Universe Today
Forget about jetpacks or flying cars. How about your own personal stealth aircraft? NASA has unveiled the Puffin, an experimental electrically propelled, super-quiet, tilt-rotor, hover-capable one-man aircraft. According to Scientific American, the 3.7-meter-long, 4.1-meter-wingspan craft is designed with lightweight carbon-fiber composites to weigh in at 135 kilograms (not including 45 kilograms of rechargeable lithium phosphate batteries.) The Puffin can cruise at 240 kilometers per hour, but for those high speed chases, can zoom at more than 480 kph. See video below.
Since it doesn't have an air-breathing engine, the Puffin is not limited by thin air. So, basically, it doesn't have a flight ceiling. The designers say it could go up to about 9,150 meters before its energy runs low enough to drive it to descend. With current state-of-the-art batteries, it has a range of just 80 kilometers if cruising, "but many researchers are proposing a tripling of current battery energy densities in the next five to seven years, so we could see a range of 240 to 320 kilometers by 2017," says researcher Mark Moore, an aerospace engineer at NASA's Langley Research Center in Hampton, Va. He and his colleagues unveiled the Puffin design on January 20, 2010 at an American Helicopter Society meeting in San Francisco.
For takeoff and landing, the Puffin stands upright. But during flight the whole aircraft pitches forward, putting the the pilot in the prone position, like in a hang glider.
Of course, the original idea for this personal aircraft is for covert military operations. But if they can design them safe enough and cheap enough, everyone will want one. It could change our ideas about electric propulsion and personal aircraft.
By March, the researchers plan on finishing a one third–size, hover-capable Puffin demonstrator, and in the three months following that they will begin investigating how well it transitions from cruise to hover flight.
Hat tip to my sister Alice!
