This tunnel is, in substance, a simple air flow bench with necessary test devices offering various controlled streams for experiments.
这种风洞实质上是一种简单的气流试验台,它通过配套的设备能为实验提供各种可控制的气流。
2
One of the main works to development ram air parawing with high performance is to research its aerodynamic characteristics, and the wind tunneltest technique is usually been taken.