Thermally choked operation in a 25-mm-bore ram accelerator
Thermally choked operation in a 25-mm-bore ram accelerator
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25 毫米孔径冲压加速器中的热阻操作
DOI：
10.1007/978-3-642-46876-6_10
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
K. Takayama
中科院分区：
文献类型：
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作者：
A. Sasoh;S. Hirakata;J. Maemura;Y. Hamate;K. Takayama
在东北大学流体科学研究所冲击波研究中心安装了25 mm口径冲压加速器（RAMAC 25）系统。冲压加速管的总长度为6米。它使用火药枪作为预加速器。推进剂混合物通过由质量流量控制器和背压调节器组成的系统供应。压力信号通过多路复用器系统记录，从而节省数据存储设备的通道数量。通过改变预加速器中无烟火药的加入量、混合物的组成和压力、预加速器发射管内的初始压力、弹托和弹盘的设计、膜片的厚度等进行了试验研究，实现了甲烷基混合物的冲压加速。文中给出了运行实验的结果。
The system of a 25-mm-bore ram accelerator (RAMAC25) was installed at Shock Wave Research Center, Institute of Fluid Science, Tohoku University. The total length of the ram acceleration tube is 6 m. It uses a powder gun as a pre-accelerator. The propellant mixture is supplied through a system composed of mass flow controllers and backpressure regulators. Pressure signals are recorded through multiplexer systems, thereby saving the number of channels of the data storage device. Experimental study was conducted, changing the amount of the smokeless powder in the pre-accelerator, the component and pressure of the mixture, the initial pressure in the launch tube of the pre-accelerator, the design of the sabot and disk, and the thickness of the diaphragm etc. Ram acceleration was realized using a methane-based mixture. Results of the operation experiments are presented here.