[军事]战斗机突破音障的绚丽瞬间(转载)
飞行器在速度达到音速左右时，会有一股强大的阻力，使飞行器产生强烈的振荡，速度衰减。这一现象被俗称为音障。当飞行器突破这一障碍后，整个世界都安静了，一切声音全被抛在了身后！那个白的东西，就是在突破音障的一瞬间，由于空气气流的不均衡搅动产生的，一般情况下是看不到的，所以才珍贵。<BR><img src="attachments/dvbbs/2006-5/2006521293086117.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2006-5/2006521293086117.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR><img src="attachments/dvbbs/2006-5/2006521294148808.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2006-5/2006521294148808.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR><img src="attachments/dvbbs/2006-5/2006521295049940.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2006-5/2006521295049940.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR><img src="attachments/dvbbs/2006-5/20065212102116445.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2006-5/20065212102116445.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR><img src="attachments/dvbbs/2006-5/20065212102116065.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2006-5/20065212102116065.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR>这是因为刚突破音障时飞机前部的空气受到剧烈的挤压产生高温，当这些空气流动到飞机中后部后，（飞机在高速飞行时其后部产生的气压要比正常的大气压值底很多倍）忽然压力剧烈下降而产生的细微雾状水颗粒。其实就和高速喷气飞机飞到大约 26万英尺时发动机后部拖着一条长长的白雾尾巴差不多！<BR> 长知识了~~~ 那一团是什么啊? 厉害！:time: :time: :time: :time: :victory: :victory: :victory: :victory: :victory: 厉害，不是一般的厉害，二般的 照片拍的太好了有水平。:victory: :victory: :victory: :victory: :victory:
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