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Solar Impulse 2: The Round-The-World Aircraft Is Completed

Today in Payerne Switzerland, Bertrand Piccard and André Borschberg launched Solar Impulse 2, their new single-seater solar aircraft designed to take up the challenge of the first round-the-world solar flight, without any fuel in 2015, reports the Solar Impulse team.

If you missed the presentation, you may view the video here.

Our Challenge Is To Attempt the First Round-The-World Solar Flight In 2015

solar impulse 2

Solar Impulse 2Official Presentation Preparation2014.08.04 | Photo: Righett | © Solar Impulse 

Solar Impulse is the product of an alliance between two men to fulfill a project deemed impossible by industry experts. While Bertrand Piccard, a psychiatrist and explorer, sourced partners to finance the project and promoted the cause for clean technologies (subsequently endorsed by many political authorities), engineer and entrepreneur André Borschberg brought together and led a technical team of 80.

A vision counts for nothing unless it is backed up by action. With 8 world records for Solar Impulse 1, the first solar aircraft capable of flying during the night, crossing two continents and flying over the United States, we have shown that clean technologies and renewable energies can accomplish the impossible. –A delighted Bertrand Piccard, Founder and Chairman of Solar Impulse.

It has taken 12 years of calculations, simulations, construction and testing to arrive at today’s launch of Solar Impulse 2 – the most revolutionary aircraft of out of time, set to fly around the world.

Now we need to go even further. Solar Impulse 2 will have virtually unlimited autonomy, and now we need to make sure the pilot is as sustainable as his aircraft. This is why the round-the-world flight will be as much a human as a technological feat. –André Borschberg, Co-Founder and CEO.

To complete the round-the-world flight, Solar Impulse 2 will have to accomplish what no other aircraft has achieved before: flying without fuel with only one pilot for 5 consecutive days and nights over oceans from one continent to another. This is the challenge for which the aircraft has been built.

Solar Impulse 2 Comparison to Boeing 747-81

Image courtesy of Solar Impulse

The single-seater solar aircraft has a huge wingspan of 72 meters (236 ft) for its weight of just 2,300 Kg (5,000 lbs), producing an aerodynamic performance and energy efficiency greater than anything to date. There is a 3.8 m3 cockpit, every detail of which has been designed for a pilot to live there for a week. However, for the sake of maximum energy efficiency, the cabin is not pressurized or heated – a further endurance challenge for the pilot.

Test flights are due to take place in May, followed by training flights over Switzerland.

The attempt to make the first round-the-world solar-powered flight is scheduled to start in March 2015 from the Gulf area. Solar Impulse will fly, in order, over the Arabian Sea, India, Burma, China, the Pacific Ocean, the United States, the Atlantic Ocean and Southern Europe or North Africa before closing the loop by returning to the departure point. Landings will be made every few days to change pilots and organize public events for governments, schools and universities.

By Amber Archangel

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  1. […] presentation of this second prototype in April will be followed by a programme of test flights and training at the aerodrome in Payerne. […]

  2. […] The chances of succeeding at the first attempt to build a solar airplane capable of flying around the world were judged to be slim, so a more rudimentary prototype, HB-SIA, was first constructed, reports Solar Impulse. Lessons learned from this prototype are incorporated in Solar Impulse 2, the Round-The-World Solar Airplane. […]

  3. […] that the objective for the Solar Impulse team was to build the most energy efficient airplane. Si2, the new aircraft, flies with a wing span larger than a 747, and weighs about 2 tons, which is […]