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Helicopter

en.wikipedia.org/wiki/Helicopter

A helicopter is a type of rotorcraft in which lift and thrust are supplied by rotors. This allows the .... The Danish inventor Jacob Ellehammer built the Ellehammer helicopter in 1912. It consisted ...

World's First Helicopter – Today in History: September 14 ...

connecticuthistory.org/worlds-first-helicopter-today-in-history/

On September 14, 1939, the VS-300, the world's first practical helicopter, took flight at Stratford, ... Categories: Igor Sikorsky, Invention and Technology, Stratford.

How does a helicopter work? | Who invented helicopters?

www.explainthatstuff.com/helicopter.html

May 4, 2016 ... A simple introduction to how helicopters work. How do spinning rotor blades act like airfoils and why do helicopters need a tail rotor?

www.ask.com/youtube?q=Who Invented the Helicopter&v=FPF9OP7Jync
Jan 6, 2012 ... World's First Helicopters - The Good, The Bad and The Sheer Dangerous! using ... Who invented the tail-rotor to stop the airframe rotating?.
www.ask.com/youtube?q=Who Invented the Helicopter&v=H5Bwu8-CNsY
Dec 16, 2013 ... Igor Sikorsky is considered to be the "father" of helicopters not because he invented the first. He is called that because he invented the first ...

Helicopters - 1930/1945 - Helicopter History Site

www.helis.com/pioneers/1930.php

History of Helicopter Helicopters - 1930/1945. ... and Hydrodynamic Central Institute 's vertical flight department was created in 1928 leaded by G. H. Sabinin .

The History of Helicopters - Back

www.aviastar.org/history/

On the other hand the helicopter, that unique and most youthful of all aerial transports, ..... The English inventor's helicopter was a substantial contribution to the ...

Who invented the first helicopter? - Ask.com

www.ask.com/history/invented-first-helicopter-69eedff1a9f3eac5

The VS-300, the world's first functioning helicopter, was invented by Igor Sikorsky . The patent was granted to Sikorsky on March 19, 1935, following his initial ...

Leonardo da Vinci's Aerial Screw Invention

www.da-vinci-inventions.com/aerial-screw.aspx

Nearly four hundred years before the invention of the helicopter, Leonardo da Vinci invented a flying machine that used a revolving platform to gain flight.

Igor Sikorsky and the Helicopter

www.asme.org/engineering-topics/articles/aerospace-defense/igor-sikorsky-aviation-pioneer

Ivan Sikorsky contributed much more to the aviation industry than the helicopter he is best known for.

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History of the Helicopter and Igor Sikorsky - Inventors - About.com

inventors.about.com

During the mid 1500's, Italian inventor Leonardo Da Vinci made drawings of an ornithopter flying machine that some experts say inspired the modern day ...

A History of the Helicopter | Prime Industries

primeindustriesusa.com

Aug 31, 2015 ... the history of the helicopter is said by many to have started with an ingenious drawing by 15<sup>th</sup> century painter and inventor, Leonardo da Vinci.

Igor Sikorsky - Engineer, Inventor - Biography.com

www.biography.com

Pioneering aeronautic engineer Igor Sikorsky built the world's first working helicopter. Learn more at Biography.com.