Wednesday, October 7, 2009
Air Travel (Summary)
These days most people like air travel, because it is fast, comfortable and safe means of journey. It takes a few hours to travel to a place thousand of kilometres away. But there is not much excitement in it because we can not see much of the world from the height at which aeroplanes fly.
Endeavours of fly have been made by man since long the first man who tried to fly was a Frenchman, Pilatre de Rozrer, who went up in a hot-air balloon on
The balloon flights were quite an important step towards the invention aeroplane. But balloons where found to be useless for his purpose unless they were made navigable. Mechanical power was needed for this purpose. An Englishman achieved remarkable success in this regard in 1848. He made an aeroplane fitted with a steam engine, but it proved too heavy to fly. In 1852 a Frenchman installed a steam engine in an airship but it also did not work swiftly. The French engineers Renard and Kerb used electric power in their airships, but batteries were too heavy.
The solution was provided by the invention of internal combustion engine in 1876 by a German named Otto. This piston – driven, engine worked on vaporized petrol. In 1886 Wolfert a German installed this engine in an airship, designed by count Vonzeppline whose first airship was manufactured in 1908. These airships were known as “Zeppelins”.
Developments in this regard continued in 1909 a Frenchman Bleriot designed an aeroplane and flew across the
Air ships were used for passenger services after First World War. But were abandoned due to unsafe conditions. The giant hanger at
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