Robert brothers

Nicolas-Louis Robert
Nicolas-Louis Robert
	The world's first manned hydrogen balloon flight. 1783
Born	1760; Paris
Died	1820 (aged 59–60)
Other names	Marie-Noël Robert; Robert le Jeune; cadet the younger
Occupation(s)	Mechanical engineer, Balloonist
Known for	Builder of first hydrogen balloon; Builder of first manned hydrogen balloon; Co-pilot of first manned hydrogen balloon flight in 1783; Co-pilot of first balloon flight over 100km 1784

Anne-Jean Robert
Anne-Jean Robert
Born	1758; Paris
Died	1820 (aged 61–62); Paris
Other names	l'aîné, (the elder)
Occupation(s)	Mechanical engineer, Balloonist
Known for	Builder of first hydrogen balloon; Builder of first manned hydrogen balloon; Co-pilot of first balloon flight over 100km 1784

Les Frères Robert were two French brothers. Anne-Jean Robert (1758–1820) and Nicolas-Louis Robert (1760–1820) were the engineers who built the world's first hydrogen balloon for professor Jacques Charles,^[3] which flew from central Paris on 27 August 1783.^[1]^[4] They went on to build the world's first manned hydrogen balloon, and on 1 December 1783 Nicolas-Louis accompanied Jacques Charles on a 2-hour, 5-minute flight.^[1]^[5]^[4] Their barometer and thermometer made it the first balloon flight to provide meteorological measurements of the atmosphere above the Earth's surface.^[6]

The brothers subsequently experimented with an elongated elliptical shape for the hydrogen envelope in a balloon they attempted to power and steer by means of oars and umbrellas.^[1] In September 1784 the brothers flew 186 km from Paris to Beuvry, the world's first flight of more than 100 km.^[1]^[7]

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^ Chisholm 1911.
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[FOOTNOTEChisholm1911-3] Chisholm 1911.

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Anne-Jean Robert
Born	1758 (1758)^[1] Paris
Died	1820 (aged 61–62)^[1] Paris
Other names	l'aîné, (the elder)
Occupation(s)	Mechanical engineer, Balloonist
Known for	Builder of first hydrogen balloon Builder of first manned hydrogen balloon Co-pilot of first balloon flight over 100km 1784

Nicolas-Louis Robert
The world's first manned hydrogen balloon flight. 1783
Born	1760 (1760)^[1] Paris
Died	1820 (aged 59–60)^[1]
Other names	Marie-Noël Robert Robert le Jeune cadet the younger^[1]
Occupation(s)	Mechanical engineer, Balloonist
Known for	Builder of first hydrogen balloon Builder of first manned hydrogen balloon Co-pilot of first manned hydrogen balloon flight in 1783 Co-pilot of first balloon flight over 100km 1784^[2]