Wind Tunnel
A drawing of a fan blowing yellow strips of paper across a helicopter inside a wind tunnel

NASA tests aircraft in wind tunnels. Image Credit: NASA

      a tunnel area through which air is blown to check how air flows around an object (such as an airplane part or model) placed in the tunnel



Sentences:
Engineers found a problem when the airplane model was tested in the wind tunnel.

The Wright brothers tested their airplane in a wind tunnel before flying it.



More Information:
http://ksnn.larc.nasa.gov/webtext.cfm?unit=windtunnel   →
What Are Wind Tunnels? Grades K-4
What Are Wind Tunnels? Grades 5-8