Wind Tunnels


In this report I will talk about the wind tunnel. I will described what they
are used for. The different types of from the slow speed subsonic
to the high speed hypersonic tunnels. I will also give A few examples of the
used today.
The wind tunnel is a device used by many people, from High school students
to NASA engineers. The wind tunnel is a device used to test planes to see how
well it will do under certain conditions. The plane maybe as big as a full size
747 or as small as a match. To understand how a wind tunnel is used to help in
the designing process you have to know how a wind tunnel works.

How Wind Tunnels Work

A wind tunnel is a machine used to fly aircraft's, ...

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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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"Wind Tunnels." Essayworld.com. Essayworld.com, 23 Dec. 2003. Web. 23 Sep. 2018. <http://www.essayworld.com/essays/Wind-Tunnels/321>
"Wind Tunnels." Essayworld.com. December 23, 2003. Accessed September 23, 2018. http://www.essayworld.com/essays/Wind-Tunnels/321.
"Wind Tunnels." Essayworld.com. December 23, 2003. Accessed September 23, 2018. http://www.essayworld.com/essays/Wind-Tunnels/321.
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PAPER DETAILS
Added: 12/23/2003 03:13:14 AM
Category: Science & Nature
Type: Premium Paper
Words: 1387
Pages: 6

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