Overrun Area - Overrun Area

Japanese: オーバーランエリア - おーばーらんえりあ
Overrun Area - Overrun Area

…Of these, the parallel runway arrangement of = and = is a type that can be expected to have high throughput in a relatively small space, but in order for takeoffs and landings to occur simultaneously on both parallel runways, they must be spaced at least 1,500 meters apart for safety reasons, and efficiency decreases if the space is too narrow. At both ends of the runway, there are extensions of about 50 to 150 meters called overrun areas to prepare for aircraft overruns. Recently, in order to improve drainage and braking effects on the runway, it has become common to cut thin horizontal grooves into the surface. …

*Some of the terminology that refers to the "overrun area" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…このうち=形や形の併行配置は比較的わずかなスペースで高い処理能力が期待できる形式であるが,併行する両滑走路で同時に発着を行うためには,安全上1500m以上の間隔をとって設置する必要があり,間隔が狭い場合には効率が低下する。滑走路の両端には航空機のオーバーランに備えてそれぞれ50~150m程度の過走帯(オーバーランエリアoverrun area)と呼ばれる延長部分が設けられている。最近では滑走路の排水をよくして制動効果を高めるため,表面に横方向の細い溝を切るグルービング加工を施すことが多くなった。…

※「オーバーランエリア」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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