论文部分内容阅读
爆炸快门是高速摄影机中的一种重要部件,它要在10~-6秒左右闸断光路以防止感光材料的重复曝光。快门的关闭速度与快门的通光口径和引爆雷管的个数及爆速有关。不同型式的高速摄影机要求不同速度和通光口径的爆炸快门。例如普通转镜分幅或扫描相机用的爆炸快门直径在40—50毫米时,通光孔切断时间约为10—15微秒,而转镜网格显微相机则要求通光孔径为5毫米,闸光时间越短越好,例如0.6微秒或更小。要设计某些新的爆炸快门,必须了解爆炸快门的机理,如雷管爆炸产生的冲击压力波的传播速
Explosion Shutter is a high-speed camera in an important component, it should shut off in about 10 ~ -6 seconds to prevent light exposure of repeated exposure. The closing speed of the shutter is related to the opening diameter of the shutter and the number of detonators and detonation speed. Different types of high-speed cameras require an explosion shutter with different speeds and clear aperture. For example, the general rotating mirror or scanning the camera with the explosion shutter diameter of 40-50 mm, the aperture cut-off time is about 10-15 microseconds, while the mirror grid microscopy is required clear aperture of 5 mm , The gate light time is as short as possible, such as 0.6 microseconds or less. To design some new explosion shutters, it is important to understand the mechanism of the explosion shutter, such as the propagation velocity of the impact pressure wave generated by the detonator explosion