Pipistrel Introduces The World’s Most Powerful Electric Airplane

Pipistrel just rolled out the world’s most powerful electric aircraft — and it’s the first to seat four people. The Taurus G4 required two years of preparation and development, but took just four months to build. Its uniquely aerodynamic design connects two Taurus G2 lightweight gliders with a 15 ft. wide electric engine.

The concept aircraft carries many of the advantages originating in the microlight world. Its lightweight carbon fiber and Kevlar construction gives it many of the qualities of a glider, while a 1,036 lb. lithium polymer battery pack combined with a powerful electric propulsion drivetrain make it ultra-efficient.

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Grandson of flying legend Charles Lindbergh, Erik Lindbergh, has given PC-Aero and SolarWorld the Lindbergh Prize for Electric Aircraft Vision Award. Germany’s PC-Aero is the developer of Elektra One a complete electric aircraft system that’s also solar power enabled.

The crystalline solar technology manufactured by German based SolarWorld was used by PC-Aero to make Elektra One solar enabled. PC-Aero also created a solar powered hanger with pv panels on the rooftop to not only charge up the aircraft but also power the hanger itself. The excess energy will be fed back to the power grid.

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SolarWorld (Bonn, Germany, and Hillsboro, Ore.) the largest U.S. manufacturer of solar photovoltaic (PV) panels for more than 35 years, will showcase the maiden U.S. appearance of a zero-emissions electric aircraft at EAA AirVenture Oshkosh 2011 in Oshkosh, Wis., starting Monday, July 25th, 2011. SolarWorld and Germany’s PC Aero are working together to pioneer the world’s first comparatively affordable electric aircraft system complete with solar-equipped aircraft and solar-charging hangar.

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Model 367 BiPod

Have you ever fantasized about driving a car that quickly transforms into a aircraft while on the move? If you have, then you will be glad to know that in very near future your dream can turn into a reality. Well Burt Rutan, an aviation genius and founder and ex-CEO of Scaled Composites, unveiled this fantasy vehicle recently.

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EADS VoltAirElectric aircraft concept

The other ZEHST (zero-emission hypersonic airliner) model that was unveiled at the Paris Air Show 2011 was EADS’ VoltAir. VoltAir is an electricity-driven aircraft that could actually rule the skies in the next 25 years. This futuristic and innovative, all-electric airliner will function on two modified lithium air batteries that will have the capacity to power two extremely efficient electric superconducting motors. These motors will then run the two counter-rotating co-axial shrouded propellers located at the rear end of the airliner.

 

EADS VoltAirElectric aircraft concept

Low weight (as it will be made out of carbon fiber), composite design and powerful aerodynamics will provide VoltAir an edge over regular aircraft as it can be propelled with ease. The batteries of VoltAir will be rechargeable and the turnaround time will be similar to the regular aircraft that require re-fuelling. However, studies are still being conducted for VoltAir, as electric motors lack the capability of providing high-power density for commercial aircraft. But with the advancement in the area of HTS (high-temperature superconducting) material, EADS is hopeful of finding a solution for the same. The traditional copper coil wire will be replaced by the HTS wiring in VoltAir that will lead to zero loss of electric power. VoltAir is a futuristic, generation-next aircraft that will not only facilitate an environmentally-friendly ride but will also provide a solution to our depleting oil reserves.

EADS anticipates that as the technology is developed, high-density superconducting electric motors will actually exceed the power-to-weight ratio of today’s gas turbine engines.

The VoltAir certainly doesn’t look like today’s commercial airliners, but its appearance is about more than just getting attention. The fuselage is designed for an optimum thickness-to-length ratio, which reportedly minimizes aerodynamic drag while maximizing interior space. With the propellers mounted in the rear, they are able to “ingest” the wake from the fuselage, while the wings are able to remain streamlined and engine-free.

Because the weight of the batteries wouldn’t change throughout the flight (unlike the weight of a kerosene fuel tank), the rear-mounted motors and the front-mounted batteries would be able to nicely balance the aircraft.

 

Source: gizmag
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NASA’s Puffin The Personal Electric Air Vehicle

Mark Moore, an aerospace engineer, is the person who dreamed about the Puffin. Puffin is a single seated electric powered airplane. Moore conceptualized the idea of electric aircraft for his doctoral degree. Operating it from your house is as simple as taking out your car from the garage. You can launch this aircraft from your own home because of vertical take-off and landing. Mark Moore is trying to combine the best feature of a plane and a helicopter into a hybrid known as the Puffin. The Puffin is not some abstract reality that is not going to take a concrete shape.

Moore is an expert in small aircraft flying system. He is working with NASA, MIT and the National Institute of Aerospace to turn Puffin into a reality. This electric aircraft would be 12-foot (3.7 m) long, and have a 14.5-foot (4.4 m) of wingspan. Puffin is already a hit in the Internet community. Moore himself tells the whole story, “The animation of the Puffin on YouTube has gotten more 648,000 hits in a week. Until the concept was mentioned in the media Jan. 19, the video had only been clicked on a couple of thousand times since it was uploaded to the NASAPAV channel last November.” The animation was created by Analytical Mechanics Associates graphic designers.

 

 

Another characteristic of the Puffin is it can take pilot up to 50 miles at a cruising speed of 150 mph. It’s also lightweight, totaling up to just 181kg when fully loaded with the batteries. But its greatest advantage without doubt is the zero carbon emission. The design would be powered by a total of 60 horsepower through electric motors, which are designed to be able to fail any two powertrain components on either side and still produce the required power to hover. It has a cruising speed of 150 mph (241 kph), but cruises more efficiently at lower speeds The range with current battery technology would be about 50 miles (80 km).

Moore draws the analogy between actual puffin bird and his own puffin. Puffin’s wings also look quite small for flying. Moore’s creation aircraft would also have small wings. He states another similarity between his bird and nature’s bird, “But it’s also apparently called the most environmentally friendly bird, because it hides its poop. So the vehicle is environmentally friendly because it essentially has no emissions. Also, puffins tend to live in solitude, only ever coming together on land to mate, and ours is a one-person vehicle.”

Puffin would be a hybrid of helicopter and small aircraft. Like a helicopter it would stand upright on the ground. Its tail consists of 4 legs that act as landing gear. It lifts off like a helicopter. When it hovers and leans forward to fly horizontally it gives the appearance of a hang-glider. Next step of the NIA will be to fly a remote control one-third size model. This experiment will enable them to validate theorems made in academic studies, with the particular emphasis on exploring the transition from hover to forward flight.

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Source: alternative-energy
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