Who invented the first practical helicopter and when?

Prof. Henrich Focke, a German inventor, devised the first practical helicopter called the Focke-Wulf Fw 16, which was successfully flown in 1936.  By 1938 it set many world records for altitude, speed and flight duration. It could be flown by a pilot after only one hour of pilot briefing.

#1936#1938#Altitude#Duration#Flight#Focke-Wulf Fw 16#German#Helicopter#Henrich Focke#Inventor#Pilot#Professor#Speed#World record

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