飛行機が飛ぶとき、翼の上側の方が下側より空気の流れが速くなり、空気の圧力は逆に下側の方が上側より大きくなります。この圧力の差が主翼を押し上げる力、すなわち揚力となります。巨大な風洞実験装置に入って、断面を翼の形にしたウレタン製の板で、揚力を体感することができます。 When a plane is flying, the air above the wing moves faster than the air below it, and the pressure from below becomes higher than that from above. This difference in pressure, also called “lift,” pushes the plane up into the air. In this wind tunnel you’ll be able to feel for yourself the effect of the air as it moves over a wing.