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Wind TunnelIn this report I will talk about the wind tunnel I will described what they are used forThedifferent types of wind tunnels from the slow speed subsonic to the high speed hypersonictunnelsI will also give A few examples of the wind tunnels used today The wind tunnel is a device used by many people from High school students to NASAengineers The wind tunnel is a device used to test planes to see how well it will dounder certainconditions The plane maybe as big as a full size 747 or as small as a match Tounderstand how awind tunnel is used to help in the designing process you have to know how a wind tunnelworks How Wind Tunnels WorkA wind tunnel is a machine used to fly aircrafts missiles engines and rockets onthe groundunder pre-set conditions With a wind tunnel you can chose the air speed pressurealtitude andtemperature to name a few things A wind tunnel is usually has a tube like appearance withwhichwind is produced by a large fan to flow over what they are testing plane missilesrockets etcora model of it The object in the wind tunnel is fixed and placed in the test section ofthe tunnel andinstruments are placed on the model to record the aerodynamic forces acting on the model Types of Wind TunnelsThere are four basic types of wind tunnels Which are low subsonic transonicsupersonic and hypersonic The wind tunnels are classified by the amount of speed theycanproduce The subsonic has a speed lower then the speed of sound The transonic has a speedwhich is about equal to the speed of sound Mach 1 760 miles per hour at sea level Thesupersonic Mach 275 to 496 has a speed of about five times the speed of sound And thefastsof them all the hypersonic Mach395 which has a speed of more then 30000 miles perhour Wind Tunnel TestThere are basically two types of wind tunnel test which are static stability
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