Solar-powered plane concepts typically focus on high-efficiency glider-type designs, so as to make the best possible use of the limited power available from the sun. [rctestflight] wanted to try a ...

At 5,070 pounds, the plane weighs about as much as an SUV. Its wingspan is 236 feet, more than that of a Boeing 747. © Solar Impulse / Rezo.ch The lightweight Solar ...

Instead of just trying to slap solar panels to an existing plane, an airframe should ideally be designed from the ground up as a balancing act between a range of factors. These include weight ...