SOLAR IMPULSE

             The solar impulse use to fly  270m² of solar panels for 600kg of battery lithium. The dimension of this plane is

6.37m on 22.4 m. For compensate the lack of power, the plane must have a lot of solar pannels so a big wing 

 The solar impulse uses the solar energy to fly. It was created to prove or to encourage the population to use the energy solar and other renewable energy. Their creator are Swiss, Bertrand Piccard et André Borschberg in the the Federal Institute of Technology Lausanne. 

               There are 4 motors of the plane of 17,5 CV electric motors while use 12.9 kw. For avoid using a lot of energy during the night, the plane comes down slightly to economies energy. In the plane, the lithium batteries allows of power all the plane, there are 4 batteries of 159 kilograms. It charges by solar panels 

In short, Solar Impulse's plane is: 

The wingspan of an Airbus A380, to minimize induced drag and provide maximum surface area for solar cells.  

The weight of a car, after tracking down every gram to build a superlative plane. 

 The power of a scooter, after optimization to the extreme of the entire energy chain. 

               Informations: 

Scale: 72,30 meters  

length: 22,40 meters 

Height: 6,37 meters 

Motorization: 4 motors of 17,5 CV electric motors (12,9 kW)  

Batteries: 4 x 260 Wh/kg, 633 kg for the total 

Solar cells: 17.248, 135 microns thick, 269,5 m2 

Cruses speed: 90 km/h at day, 60 km/h at night 6 

Maximal altitude cruise: 8.500 meters (27.900 ft) 

weight: two point thirty hundred tons (2300) kilos 

Takeoff speed: 35 km/h