air horn

Test and Analysis on Acoustic Performance of Railway Locomotive Air Horn

铁道机车风笛声学性能试验研究

The portion of the carburetor air horn that reduces pressure to cause fuel to flow is called the venturi .

减少引起燃油流动压力的化油器空气喇叭口部分称为喉管。

According to air horn design theory , JQF low noise air horn device with partial acoustical enclosure has been designed .

按照声号筒设计原理，研究设计了JQF型低噪声局部隔声罩风笛装置。

The dual carburetor has a float bowl that partly surrounds the carburetor air horn .

双浮子气化器有一个浮子室，它局部环绕着化油器的空气室。

Aiming at investigating how the air horn and mounting angle affect a Pitot tube measurement , experiments were carried out on various Pitot tubes .

针对不同型号的皮托管进行了较系统的试验，旨在研究检测杆和安装角对皮托管测量的影响。

Thirdly , the measured values of an air horn with smaller diameter were hardly affected by the flow velocity even if there existed non-zero mounting angles .

较小管径检测杆的测量值存在非零安装角时，受流速的影响比较小。

I turn it on and open the screen , It 's an air horn , So if you lost at sea , you just ... Somebody ! ! !

我来开机打开屏幕这是一个气喇叭如果你在大海中迷失了你只需要来人啊！！！

The results show that , first of all , in the lower velocity measured , the diameter of an air horn had little influence on the total pressure and the measurement results had small errors compared with the reference values .

结果表明，在被测流速较低时，皮托管检测杆直径的大小对全压的测量影响较小，且测量值误差也较小；

Compare the acoustic characteristic with the different type of air horn . The measuring results showed that the air horn all produce 105 ~ 112 dB ( A ) of sound level at 30 meters directly in front of the train .

在大量的风笛试验测量基础上，比较了不同型号机车风笛的声学性能，试验结果表明：机车前方中心0°大约30m处的声级为105～112dB（A）；

Air tightness test and safety valve adjusting for main air receiver ( control air receiver , air horn receiver ) on board .

主空气瓶（制空气瓶、笛空气瓶）船后气密试验和安全阀的调整。