Solar Impulse plane has a wingspan the size of a Boeing 747
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A solar-powered plane with a 200-foot wingspan completed its first test flight this morning, soaring to 5,500 feet in an 87-minute sortie that reached a top speed of 44 mph. Solar Impulse proved itself airworthy, taking off and landing under its own power, taking a series of turns, and performing well. According to pilot Marcus Scherdel, "Despite its immense size and feather weight, the aircraft's controllability matches our expectations."Read More
