Leonardo Da Vinci draw his Helical Air Screw	1480
	Jump to Pioneers Page
Paul Cornu First to take off vertically with its pilot and make a free flight entirely without assistance from the ground	1907
	1911	Boris Yuriev Publish his abtomat perekosa (collective)
Oehmichen First kilometer in close circuit flight for an helicopter : 7 minutes, 40 seconds	1924	Sikorsky Aero Engineering Corp
	1930	Juan de La Cierva invented the hinged, flapping rotor blade
Focke-Wulf Fw 61 First practical Helicopter	1936	Kamov A-7 Autogiro
Weir W.6 First with two seats	1939	Sikorsky VS-300
Flettner Fl-282	1942	Stabilizing Bar Arthur Young 's Bell 30
Hiller XH-44	1943	First USCG helo detachment
	Jump to Up to 50s Page
Piasecki PV 3 First world's successful tandem-rotor helicopter	1945	Founded Kaman Aircraft
Research of helos powered with ram-jets mounted at the tips of the rotor blades	1946	Bell 47 First World's certified civil helo
Mil Bureau established	1948
	Jump to the 50s Page
Convertiplanes and then tiltrotors research begin	1950	MASH units deploys helos in Korea
Sikorsky S-55 First world's certified commercial transport	1951	Kaman K-225 First turbine gas powered helicopter
	1952	Agusta Spa.
Sud Aviation Alouette II First world's turbine helo to be produced	1955	Bell XV-3
Kaman QH-43 First world's remotely piloted vehicle	1957	Mil Mi-6 Hook
	Jump to the 60s Page
	1960	Sikorsky S-61
Mil Mi-8 Hip	1961
	1963	Hueys in Vietnam
AH-1 Cobra	1965
Merger of Mc Donnell & Douglas	1966	OH-6 Cayuse Major distance
Mil Mi-12 Homer Largest helo yet flown	1968
	Jump to the 70s Page
Mil Mi-24 Hind	1970	French industries joined in Aerospatiale
	1972	Aerospatiale Lama Major altitude
Robinson R-22	1973
	1975	Agusta A109
Mil Mi-26 Halo Biggest operational helo	1977
	1979	Bell XV-15
	Jump to Since 80s Page
MD 500 NOTAR	1983
	1984	Kamov Ka-50 Hokum
AH-64 Apache deliveries begun	1985
	1989	V-22 Osprey
Ultrasports Helicopters	1993
	1995	Eurocopter NH90