“If I were to make a prediction, I’d think there’s a good chance that it is not batteries. But capacitors.” Karl Young, CEO of eXtreme Capacitor, Inc. started his presentation at the fifth annual Electric Aircraft Symposium with these words from Tesla Motor’s Elon Musk. The reference to capacitors superseding batteries as an energy source for electric cars came from Musk’s address at the Cleantech Forum in San Francisco on 16 March 2011. Young’s talk before the April 29 gathering in Santa Rosa, California detailed the double-layer supercapacitors his company produces, and what Young feels are the advantages these have over “traditional” lithium and other batteries. He is “trying to overcome the issues of batteries,” including, according to Young, their weight, slow charge and discharge times, their short operational lifetimes (typically 500 to 3,000 cycles), and their toxicity and flammability. Young contrasted that with the specifications for his eXtreme X-Cap™ “double-layer capacitor-based energy storage technology,” which can last through over …
Ingenious e-Genius
At the third annual Electric Aircraft Symposium in San Carlos, California in 2009, designers from Germany and Slovenia showed their plan for a hydrogen-powered aircraft called Hydrogenius. Today, a newly constructed, battery-powered “e-Genius” (developed along parallel lines with Hydrogenius) will be Eric Raymond’s mount for the July 10-17 Green Flight Challenge in Santa Rosa, California. Eric writes that “e-Genius is now flying, and has reached the required 100 mph.” Hydrogenius’s original layout, replaced for the Green Flight Challenge with a simpler lithium-polymer battery-only system. 1 – Hydrogen tank 2 – Radiator 3 – Stack Module (Hydrogen Fuel Cell) 4 – System Module (Hydrogen Fuel Cell) 5 – Power Distribution Unit 6 – LiPoly Battery to start the fuel cell system 7 – Total Rescue System e-Genius’s 60 kilowatt (80.4 horsepower) motor is claimed to be able to fly 100 kilometers (62 miles) on the electrical equivalent of a mere 0.6 liters (0.16 gallons) of gasoline, or about 392 miles per gallon. As …
PhoEnix GFC Update
Jim Lee’s informative and beautifully illustrated blog features “PhoEnix with the capital E in the middle,” the motorglider he will fly in the CAFE Green Flight Challenge in July. Electrically powered with a Krall 44 motor, it has a pointy nose and retractable gear to make it more slippery than the already high-performance Phoenix without the capital E and with a mere Rotax behind the propeller. According to Lee, the 14.5 meter (47.57 feet) modified Schempp-Hirth Discus wing is raised above the low position of the gas-powered version to make room for the electrically-retracted gear, which hides in what was originally a luggage compartment – another change from the standard Phoenix. The wing is configured to win the GFC, as is the rest of the airplane. Lee, the U. S. distributor for Phoenix Air, says in his blog, that “the PhoEnix is purpose built for a race. A race that offers big bucks for the winner, but with a bar set so …
In my dreams I fly like a bird… Martin Wezel 1964 – 2011
It takes intelligence, courage and a special spark to design, build, and test fly an airplane. It becomes a deep loss for all in the aviation community when that spark is extinguished. We are saddened to learn of the death of Martin Wezel in the crash of a Yuneec E1000 he was scheduled to fly in the Green Flight Challenge. Wezel was designer and distributor of aircraft such as the Viva, a high-performance motorglider that had brought him to the attention of Tian Yu, Chairman of Yuneec International. Yu reflected on the loss of Martin in a company announcement. In Germany, his wife Petra lamented the loss of her “dear man and best friend,” and vowed to continue operating the company to which he had given his dreams of flight. The CAFE Foundation joins in mourning the passing of a dedicated and brilliant leader.
Synergy: A Practical Lightplane for the New Century
At EAS V, Synergy Chief Operating Officer John Paul Noyes framed his presentation of the Synergy aircraft by showing a picture of a 1973 portable telephone, then comparing it to a current model. The clunky size, heft and limited utility of the former compared with its slim, feature-laden modern counterpart tells a story of intense design improvements, quantum increases in capabilities and far lower costs for a significantly better product – something usually anticipated in the history of modern products. Along with that historically comparative pairing, though, he showed pictures of a 1973 Cessna 182 and its Lycoming engine along with shots of modern examples of the two. Not much other than the paint scheme distinguishes today’s Skylane from its antecedent. Following Noyes’ outlook, it’s a bit disheartening to review Wikipedia’s specifications for 182s for the past 54 years. Little, other than the introduction of improved instruments and Omni-Vision, has changed. Although a great deal of this is due to …
Thunderbirds Are Go With Camelina
The Air Force Thunderbirds F-16 demonstration team will become the first Department of Defense military air show group to fly on bio-fuel when two members of the team have their craft powered by a 50-50 mix of standard JP-8 and camelina-derived bio-fuel. The flights were scheduled to place at Andrews Air Force Base for the Joint Services Open House on May 20 and 21. The team follows two other uses of camelina in military jets: the Earth Day 2010 flight of an FA-18s (the Green Hornet) and this year’s supersonic flight on the fuel blend by an F-22. These demonstrations exhibit the interest DOD planners are taking in finding alternative fuels. The Air Force press release makes the overall effects of such changes clear. “The team will fly with Camelina-based hydrotreated renewable jet fuel as part of the nation’s overall strategy to reduce reliance on foreign energy and establish greater energy security through conservation and use of ‘home grown’ alternative energy sources, said …
E-Fenix, the Two-Seater Trike
Anne Lavrand, Electravia’s General Manager, announced the E-Fenix, the first two-seat electric paratrike. Developed with Planète Sports & Loisirs, a leisure activities company based on Re Island, off the coast of La Rochelle, France, the trike will carry visitors on discovery flights over the scenic island. E-Fenix has an electric propulsion system from Electravia, which includes a 35-horsepower GMPE 104 motor, an E-Props QD2 four-blade propeller, and a six kilowatt-hour Kokam Lithium-Polymer battery. All is carried aloft on a 38-square-meter ITT Bulldog wing, which can fly 35 minutes with two persons aboard, and 55 minutes with only the pilot. First flights took place on May 12th, with Michaël Morin as test pilot. Reported to be “very silent and comfortable,” the trike must be registered by the French Civil Aviation Administration (DGAC) before being used commercially. Electravia has a full range of projects and has been in the forefront of early electric flights, including the first electric ultralight flight of 48 minutes …
Sustainable Soaring
Glaser-Dirks Flugzeugbau, the German sailplane manufacturer, has introduced the DG-1001te, a two-seat, electric turbo craft that can sustain flight and even show a modest rate of climb, but is not capable of self-launching. The “turbo” designation is common on European craft that rely on a pop-up motor to maintain flight in unfavorable soaring conditions. Following an aero-tow or winch launch, the sustainer engine is used to allow “get-home mode” operation, or to maintain altitude while the pilot searches for areas of better lift. Until recently, single- and two-cylinder Solo two-stroke engines served on many applications. Electric motors are beginning to find favor, though, because of their ease of starting and the fact that their light weight and high power output counterbalance the added weight of batteries. The battery pack can be kept small because of the small power output required to keep sailplanes airborne – under five horsepower at best gliding speed for even large birds. Luka and Matija Znidarsic, …
Solar Impulse Flies Over Four Countries on First International Flight
Supporters of the Solar Impulse gathered to celebrate the giant solar-powered airplane’s landing in Brussels, Belgium today after the craft had crossed Switzerland, France, Luxembourg, and Belgium in its 630 kilometer (340 nautical mile), 12 hour, 59 minute flight. André Borschberg, CEO and co-founder of the project, flew the mission, starting 8:30 a.m. Payerne, Switzerland time and took the leisurely flight over some of the most scenic landscapes in Europe, with an average speed of 50 kilometers per hour (27 mph – one mile per hour under the stall speed of US ultralights). He had time to enjoy the view from his average cruising altitude of 1,828 meters (6,000 feet). Borschberg explained, “It’s a spectacular flight. The takeoff was a little challenging because we had to rush due to air traffic activity consequently I needed a little bit of time to get everything in order before I could become serene. It was [a] little bit [of a] northeast wind during …
The Joby Monarch – Rising Above It All
JoeBen Bevirt is an extraordinary individual – and that’s no hyperbole. Creating a lucrative underpinning with his line of knobby, infinitely-adjustable tripods, cell-phone and iPad™ holders, and LED lights, he has expanded into designing giant kites to fly into upper-atmosphere winds and generate high-output electricity. To loft these kites, he has created a line of motors with the aid of Diederik Marius, shown on the Joby Motors web site, and so far include two versions each of the JM1S and JM2S. Each can be configured with different windings for different applications. The JM1S weighs 1.8 kilograms (3.96 pounds) and can put out 12 kilowatts peak (16 horsepower) at 6,000 rpm. Diminutive, it is only154 millimeters in diameter (6.06 inches) and 53 mm (2.08 inches) thick. Although recommended usage includes radio-controlled models, one can see electric ultralight aircraft being designed in enthusiasts’ heads. Prices are $895 and $955 for the two configurations of the motor. The larger JM2S weighs 3.35 kg …