A plate hinged to the upper surface of the wing of an aircraft with low air resistance, such as a jet plane or glider. It is also called a spoiler. By opening it manually or hydraulically, it spoils the generation of lift in that area, allowing the flight altitude and descent rate to be changed, the landing and approach course to be adjusted, and the wheel brakes to be used to shorten the runway distance after landing or when the takeoff is aborted. Since spoiling the generation of lift also increases air resistance, it can be opened simultaneously on both sides to act as a speed brake, and by moving the left and right sides separately in conjunction with the ailerons, it is possible to turn without twisting the wings. This allows the area of the ailerons to be reduced, allowing the flap area to be increased, improving takeoff and landing performance. [Kazuo Ochiai] [Reference] |Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
ジェット機やグライダーなど空気抵抗の少ない航空機の翼の上面にヒンジ止めされた板。阻害板(そがいばん)ともいう。これを人力や油圧などで開くことにより、その部分の揚力の発生を阻害(スポイル)して、飛行高度や降下率を変えたり、着陸・進入コースを調整したり、着陸後や離陸中止の際の滑走距離を短くするとき車輪ブレーキの働きを助ける。また揚力の発生の阻害と同時に空気抵抗も増すので、左右同時に開いてスピードブレーキの役目を果たすとともに、補助翼と連動させて左右別々に動かすことによって翼にねじりを与えることなく旋回を行わせることができる。このため補助翼の面積を小さくできるのでフラップ面積が大きくとれ、離着陸性能を向上できる。 [落合一夫] [参照項目] |出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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