BREAKING NEWS: NO FLIGHT UNTIL 2016
Despite the hard work of the Solar Impulse team to repair the batteries which overheated in the record breaking oceanic flight from Nagoya to Hawaii, the solar powered airplane of Bertrand Piccard and André Borschberg will stay in Hawaii until early spring 2016.
Following the longest and most difficult leg of the round-the-world journey which lasted 5 days and 5 nights (117 hours and 52 minutes), Solar Impulse will undergo maintenance repairs
on the batteries due to damages brought about by overheating
During the first ascent on day one of the flight from Nagoya to Hawaii, the battery temperature increased due to a high climb rate and an over insulation
of the gondolas. And while the Mission Team was monitoring this very closely during the flight, there was no way to decrease the temperature for the remaining duration as each daily cycle requires an ascent to 28’000 feet and descent for optimal energy management.
Overall the airplane performed very well during the flight. The damage to the batteries is not a technical failure or a weakness in the technology but rather an evaluation error in terms of the profile of the mission and the cooling
design specifications of the batteries. The temperature of the batteries in a quick ascent / descent in tropical climates was not properly anticipated.
Irreversible damage to certain parts
of the batteries will require repairs
which will take several months. In parallel, the Solar Impulse engineering team will be studying various options for better cooling
processes for very long flights.
The University of Hawaii with the support of the Department of Transportation will host the airplane in its hangar at Kalaeloa airport
. Post-maintenance check flights will start in 2016 to test the new battery heating
and cooling systems. The Round-The-World mission will resume early April from Hawaii to the USA West Coast
. From there Solar Impulse will cross the USA to JFK in New York
before making the Atlantic crossing to Europe
and then returning the point of departure in Abu Dhabi.
Solar Impulse is attempting a historic first of flying around the world only on solar energy. And while Solar Impulse has completed 8 legs, covering nearly half of the journey, setbacks are part of the challenges of a project
which is pushing technological boundaries to the limits. Solar Impulse will try to complete the first ever round-the-world solar flight in 2016 and this delay will in no way influence the overall objectives of this pioneering endeavour
Solar Impulse RTW - 8th Leg from Nagoya to Hawaii