Electric aircraft have flown for the last six years at the big Oshkosh AirVenture airshow. Randall Fishman started the movement in 2007 showing his ElectraFlyer trike, and then flew his ElectraFlyer C, a single-seater derived from the Moni motorglider the following year. He won the 2008 Stan Dzik Memorial Award For Design Contribution “for the installation of the Electric-Motor power train” and the Dr. August Raspet Award. Last year he displayed his ElectricFlyer ULS, a twin-boom pusher with soaring capabilities. Others have followed, with Yuneec cruising overhead in 2010, winning the Lindbergh Electric Aircraft Prize (LEAP) prize for the craft’s “significant commercial potential” and “compelling design.” Dale Kramer, flying his twin-Joby-motored eLazair around the ultralight circuit in 2011, showed the potential for electric motors on an amphibian. Sonex Aircraft showed its Waiex in its e-Flight Initiative area in the Innovation Pavilion, looking essentially the same as over past years. the company has noted several test flights since its late December, …
Getting Wired on the e-Spyder
Stephan Boutenko of Alternair passed this along, and it is worth a read. Jason Paur of Wired Magazine’s Autopia web site reports on flying Tom Peghiny’s e-Spyder, a combination of Tom’s Flightstar ultralight with a Yuneec motor, controller and battery. Paur’s impressions are highly positive, with the desire to continue the experience. He notes, “Flying on battery power is about the unique experience of flying without the noise, vibration and smells of a traditional engine pulling you along. It’s an entirely different sensation. And like gliding, it is about the challenge of flying within the limitations of the aircraft and maximizing your time aloft. “’It’s like hypermiling a flight,’ Peghiny says.” Hypermiling in automobiles is the act of conserving fuel by tactics such as accelerating gently to a speed somewhat above the average desired, then coasting to a point below that average and accelerating again. Electric aircraft may require such tactics for at least the immediate future until battery technology …
Yuneec Adds to Airplane, Motor Lineup
Shanghai-based Yuneec, already promoting a line of electric paramotors, an electric trike, the two-seat E430, unveiled at last year’s AirVenture, and a series of motor/controller/battery combinations, has added to their offerings at AirVenture 2010. New craft include two aircraft, the Apis 2 and Viva from Martin Wezel Flugzeugtechnik, a German designer and purveyor of sailplanes and light sport aircraft. The Apis 2 is a derivation of the Silent electric sailplane, and in this application will be powered by a Yuneec motor system. The Viva, a two-seat motorglider, was designed originally for an HKS-700E two-cylinder engine of about 60 horsepower, and will be converted, like the Apis, to Yuneec power. Spanning 15 meters (49.2 feet), the Apis 2 has a best lift-to-drag ratio of 39:1 at 95 kilometers per hour (59 miles per hour). Normally fitted with a Hirth F33 two-stroke engine of 27 horsepower, the sailplane is self launching and carries 14 liters of fuel, enough for about an hour-and-a-half of …
Electrify Your Reading Pleasure
Flying Magazine, in its November issue, has its usual stunning photo review of this year’s AirVenture at Oshkosh, Wisconsin, but adds a three-page review of the electric aircraft that showed up at the fly-in. Robert Goyer, senior editor, is enthusiastic about the planes he saw, and gives the largest number of column inches to Yuneec’s E-430 two-seater. Goyer has reservations about the aircraft’s performance and limited range, and turns to another Yuneec-powered craft, Tom Pehigny’s FlightStar e-Spyder, propelled by a 27 hp, single-battery pack system, with the assessment that this type of craft seems more suited to electric power in its current state of development. Although Pehigny admits restrictions in terms of range so far, he “does point out some benefits we can see already. The e-Spyder…is whisper-quiet, smooth-running, dirt simple to start and smoke and odor-free.” Goyer includes a brief note on Randal Fishman’s Electra-Flyer C and new two-seater X, but gives little detail on either. Goyer foresees a …