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The Ballon Generali is a tethered helium balloon, used as tourist attraction and advertising support. Installed in Paris since 1999 in the Parc André-Citroën, it was created and developed by the French company Aerophile SAS for the celebration of the year 2000. The balloon has lofted more than 500,000 passengers into the sky since its opening.〔(Ballon Air de Paris : Pour la première fois, la qualité de l'air est visible ), Official Website〕 == Operation == The balloon, filled with of helium, is attached to the ground with a cable, controlled by an hydroelectric winch. This tourist attraction can board up to 30 passengers (this amounts to around ) at above Paris. It is high, and has a diameter of .〔(Ballon de Paris ), dossier de presse 15 mai 2008〕 It has been used as advertising billboard for Fortis, then from 2002 for Eutelsat. In 2008, a partnership has been signed with Banque populaire and Airparif : renamed "ballon Air de Paris", its internal illumination system changes the outer colour in real-time, according to the ambient air pollution in Paris, measured by Airparif : from green (good) to red (bad) through orange (poor).〔(Le Ballon de Paris devient l’Observatoire Atmosphérique Generali )〕 This system was completed by an independent lighting (panels light-emitting diode, visible especially at night on the lower part of the shell) stating the air quality near traffic with the same colour code. On April 18, 2013, a brand new tethered helium balloon was introduced, renamed the "Ballon Generali" (the Italian insurance company Generali has entered partnership agreements to more than 14 years with the Mairie de Paris). Since that day, every year it lifts around visitors. The spectacle lasts around 10 minutes. In the morning, with optimal weather conditions, the Ballon Generali can reach the altitude of , making it the second highest point after the Eiffel Tower. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ballon Generali」の詳細全文を読む スポンサード リンク
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