4 June : Dream flight in a hot air balloon

I am sure some of you must have already tried this and others have a mention in their ’To do list’ of trying this once in a lifetime.

The hot air balloon is the first successful human-carrying flight technology. 

A model of the Montgolfier brothers' balloon at the London Science Museum
A model of the Montgolfier brothers’ balloon at the London Science Museum

This style of balloon was developed by the Montgolfier brothers, and had its first public demonstration on 4 June 1783 with an unmanned flight lasting 10 minutes, followed later that year with manned flights.
The first manned hot air balloon flight was performed by Jean-François Pilatre de Rozier and Francois Laurent d’Arlandes on November 21, 1783, in Paris, France,

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The technique :
A hot air balloon consists of a bag called the envelope that is capable of containing heated air. Suspended beneath is a gondola or wicker basket which carries passengers and a source of heat, in most cases an open flame. The heated air inside the envelope makes it buoyant since it has a lower density than the relatively cold air outside the envelope. As with all aircraft, hot air balloons cannot fly beyond the atmosphere. Unlike gas balloons, the envelope does not have to be sealed at the bottom since the air near the bottom of the envelope is at the same pressure as the air surrounding. For modern sport balloons, the envelope is generally made from nylon fabric and the inlet of the balloon, closest to the burner flame is made from fire resistant material such as Nomex.

#Hindi 
हवा में ऊंची उड़ान… पंख फैलाकर पक्षियों की तरह तो कभी टेक्नोल़जी के पंखों से उड़ने वाले हवाई जहाज की तरह… लेकिन एक और नायाब तरीका है जिससे इंसान आसनाम में उड़ने की अपनी ख्वाहिश को पूरा करता है… और वो है हॉट एयर बैलून… यानी हवा में उड़ने वाला बड़ा सा गुब्बारा… आज पहली बार Montgolfier brothers ने 234 साल पहले हवा में आग वाला गुब्बारा उड़ाया था। पहले तो इसे बिना इंसान के ही उड़ाया गया था, जो करीब 10 मिनट तक हवा में रहा। 1783 के अंत में ही Montgolfier brothers ने इंसान वाला गुब्बारा भी हवा में उड़ाया। 21 नवंबर 1783 को Jean-François Pilatre de Rozier और Francois Laurent d’Arlandes ने फ्रांस में ये उड़ान भरी।