So the inflatable structure, created for an around-the-globe flight scheduled for 2015 but not yet used in real-world conditions, will be set up by the Solar Impulse ground team before the aircraft lands, 21 hours after today's takeoff. The hangar is a water-proof, fire-proof structure that can handle battering from winds up to 62 mph. It's definitely not the first inflatable airplane hangar, and with 4 hours of build time required, it's probably not the easiest to set up, either. But it does have some features that Solar Impulse needs. The hangar is translucent, meaning Solar Impulse can soak up some rays and recharge while it's docked inside, and it's also wide enough to accommodate the plane's 208-foot wingspan.