩散系数试验研究
短句来源
     The result showed that NPM could improve the thermo-stability of PP/NPM system, and the intumescent char was obtained on the surface of burned sample. LOI reached 26.8% when the NPM was added to 30phr, and the char yield also reached 8.30% at 600℃.
     结果表明,PP/NPM(100/30)体系的氧指数为26.8%,600℃时的成炭率为8.30%,NPM显著提高了体系的热稳定性,能在体系燃烧表面形成致密的炭层,表明NPM具有良好的膨胀阻燃效果。
短句来源
     For polyur-ethane propellants, XPS has been successfully used to determine the atomic con-centrantion and to analyze the chemical combination valency states of the elements on the surface unburned or extinquished by rapid depressurization at various pressures.
     用XPS分析对一种呈负压力指数燃烧特性的聚氨酯复合固体推进剂(404-5A)的未然表面和在2、2.5、3.0、3.5、4.0MPa压强下快速降压熄火后的燃烧表面作元素组成及其化学价态的分析,得到了不同价态的各元素原子百分含量。
短句来源
     the SEM observations of the quenched burning surfaces and the interior structures are made,and some results are presented in this paper.
     还讨论了某硝胺发射药在不同压力下,其内部组织结构和燃烧表面状况的观察结果。
短句来源
     This paper analysed the chemical properties of primary decomposition prod-ucts of double base and plateau double base propellants in steady state combustion,and established a splitting decomposition model of intermediate products.
     该文分析了双基推进剂和平台双基推进剂稳态燃烧条件下燃烧表面分解初期产物的化学性质,建立了催化条件下中间产物裂解模型。
短句来源
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  相似匹配句对
     Combustion synthesis coating on steel plate surface
     钢板表面燃烧合成涂层
短句来源
     Method on predicting burning surface temperature of solid propellant
     固体推进剂燃烧表面温度的预估
短句来源
     Architecture Surface
     建筑表面
短句来源
     Smart Surface
     智能表面
短句来源
     combustion & heat transfer;
     燃烧和传热;
短句来源
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  burning surface
Some problems of a laminar boundary layer on a burning surface
      
Flameless-burning surface temperature of nitroglycerine powder
      
Oblique reflection of a plane sound wave from a burning surface
      
Study of stability and transition processes of formation of burning surface in a semiclosed volume with increased local rate of
      
Disruption mechanism for a layer of liquid at the burning surface of a gas-permeable system
      
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A new pressure-coupled response function of solid propellants has been theoretically derived by means of a combustion response model basing upon the steady-state burning model of composite solid propellants including those with negative pressure-exponents. In this combustion response model, the burning surface of a given propellant is divided into two parts, namely, one consisting of a region of the AP surface covered by molten binder with the corresponding binder surface and the other consisting of a region...

A new pressure-coupled response function of solid propellants has been theoretically derived by means of a combustion response model basing upon the steady-state burning model of composite solid propellants including those with negative pressure-exponents. In this combustion response model, the burning surface of a given propellant is divided into two parts, namely, one consisting of a region of the AP surface covered by molten binder with the corresponding binder surface and the other consisting of a region of the AP surface uncovered by molten binder with the remaining binder surface. In analyzing the part of AP surface covered by molten binder, the condensed-phase reaction and the opposed gasification of covered AP are considered. For plateau and mesa propellants, the real part of the pressure-coupled response function may be positive. The results calculated by the derived pressure-coupled response function for the S04-5A propellant are in reasonable agreement with the instability behavior observed experimentally. When the greater part of the burning surface is covered with the molten binder, the nonsteady state combustion can also occur. The combustion response model can be used not only to explain the instability behaviors of the plateau and mesa propellants, in contrast to the pressure-coupled response functions presented by previous investigators, but also to show that the steady-state burning model developed for composite solid propellants including those with negative pressure-exponents is reasonable and acceptable.

根据呈正、负压力指数燃速特性的固体推进剂的稳态燃烧模型,导出了一个新的压力响应函数公式,它可用来说明燃速压力指数为零、正、负各类推进剂的压力耦合现象。燃烧中的推进剂被划分为两部份:一部份是由熔化了的粘合剂所覆盖的氧化剂表面与其相对应的粘合剂表面所组成,而另一部份则由未被覆盖的氧化剂表面同剩下的粘合剂表面组成。与以往的各类模型不同,在上述的前一部份燃烧表面的燃烧中,考虑了氧化剂在熔化粘合剂覆盖的条件下存在着反向气化和凝相反应,故使所得的压力响应函数的实部在推进剂稳态燃速的压力指数为零或负值时也可为正值。利用所获得的压力响应函数的表达式对试验用推进剂(S04-5A)作了定量计算,计算结果满意地说明了,负压力指数推进剂在氧化剂被熔化粘合剂大面积复盖时也存在不稳定燃烧的现象。这不仅克服了以往所有压力响应函数表达式均难以用于负压力指数推进剂的缺陷,而且也从一个侧面反映了呈正、负压力指数燃速特性的固体推进剂稳态燃烧模型的正确性。

The combustion of solid rocket-propellant is successfully investigated by means of. high-speed real-time holographic interferometer photography.The high temperature reaction centre above the burning surface of the double base propellants and its variety regulation are found. In the case of catalyzed double base propellant, the number of high temperature reaction centres increases, while the surface temperature is not significantly changed; but the temperature gradient of the gas. zone riear the burning surface...

The combustion of solid rocket-propellant is successfully investigated by means of. high-speed real-time holographic interferometer photography.The high temperature reaction centre above the burning surface of the double base propellants and its variety regulation are found. In the case of catalyzed double base propellant, the number of high temperature reaction centres increases, while the surface temperature is not significantly changed; but the temperature gradient of the gas. zone riear the burning surface is seen to have increases. This is the reason of increased burning rate. The reason of mesa burning is that a great quantity of carbon particles fly from the burning surface.

本文用高速实时全息干涉摄影来研究固体火箭推进剂的燃烧,并获得成功。实验发现了双基推进剂燃烧表面上方高温反应中心的存在和变化规律。平台双基推进剂的高温反应中心数增加,表面温度变化不大,但表面附近气相区温度梯度上升,这些是产生超速燃烧的原因。大量碳片飞离燃烧表面是产生麦撒燃烧的原因。

Application of x-ray pnotoelectron spectroscopy (XPS) to the study of composite solid propellant combustion mechanism is presented in the paper.For polyur-ethane propellants, XPS has been successfully used to determine the atomic con-centrantion and to analyze the chemical combination valency states of the elements on the surface unburned or extinquished by rapid depressurization at various pressures.The experimental results indicate that the additon CaCO3 reacts with AP to form CaCl2 in condensate phase during...

Application of x-ray pnotoelectron spectroscopy (XPS) to the study of composite solid propellant combustion mechanism is presented in the paper.For polyur-ethane propellants, XPS has been successfully used to determine the atomic con-centrantion and to analyze the chemical combination valency states of the elements on the surface unburned or extinquished by rapid depressurization at various pressures.The experimental results indicate that the additon CaCO3 reacts with AP to form CaCl2 in condensate phase during combustion and that the covering of the melten binder over AP surface increased with pressure.The effects of CaCO3 and melten binder covering on the combustion mechanism are also discussed.

本文介绍了X光电子能谱(XPS)分析技术在复合固体推进剂燃烧机理研究中的应用。用XPS分析对一种呈负压力指数燃烧特性的聚氨酯复合固体推进剂(404-5A)的未然表面和在2、2.5、3.0、3.5、4.0MPa压强下快速降压熄火后的燃烧表面作元素组成及其化学价态的分析,得到了不同价态的各元素原子百分含量。从实验结果可以确定CaCO_3在凝相反应中生成了CaCl_2。从燃面上碳原子浓度随燃烧压强的变化说明了燃烧过程中存在着熔化的粘合剂对过氯酸铵表面的流动覆盖,覆盖程度随着燃烧压强的上升而增加。本文还对CaCO_3、粘合剂流动覆盖在燃烧过程中的作用进行了探讨。

 
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