An instrument landing system for airplanes is installed 7,000 meters from the end of the runway at an airport. Radio waves are emitted from the ground, and when a receiver on the plane receives this, a light comes on, letting the plane know that it is passing directly overhead, and showing the distance to the runway. Source: About Shogakukan Digital Daijisen Information | Legend |
飛行場の滑走路端から7000メートルの地点に設置される飛行機の計器着陸装置。地上から電波が発射され、機上の受信機がこれを受けるとランプがついて直上通過を知り、滑走路までの距離が分かる。
出典 小学館デジタル大辞泉について 情報 | 凡例 |
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