aircraft - choose a jigsaw puzzle to solve

Aviation, or air transport , refers to the activities surrounding mechanical flight and the aircraft industry . Aircraft includes fixed- wing and rotary- wing types, morphable wings , wing -less lifting bodies, as well as lighter-than- air craft such as balloons and airships. Aviation began in the 18th century with the development of the hot air balloon , an apparatus capable of atmospheric displacement through buoyancy. Some of the most significant advancements in aviation technology came with the controlled gliding flying of Otto Lilienthal in 1896; then a largest step in significance came with the construction of the first powered airplane by the Wright brothers in the early 1900s. Since that time , aviation has been technologically revolutionized with the introduction of the jet which permitted a major form of transport throughout the world .