It is said that the beginning of inventing flying objects started on the 19th century. The goal to make a flying machine started with Otto Lilienthal who makes gliders and the one who created the book about the study of flight which is also know as AERODYNAMICS. Leonardo da vinci draw a sketch of a helicopter at his time and the first successful flying helicopter was designed by the Russian Igor Sikorsky in the late 1939.
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Nobody invented the helicopter in 1909
Yes, helicopters were used in WW1. Don't be silly, helicopters were invented towards the end of WWII.
Igor Sikorsky created the first successful helicopter
zeppelins were invented in the 1900 by Count Von Zeppelin.
What Was Life Like before The Helicopters Were Invented And So On The Is For My Project Research So Please Respond.