NEW YORK – The aircraft Solar Impulse 2 was soaring Monday over the Western Atlantic, one of the most difficult legs of its record-breaking bid to fly across the globe using only solar energy.
The plane, which took off from New York’s JFK airport at around 2:30 a.m. (0630 GMT), is piloted by Swiss adventurer Bertrand Piccard, who is expected to spend approximately 90 hours — during which he will take only short naps — crossing the Atlantic.
“It’s my first time taking off from JFK,” Piccard said over a live feed from the aircraft as he headed off into the night sky en route to Spain’s Seville Airport.
Several hours later, he posted on Twitter that despite a previous full moon there is “now a pink sky in front of me, the day is waking up.”
The voyage marks the first solo trans-Atlantic crossing in a solar-powered airplane and is expected to last four consecutive days and nights, depending on weather.
The plane, which is no heavier than a car but has the wingspan of a Boeing 747, is being flown on its 22,000-mile (35,000-km) trip in stages with two pilots Piccard and Swiss entrepreneur Andre Borschberg taking turns at the controls.
The pair have flown alternating legs of the journey, with Borschberg piloting the flight’s final Pacific stage, a 4,000-mile (6,437-km) flight between Japan and Hawaii.
The 118-hour leg smashed the previous record for the longest uninterrupted journey in aviation history.
The plane, now on the 15th leg of its east-west trip, set out on March 9, 2015, in Abu Dhabi, and has flown across Asia and the Pacific to the United States with the sun as its only source of power.
“Smooth takeoff and all #Si2 systems have been checked here at the Mission Control Center for the #Atlantic Crossing,” Borschberg posted on Twitter soon after Solar Impulse 2 was off the ground.
A few hours into the flight, which could be tracked via internet on thesolarimpulse.com website, the flight team wrote that the flight was blessed with “a beautiful day without a single cloud.”
In another post about seven hours into the flight, Piccard described spotting a cluster of whales in the ocean.
“What a beautiful sight of jumping whales. Just like the whales below me, #Si2 depends only on nature,” he wrote, as a live video feed on the website captured his every movement at the controls of the aircraft.
Prince Albert of Monaco, a patron of the project, gave the flight the go-ahead from its mission control center in Monaco, telling Piccard “you are released to proceed.”
Approximately a third of the journey still remains for the plane, which will fly through Europe and on to Abu Dhabi after crossing the Atlantic.
The single-seat aircraft is clad in 17,000 solar cells. During nighttime flights it runs on battery-stored power.
“Solar Impulse is like a flying smart grid, and if we can make it work in an airplane, where we can’t cheat, we can make it work on the ground, in our cities, for our homes and for all applications,” Borschberg said in a statement.
The plane typically travels at a mere 30 mph (48 kph), although its flight speed can double when exposed to full sunlight.
“Best of luck on this wonderful adventure @bertrandpiccard & all the team,” British billionaire entrepreneur Richard Branson, owner of space tourism company Virgin Galactic, posted on Twitter.
Piccard and Borschberg are no strangers to adventure.
Piccard, a psychiatrist, made the first nonstop balloon flight around the world in 1999. Meanwhile, Borschberg only narrowly escaped an avalanche 15 years ago and in 2013 survived a helicopter crash The airplane’s slow cruising speed, similar to that of a car, has required both men to take up meditation and hypnosis as part of training to stay alert for long periods.
Solar Impulse 2 is due to land sometime on Thursday in Spain or France, with the precise location to be determined later depending on weather conditions, said Elizabeth Banta, a spokeswoman for the project team.
The carbon-fiber, propeller-driven plane has four solar-powered engines and four batteries to store surplus energy. It weighs the same as a family car and can climb to 28,000 feet (8,500 m).
The team behind Solar Impulse — part of a campaign to build support for clean energy technologies — hopes to complete the circumnavigation in Abu Dhabi, where the journey began in March 2015.
Piccard and Borschberg completed a multiflight crossing of the United States with an earlier version of the plane in 2013.
Borschberg set an endurance record for the longest nonstop solo flight last July in a 118-hour trans-Pacific crossing from Japan to Hawaii.Source : http://www.japantimes.co.jp/news/2016/06/21/world/science-health-world/flying-smart-grid-solar-impulse-2-heads-out-over-atlantic/
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