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Three Types of Aircraft



             The autogyro evolved from earlier models during this time. Two Cierva C.40 autogyros were used for Air Observation Post during World War I. Autogyros could neither hover nor descend vertically like the modern helicopter. Relying on forward motion, the autogyros's primitive engine lacked the power to run as efficiently as the helicopters. The government ended up choosing a joint Sikorsky-Vought effort to be funded, and the project evolved into the VS-300 model helicopter. It was an incredible advancement in helicopters, but others soon followed. .
             During the 1950s many new advancements in helicopters were made. Sikorsky crafted the world's first certified commercial transport helicopter. Another man named Hiller created the flying platform.
             The creation of the turbine engine advanced the helicopter's capabilities even further. The world's first turbine gas-powered engine was the Kaman K-225. Mc Donnell made the first successful helicopter with horizontal winged flight from a vertical rotor powered by the turbine engine. Helicopters were also used as weapons during this time. Many new helicopters appeared with missile capabilities. The new warfare helicopters, used infrared cameras to observe at night for better protection. This helicopter is still being utilized today.
             Mc Donnell continued to produce helicopters, the world's first commercial tiltrotor. Smaller helicopters were produced to fulfill the public's needs. The Ultrasport Helicopters and the Air Command International Commander 14/A are appreciable examples. Many helicopters used jet thrust rather than blades to give the directional stability, which made them extremely quiet.
             During the early 1990s helicopters were produced by large corporations. The Revolution Helicopter Corporation created a single-seat helicopter that can be built by a person at home in forty to sixty hours. The vertical flight of the helicopter is an advantage to the world.


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