Robert Adam, one of the organizers of the Green Speed Cup in Germany and pilot of the Flight Design CTLS that ended the competition in seventh place, shared some information on the challenges faced by pilots in this year’s event. “We had 12-15 knots crosswind today (only a little less yesterday) and Tim-Peter (-Voss) managed this demanding taildragger (the SPACEK s.r.o. SD-1 microlight) calmly!” This very light and short-coupled airplane flies with a variety of two- and four-stroke engines, but Voss’ had a Verner JVC-360 four-stroke unit of 38 horsepower. It averaged a little over four liters per hour fuel consumption per 100 kilometers (59 mpg) over the practice day and two contest days. In the Green Flight Challenge, it would have been penalized for being a single-seater and thus having a lower passenger-mile-per-gallon figure than the two, and even four-seat entrants. The TDI turbo-diesel DA-40, for instance, would have had a 4X passenger mile per gallon figure if that had …
Electravia Makes a Good Showing at Aero Expo
Anne Lavrand, founder and President of Electravia, continues to find ways to expand her company’s product offerings while offering well-integrated packages of reasonably-priced electric aircraft and components. At this year’s Aero Expo in Friedrichshafen, Germany, her firm displayed the fuselage of the Electrolight 2, a modified Fauconnet sailplane, fitted with a 30-hp Lynch-type motor, controller, and batteries. It is the least expensive electric motorglider on the market at only 30,000 Euros ($39,600), and allows powered flight for recharging costs of about 0.65 Euros per hour (86 cents). The motor, normally graced by one of Anne’s wooden e-Props, had a forward-folding “clap propeller” or “bec de canard” (literally, the beak of the duck), a variant on the light carbon fiber propellers that e-Props also produces. This should reduce drag and help improve the performance of the Fauconnet, a French version of the popular Scheibe L-Spatz, which Anne notes was flown by every young German learning to fly sailplanes a few years …
Klaus Ohlmann Sets New Solar Records
Klaus Ohlmann, 59-year-old soaring record holder, has set two new records in September, 2011, aboard Icare 2, Stuttgart University’s solar-powered sailplane. The 25 meter (82 foot) span aircraft weighs a mere 457.7 pounds empty, batteries, motor, propeller and solar cells adding another 152 pounds. At 805 pounds with pilot, its 25 square meters (269.1 square feet) of wing area make it a “floater” in soaring terms, and probably not the “penetrator” that a good cross-country machine needs to be. This makes Ohlmann’s two records, the latest of 38 total, all the more remarkable. Declaring his waypoints before each flight, he flew an out-and return flight of 384.4 (238.3 miles) kilometers on August 17, then topped that with a distance flight to three waypoints of 439.3 kilometers (272.4 miles) on September 10, both flights in the Haute Alps of southern France. Its designers acknowledge the limitations of Icare2’s performance. “She’s hardly the fastest bird in the skies, but its 25m wingspan and elegant …
Albatross, Dragonflies, and Hummingbirds
Your editor took a trip to Tehachapi, once home of the infamous California Women’s’ Correctional Institution, mentioned in no less than three 1940’s films noirs. (It’s now a gray-bar hotel for bad boys, not bad girls.) Lesser offenses were in mind, though, since Labor Day weekend has been the time for 31 meetings of the Experimental Soaring Association’s Western Workshop. The group, devoted to improving sailplanes and testing the limits of soaring technology, has been in the forefront of many significant developments, and its members include many record holders and aerodynamics experts. This year’s convocation included talks on birds, dragonflies (the Libelle sailplane), and even a demonstration of Aerovironment’s spy hummingbird, a camera-toting drone no larger than a 90-percentile member of the Trochilidae family. Phil Barnes kicked off the Saturday talks, showing his incredible computer simulations of the dynamic soaring flight of the Albatross, which included an impassioned plea to help preserve this magnificent bird. He noted that “gyres” of plastic slurry distributed …
It’s a Race – It’s an Economy Run
Stemme, the German manufacturer of a series of highly innovative sailplanes, motorgliders and even unmanned aerial vehicles, has announced the first Green Speed Cup, which will take place between August 7 and 13, 2011, starting from Stausberg Airfield every day. Combining a race with an economy run, the six-day event will help illuminate the strategies different teams will use to fly “as fast as possible while minimizing the consumption of fossil fuel energy,” according to the GSC’s organizers. Explaining that the Cup is a “a direct comparison of technologies, machines, materials and the capabilities of the pilots,” taking into account how pilots can exploit thermals and winds, Stemme expects that the competition should “practical solutions for saving energy during powered flight.” If all goes well, “Today’s standards for cruising speed, range and endurance should be reached or exceeded as far as possible.” The contest will support a cooperative research project between Stemme and the Technical University of Dresden. Seven aircraft, …
A Record Book for the Filling
The Federation Aeronautique Internationale (FAI), standards setter and record keeper for the aviation world, recently added new classes of records, including those for solar-powered airplanes (CS). Such classes can be broken down by sub-class and category as necessary. Qinetiq’s Zephyr unmanned aerial vehicle (UAV) achieved several records in the UAV category in July, and these were made official December 23 by the FAI – a neat Christmas gift to the team. As noted in Qinetiq’s press release: “The FAI has ratified three records which the QinetiQ HALE Team claimed following Zephyr’s long duration flight in July 2010: • Absolute duration record Unmanned – The longest flying UAV in the world (beating Global Hawk’s record by a factor of 11) at 336 hours 22 minutes 8 seconds • Class Record UAV (50-500kg) – Altitude: At a height of 21,562m (which is also 5,000ft higher than Global Hawk, albeit in a different category). • Class Record UAV (50-500kg) – Duration: As above.” In the …
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