blowdown tunnel

blowdown tunnel

[′blō‚dau̇n ‚tən·əl]
(aerospace engineering)
A wind tunnel in which stored compressed gas is allowed to expand through a test section to provide a stream of gas or air for model testing.

blowdown tunnel

A type of wind tunnel in which stored compressed gas is allowed to expand through a test section to provide a stream of gas or air for model testing. The downstream side may or may not be reduced in pressure to provide greater expansion potential.
References in periodicals archive ?
The simplest one of these is the blowdown tunnel. This type of wind tunnel involves the expansion of high-pressure air from a high-pressure chamber.
Ground testing for flows up to Mach 12 will be possible in the next generation of auxiliary heated blowdown tunnels. However, there appears to be no means in the near term for ground simulation of flight in what is truly the hypervelocity regime (Mach [is greater than]10).