Wind Tunnels

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forces acting on the model.

Types of Wind Tunnels

There are four basic types of wind tunnels. Which are low subsonic,
transonic, supersonic, and hypersonic. The wind tunnels are classified by the
amount of speed they can produce. The subsonic has a speed lower then the speed
of sound. The transonic has a speed which is about equal to the speed of sound
(Mach 1 760 miles per hour at sea level). . The supersonic (Mach 2.75 to 4.96)
has a speed of about five times the speed of sound And the fasts of them all the
hypersonic (Mach39.5) which has a speed of more then 30,000 miles per hour.

Wind Tunnel Test

There are basically two types of wind tunnel test which are static
stability and the pressure test. With these two test you can determine the
aerodynamic characteristics of the aircraft. The static stability test the
measures the forces moments due to the external characteristic. These forces
include axial, side and normal force, rolling, pitching and yawing moment. ...

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on there is another
explosive charge that simultaneously pushes gas into the tunnel from the other
direction. There is also a wind tunnel at the Lewis Flight Propulsion Laboratory
also own by NASA in Cleveland, Ohio, can test full-size jet engines at air
velocities of up to 2,400mph (3860km/h) and at altitudes of up to 100,000ft
(30,500m).

Benefits of the Wind Tunnel

There are many benefits that one can gain in using a wind tunnel. Since
designing an airplane is a long and complicated process and an expensive one as
well. With the wind tunnel you can build models and test them at a fraction of
the price compared to making the real thing. When designing an airplane one has
to ...

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