wind tunnel testing - A Tool of Aeronautics that involves placing a model of an aircraft or part of an aircraft into a wind tunnel and using instruments to gather data while air is blown by the model.
Wind Tunnel Pages Free Software Aeronautics Resources NASA Glenn Learning Technologies Home Page ...
Wind Tunnel: A chamber of tunnel shape in which experiments are made to collect aerodynamic data. A steady stream of air is blown through the tunnel by a large fan at a predetermined speed.
Wind tunnel tests for the aircraft design has been completed. The design was noted to be "workable and robust." [7]
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Northrop Grumman Switchblade ...
Wind tunnels are artificial machines that re-create wind conditions within various atmospheric levels. Essentially, if you want to test how an object would fly through space, you could place the...
Tips for Soldering RC Planes ...
Blowdown Wind Tunnel
An open-circuit wind tunnel in which gas stored under pressure is allowed to expand through a test section to provide a stream of gas or air to test a model.
(That is why one cannot hose the dust off of a car and why there is dust on the backside of the fans in a wind tunnel.) Just above the surface the fluid has some small velocity.
They made their wind tunnel 16 in. in diameter and created a powerful air blast through it by means of an engine-driven fan.
Because North American lacked a suitable wind tunnel, it was forced to use Curtiss' facility.
CL and CD are not expressed by any physical unit, they are rather absolute numbers obtained from either wind tunnel tests or derived mathematically.
Initially both CL and CD increase as the angle of attack increases.
With the help of their wind tunnel, they were able to carry out research that enabled them to develop a propeller that converted 66 per cent of the engine's power into forward thrust.
What made Wenham's findings so important is that he had measured them in his new invention, the wind tunnel, which he built in 1871 with John Browning.
Wind tunnel and flight tests have shown that frost, snow, and ice accumulations (on the leading edge or upper surface of the wing) no thicker or rougher than a piece of coarse sandpaper can reduce lift by 30 percent and increase drag up to 40 ...
The wing is stationary in the middle of the wind tunnel; air flows past it from left to right. A little ways upstream of the wing (near the left edge of the figure) I have arranged a number of smoke injectors.
The tricky part with icing is that only a small amount is needed to reduce lift in significant amounts. Wind tunnel and flight tests have shown that ice similar to coarse sandpaper can reduce lift by 30% and increase drag up to 40%.
They created a small wind tunnel in which they could measure the lift and drag of a wide variety of airfoils and airfoil combinations, a pursuit that interested them so intensely that they often worked at it around the clock.
This was not the case in scientific circles some 120 years ago, but now is common knowledge, and justifies the wind tunnel tests where true air flows over an airfoil and from which we can predict characteristics of an airplane moving through still ...
The only exceptions are those degrees, such as aeronautical engineering, computer science, and avionics technology, that require complex, comprehensive training facilities and equipment, such as wind tunnels or the airway science lab.
 See also: Wind, Wind t, Aircraft, Flight, Speed
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