Study on Laser Ignition and Combustion Characteristics of Aluminum Hydride under Different Oxygen Content Atmospheres

被引：0

作者：

Jin L.-L. ^{[1
]}

Liu J.-Z. ^{[1
]}

Li H.-P. ^{[1
,2
]}

Wei M.-H. ^{[2
]}

Tang G. ^{[3
]}

Xu X.-X. ^{[3
]}

机构：

[1] Institute of Thermal Energy Engineering, Zhejiang University, Hangzhou

[2] Institute for Energy Studies, Hangzhou Dianzi University, Hangzhou

[3] Hubei Institute of Aerospace Chemical Technology, Xiangyang

来源：

Tuijin Jishu/Journal of Propulsion Technology | 2019年 / 40卷 / 06期

关键词：

Aluminum hydride; Combustion; Ignition; Laser; Oxygen content;

D O I：

10.13675/j.cnki.tjjs.180423

中图分类号：

学科分类号：

摘要：

As a new type of energetic material, aluminum hydride can significantly increase the specific impulse of solid propellants and has a broad development prospect. In order to fill the gap in the domestic research on aluminum hydride, the ignition and combustion experiment of aluminum hydride under different oxygen content atmospheres was carried out by using a laser ignition experimental bench. A fiber optic spectrometer, a high-speed camera and a two-color pyrometer were used to monitor the flame morphology, temperature changes and spectral data of the sample during ignition and combustion. Physical and chemical properties of combustion residues were analyzed. The results show that there is a phenomenon that the flame escapes from the sample during combustion. As the oxygen content in the atmosphere increases, the combustion strength increases, the maximum temperature increases from 1025.5℃ to 1350.0℃, the ignition delay time decreases from 22ms to 4ms, and the burning time first increases and then decreases. The morphology and composition of combustion residues in a high oxygen content atmosphere are very different from those in a low oxygen content atmosphere. The increase of oxygen content in the atmosphere can effectively promote the ignition and combustion of aluminum hydride. © 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.

引用

页码：1426 / 1432

页数：6

共 8 条

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