According to FlightGlobal.com, two Yuneec International E430’s will attempt to fly in formation over Mt. Everest next January or February. This will be the first flight over the 29,029ft (8,848m) peak by electric aircraft, and will highlight, “The viability of electric-powered flight and Yuneec’s designs,” according to FlightGlobal, the web-based outlet for Flight International magazine. Their report includes this video interview with Pierre Hallet, the French distributor for Yuneec, and one of the pilots slated for the expedition. According to Hallet , the only modification to the aircraft will be the addition of a DUC variable-pitch propeller, presumably to provide optimized climb in the thin atmosphere. Aircraft will be shipped to Katmandu, where they will be assembled, then flown to a base camp about 50 kilometers (31 miles) from the base of the mountain. Once weather conditions are favorable, the two E430’s will climb over the mountain and glide back to base camp.
Sikorsky’s Project Firefly™ Electric Helicopter Demonstrator
Sikorsky Innovations, the technology development arm of Sikorsky Aircraft, revealed last week at the Farnborough International Air show and this week at AirVenture 2010, the Firefly™ Technology Demonstration Aircraft, the first all-electric helicopter. Based on an S-300C, the electrified version replaces the original Lycoming drive train with a U.S. Hybrid power package consisting of a 200 horsepower electric motor, motor controller, and 1,100-pound lithium- battery from Gaia. To monitor operations and “the health” of the craft, Sikorsky has installed an LCD display in the modified center console. One benefit of electrified helicopters would be the discarding of the traditional complex series of mechanical links between the main rotor power takeoff and the tail rotor. The tail rotor on Firefly can be powered by small electric motor linked to the main rotor’s speed output signal. The battery pack’s high weight will allow only 15 minutes of flight at first. “Our objectives with Project Firefly are to provide a proof of principle …
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 …
Bye Energy, Cessna Move Toward the Electric 172
In a press release datelined Oshkosh, Wisconsin, July 26, Cessna Aircraft Company announced, “That it is collaborating with Bye Energy, Inc., an integrator of clean, alternative energy technologies for business and general aviation aircraft, to design and develop an electric propulsion system for a Cessna 172 proof of concept (POC) aircraft.” Bye Energy is a Colorado-based aerospace company, and its CEO, George Bye, presented the Green Flight Project, his vision of the electric 172 at this year’s Electric Aircraft Symposium in Rohnert Park, California on April 24. The fact that Cessna would agree to such collaboration is a significant step, and a verification of the market research Bye and his group have done. Possibly fueled by the fuel question – where will future pilots top up their avgas-burning aircraft? – Bye’s solution is one approach that is immediately achievable with current off-the-shelf components, with Bye and Cessna expecting first flights of the newly powered airplane by year’s end. The aging fleet …
AirVenture 2010 World Symposium At Eagle Hangar
An indication of the enthusiasm people are showing for the potential of electric flight, tickets are going fast for the Experimental Aircraft Association’s 2010 World Symposium on Electric Aircraft, part of AirVenture 2010. The WSEA will be held on Friday July 30 on the Eagle Hangar main stage. The morning session, titled, “The Dream of Flight,” runs from 9 a.m. to Noon. The lunch session, “The Voice of Experience: Electric Aircraft Builders,” runs from Noon to1:30 p.m., and the afternoon session, “Putting Vision to Practice,” runs from 1:30 to 4:30 p.m. According to the EAA, “Among the confirmed participants for the symposium are FAA Administrator Randy Babbitt; Electric Aircraft Corporation founder Randall Fishman; Yuneec founder Tian Yu; Sonex Aircraft founder John Monnett; and Earthstar Aircraft founder Mark Beierle, who displayed his eGull ultralight aircraft at AirVenture 2009. Commercial pilot and flight instructor Erik Lindbergh, grandson of aviation pioneer Charles Lindbergh and founder of the nonprofit Creative Solutions Alliance, will also be on …
Solar Cells Can Never Be Too Thin
AirVenture’s unofficial prize for the most popular aircraft at each year’s fly in – the brown grass award, named for the trampled turf around the much-thronged craft, had a CAFE Foundation equivalent at this year’s Electric Aircraft Symposium. That would be the crumpled carpet prize for the circles around Dr. Joseph (Joe) Armstrong, Chief Technical Officer for Ascent Solar, a Thornton, Colorado-based firm. Wearing a bandolier-like ribbon of extremely thin, flexible solar cells at the end of his talk, he was surrounded by break-takers eager to get a closer look at his impressive array of photovoltaics. Commercial production modules of the copper indium gallium (di)selenide (CIGS) cells have been verified at an industry-high10.5-percent efficiency by the National Renewable Energy Laboratory (NREL). The cells are created using thin-film deposition on a plastic substrate; this monolithic integration of the cells and their flexible backing permitting their draping over curved shapes. An integrated manufacturing process using “laser pattern interconnect printing” forms PV modules, 20 volt …
QinetiQ Lands After 14 Days Aloft
QinetiQ, a British aerospace manufacturer, launched its unmanned, solar-powered twin-motored aircaft from the Yuma, Arizona Proving Grounds on July 9, 2010 and landed it today, July 24. According to QinetiQ’s press release, ” Zephyr successfully landed after 14 days (336 hours) and 21 minutes flying over Arizona and is now awaiting official confirmation of its world record status.” http://www.youtube.com/watch?v=CT-DYeEP8dg “An official from the Federation Aeronautique Internationale (FAI), the world air sports federation, has been monitoring progress at the Yuma Proving Ground and when Zephyr is back on the ground he looks set to be able to confirm a number of new world records. This includes quadrupling its own unofficial world record for longest duration unmanned flight (82 hours, 37 minutes set in 2008) and surpassing the current official world record for the longest flight for an unmanned air system (set at 30 hours 24 minutes by Northrop Grumman’s RQ-4A Global Hawk on 22 March 2001). Zephyr will also have flown longer, non-stop …
Green Flight Challenge: Six Steps to Synergy
Conventional wisdom says that an airplane is a collection of compromises – a premise seemingly borne out in practice. Bigger wings mean slower speeds, but more lift. Smaller engines mean less performance, but better economy. Roomier cockpits mean lower fuel mileage and reduced cross-country range. Everybody knows these things. But what if, applying the Firesign Theater’s comedic dictum, “Everything you know is wrong,” someone shook those bits of conventional wisdom and sorted out a new way of looking at an airplane? It’s been done before. Burt Rutan’s wildly creative approach to seeing past convention gave us the Varieze, Catbird, Boomerang, Proteus, Voyager, and Spaceship One, among others. Because such creations don’t follow the usual scientific method of changing one variable at a time, but seem to take multiple detours around “normal” all at once, the results take us by surprise. John McGinnis, of Kalispell, Montana, seems to delight in taking uncomfortable turns around convention. His presentation at the fourth annual …
QinetiQ Zephyr Breaks Official Record for Solar-Powered Endurance
According to BBC News and GlobalFlight.com, QinetiQ’s Zephyr, a 22.5 meter (72 feet) unmanned, solar-powered aircraft has been in the air for more than a week over the Yuma, Arizona Proving Grounds, and program managers intend to keep it there for a total time of at least fourteen days. Having flown since 6:40 a.m. July 9, its endurance is now four times that of any other unmanned aerial vehicle. A US Global Hawk holds the current official world endurance record for an unmanned aerial vehicle (UAV) of 30 hours, 24 minutes. Zephyr’s record is being certified by the Federation Aeronautique Internationale, the world air sports federation. Jon Saltmarsh, Zephyr’s project manager, says the craft, “Is basically the first ‘eternal aircraft,’” a name once given to AeroVironment’s Helios and related aircraft. The 50 kilogram (110 pound) unmanned airplane emulates the flight pattern followed by Andre’ Borschberg in taking the Solar Impulse to a world record for manned solar-powered airplanes. Its thin solar cells power the twin …
Hail HALE: Boeing’s “Flying Bowling Pin”
On July 12, at its St. Louis, Missouri plant, Boeing rolled out its Phantom Eye high altitude long endurance (HALE) aircraft. Various members of the press and several bloggers took an opportunity to pelt the new plane with sobriquets such as, “flying bowling pin,” or “fat kid,” failing to understand the aerodynamic advantages of the laminar flow fuselage. A quick study of CAFE Foundation references would correct these reporters’ initial impressions. Notwithstanding the apparently controversial aesthetics of the 150-foot span craft, the exciting news for green aviation enthusiasts is its power system – a pair of 15o-horsepower, 2.3 liter Ford Duratec engines, turbocharged and fueled by a “breakthrough” liquid hydrogen system. The long wings, drooping in the press photos, will rise and pull up the flexible struts in flight, a great deal like some of the larger sailplanes of the 1930’s. Sailplane efficiencies apply in this realm, with a projected cruising altitude of 65,000 feet at a speed of 150 …