Question: When was the first helicopter made and flown?

context: Heinrich Focke at Focke-Wulf was licensed to produce the Cierva C.30 autogyro in 1933. Focke designed the world's first practical transverse twin-rotor helicopter, the Focke-Wulf Fw 61, which first flew on 26 June 1936. The Fw 61 broke all of the helicopter world records in 1937, demonstrating a flight envelope that had only previously been achieved by the autogyro.
question: When was the first transverse twin-rotor helicopter made and successfully flown?
short_answers: 26 June 1936
context: In 1906, two French brothers, Jacques and Louis Breguet, began experimenting with airfoils for helicopters. In 1907, those experiments resulted in the "Gyroplane No.1", possibly as the earliest known example of a quadcopter. Although there is some uncertainty about the date, sometime between 14 August and 29 September 1907, the Gyroplane No. 1 lifted its pilot into the air about for a minute. The Gyroplane No.1 proved to be extremely unsteady and required a man at each corner of the airframe to hold it steady. For this reason, the flights of the Gyroplane No.1 are considered to be the first manned flight of a helicopter, but not a free or untethered flight.
question: When was the first manned helicopter made and flown at a height of 2 ft for 1 minute?
short_answers: 1907
sometime between 14 August and 29 September 1907
context: That same year, fellow French inventor Paul Cornu designed and built the Cornu helicopter which used two counter-rotating rotors driven by a Antoinette engine. On 13 November 1907, it lifted its inventor to and remained aloft for 20 seconds. Even though this flight did not surpass the flight of the Gyroplane No. 1, it was reported to be the first truly free flight with a pilot. Cornu's helicopter completed a few more flights and achieved a height of nearly , but it proved to be unstable and was abandoned.
question: When was the first truly free helicopter made and flown with a pilot?
short_answers: 13 November 1907
context: No context provided
question: When was the first turbine-powered helicopter made and flown?
short_answers: 11 December 1951
context: No context provided
question: When was the first helicopter made?
short_answers: 1861
context: No context provided
question: When did the first helicopter fly?
short_answers: 1878

Answer: There are a number of helicopters, including twin-rotor, turbine-powered, manned, and truly free helicopters. The first helicopter was made in 1861, while the first helicopter flew in 1878. The first manned helicopter was made and flown at a height of 2 ft for 1 minute in 1907, and the first truly free helicopter was made and flown with a pilot on 13 November 1907. The first transverse twin-rotor helicopter was made and successfully flown on 26 June 1936, and the first turbine-powered helicopter was made and flown on 11 December 1951.