In a Y7 test airplane, the cabin noise is analogized by an exciter to structure-borne noise and by a loudspeaker to air-borne noise.
在一架运七试验机上，激振器和扬声器分别被用来模拟由螺桨旋转在舱内引起的结构和气动噪声。
On the basis of optimal material parameter, a simulated fatigue test was conducted on a Y7 airplane stringer joint. The effects of irradiant parameter on fatigue life was studied.
在材料激光辐照参数优选的基础上，对Y7机长桁接头进行了辐照处理，并进行了模拟疲劳实验，研究了辐照参量对疲劳寿命的影响。
A type of loop antenna used for Y7-200A airplane is given. The antenna is located on the front edge of the vertical stabilizer. It is conformal with the configuration of the plane.
给出了一种用于Y7 2 0 0A运输机的隐蔽式短波天线，该天线为位于飞机垂尾前缘的回线天线，与飞机的外形共形，不影响飞机的飞行性能。
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