The VS-316, was developed from the famous experimental VS-300 helicopter, invented by Igor Sikorsky and publicly demonstrated in 1940. The VS-316 was designated the XR-4, under the United States Army Air Forces' series for ...
http://wiki.verkata.com/en/wiki/Sikorsky_R-4
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Credit of invention of helicopter goes to various inventors. However first working helicopter model was made by Focke Achgelis in 1936 in Germany. Look here for more information: http://en.wikipedia.org/wiki/Helicopter#History
http://answers.ask.com/Science/Physics/who_invented_the...
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Igor Sikorsky designed a helicopter (in 1925??) that reached full-scale production in 1942. Even though most previous designs used more than one main rotor, it was the single main rotor with antitorque tail rotor configuration of this desig...
http://wiki.answers.com/Q/Who_invented_the_helicopter
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Igor Sikorsky, 1942. There were some similar aircraft previous to 1942, but Sikorsky'sdesign is considered universally to be "the helicopter". See the related link.
http://wiki.answers.com/Q/Who_invented_the_helicopter_a...
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The very first piloted helicopter was invented by Paul Cornu in 1907, however, this design was not successful. French inventor, Etienne Oehmichen built and flew a helicopter one kilometer in 1924. Another early helicopter that flew for a decent distance was the German Focke-Wulf Fw 61, invented by an unknown inventor.
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inventors.about.com/od/hstartinventions/a/helicopter.ht...
inventors.about.com/od/hstartinventions/a/helicopter.htm
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The history of transportation and innovations in transportation. ... 3500 BC Fixed wheels on carts are invented - the first wheeled vehicles in history. Other early wheeled vehicles include the chariot. ... 1907 Very first helicopter - unsuccessful design...
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inventors.about.com/library/inventors/bl_history_of_tra...
inventors.about.com/library/inventors/bl_history_of_transportation.htm
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Helicopter - Wikipedia, the free encyclopedia
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A helicopter is an aircraft that is lifted and propelled by one or more horizontal rotors, each rotor consisting of two or more rotor blades. Helicopters are classified as rotorcraft or rotary-wing ...
en.wikipedia.org/wiki/Helicopter
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The helicopter history site traces the evolution of rotary wing aircraft back to Leonardo Da Vinci ... "A helicopter is an assembly of forty thousand loose pieces, flying more or less in formation"
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Leonardo da Vinci is made the first detailed drawings. But he didn't really understand the physics of how it would work. Long before da Vinci, the Chinese had come up with a child's toy that could hover briefly (using the energy from windin...
http://www.blurtit.com/q400035.html
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