Generali Arctic Observer - Journal de bord
 
Generali Arctic Observer - Journal de bord
04.26.10 The chart showing the altitude and speed Journal de bord - Diaporama
04.26.10 Simulating the arrival trajectory in Siberia Journal de bord - Diaporama
04.26.10 Dangerous crossing Journal de bord - Diaporama
04.16.10 Conclusion to the Generali Arctic Observer mission
04.15.10 Jean-Louis Etienne back in France, with a press conference planned for 2 tomorrow afternoon (friday) Journal de bord - Vidéo
04.12.10 A day-by-day account of the Arctic crossing by balloon Journal de bord - Vidéo
04.11.10 Jean-Louis Etienne recovered by his team Journal de bord - DiaporamaJournal de bord - Vidéo
04.10.10 Jean-Louis Etienne: I am in Sakha in the middle of nowhere
04.09.10 Jean-Louis Etienne flying over Siberia
04.08.10 Jean-Louis Etienne on his way to Siberia Journal de bord - Vidéo
Generali Arctic Observer - Journal de bord
 
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The chart showing the altitude and speed
April 26 2010
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The chart showing the altitude and speed of the balloon using data recorded during the flight illustrates the problems encountered by the expedition.

N.B. in particular:
- the long flight at low altitude (some sixty consecutive hours at an altitude of less than 300 m, sometimes less than 100 m), requiring constant vigilance, which made it impossible to sleep for more than a few minutes.
- strong, turbulent winds: 21 consecutive hours of winds blowing at more than 50 km/hr (force 7), with 3 hours at around 90 km/hr (45 knots, force 9-0) when the balloon was at low altitude. The winds were accompanied by turbulence that caused the balloon to rise very high and then fall just as violently (the variometre blocked at 5-6 metres per second).
- rapid, major altitude variations, with about ten hours of flight time at an altitude of more than 5,000 m, at a pressure equal to half the atmospheric pressure on the ground and the need to use artificial oxygen.


Generali Arctic Observer - Journal de bord › La représentation graphique de l'altitude et de la vitesse