三角翼滑翔机的“自由悬挂滑翔飞行”,一九六九年在美国旧金山附近的一座山岗上首次飞行成功,以后,每年都有几十万人次参加这项运动。参加悬挂飞行的人,把“三角翼”——几根铝合金管支撑的一块三角形尼龙布,绑在身上。带着“三角翼”猛跑几步,纵身跨下悬崖,三角翼带着人下滑几十米后,在热气流的作用下,徐徐上升,飞跃公路、沙漠、平原, Triangle Glider’s “Free Hang Gliding Flight” made its first flight in 1969 on a hill near San Francisco, USA, and hundreds of thousands of people participated in the sport every year. Participate in flying people, the “delta wing” - a few pieces of aluminum alloy tube support a piece of triangular nylon cloth, tied to the body. With the “delta wing” a few steps of speeding, plunge across the cliff, the delta wing with a few people down a few meters, under the effect of hot air, slowly rising, leaping roads, deserts, plains,