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vertical wind tunnel
A vertical wind tunnel (VWT) is a wind tunnel which moves air up in a vertical column.
Although vertical wind tunnels have been built for aerodynamic research, the most high profile are those used as recreational wind tunnels, frequently advertised as "indoor skydiving" or bodyflight, which have also become a popular training tool for skydivers.
==Recreational vertical wind tunnels==
A recreational wind tunnel enables human beings to experience the sensation of flight without planes or parachutes, through the force of wind being generated vertically. Air moves upwards at approximately 195 km/h (120 mph or 55 m/s), the terminal velocity of a falling human body belly-downwards. A vertical wind tunnel is frequently called 'indoor skydiving' due to the popularity of vertical wind tunnels among skydivers, who report that the sensation is extremely similar to skydiving. The human body 'floats' in midair in a vertical wind tunnel, replicating the physics of 'body flight' or 'bodyflight' experienced during freefall.〔(, Discovery News Blog Post about Indoor Skydiving )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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