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(Image: Solar Impulse)
This shows the wing span, 63.4 meters (208 feet) compared to a Airbus 340. Its length is 21.85 meters (71 feet), and height is 6.4 meters (20 feet). It runs on four brushless motors with 10hp per motor. The HB-S1B is powered by 10,748 solar cells on its wings and 880 on the horizontal stabilizer. It takes off at 44k/h (27mph), flies at 70k/h (44mph), and has a maximum cruising altitude of 8,500 meters (27,000 feet).