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自古以来,人们就希望能象鸟儿一样在室中自由飞翔。随着科学技术的发展,近年来在美国出现的室内飞行运动,使人类的梦想变成了现实。这种飞行运动是在室内飞行馆中进行的。飞行馆由三层八角形结构组成,最里面是飞行室,宽六米。下面有一架直径四米的D—4飞机三叶螺旋浆,由一台六百马力电动机带动,转速每分钟1200转,产生的风速可达每小时一千公里。飞行室地面是两层粗钢丝网结构,能使螺旋浆产生的气流通过,产生上升力,并保护飞行者。天花板也是一层钢丝网,可阻挡飞行者
Since ancient times, people wanted to fly freely in the room like a bird. With the development of science and technology, the indoor flight movement that has emerged in the United States in recent years has made the dream of mankind a reality. This flight is carried out in an indoor flight hall. Flying Museum consists of three octagonal structure, the innermost flight room, six meters wide. Below a four-meter-diameter D-4 three-lobed propeller, driven by a 600-horsepower motor at 1200 rpm, produces winds of up to 1,000 kilometers an hour. The floor of the flight room is a two-story coarse steel wire mesh structure that allows airflow through the propeller to pass through to create ascending force and protect the pilot. The ceiling is also a layer of steel mesh that blocks the pilot