Lets start this way. In the 15th century A man named Leonardo davinci first proposed the working principles of the helicopter But never built one. Not until the 20th century did a Russian engineer build the first controllable helicopter. Since then helicopters have filled the skies like dragon flies. But you asked why were helicopters invented? I don't think any one for sure knew why davinci was cgurious enough to think about it but its better we consider its advantages than reason for being invented. The helicopter has the ability to fly at altitudes practically impossible for any aeroplane,secondly it can land just about any were: field,water,mountains,farms and anywere else an aeroplane cant get to at low speeds. It can suspend itself in air for as long as its engine can bare and within its weight limit. Some can even hover backwards. See it has greater advantages than the aeroplane over short distances and difficult terrains. Find out the rest
Igor Sikorsky got the idea of an aircraft that could take off and land without a runway in the mid 1930s and figured out how and built it just before WW2.
Nobody invented the helicopter in 1918
Igor Sikorsky invented the helicopter.
no
Igor Sikorski invented helicopter in the year 1906.
No. The submarine came about long before the helicopter.
I am wondering where was helicopter invented?
Nobody invented the helicopter in 1918
An engineer, Igor Sikorski, invented the helicopter.
No African American invented the helicopter. The first practical helicopter was invented by Igor Sikorski, a Russian American.
Igor Sikorsky invented the first practical helicopter around 1940
Igor Sikorsky invented the helicopter.
no
Igor Sikorski invented the first practical flying helicopter.
J. T awston invented the helicopter (black male)
Igor Sikorski, a Russian born American, invented the first practical helicopter.
That is Igor Sikorski, and he was in his 40 's when he invented the first practical helicopter.
The first practical helicopter was invented about 1942