Two reasons: 1. Fuel economy is poor. 2. Rotor tip seals are problematic, giving poor time between overhauls.
However power to weight is very good. Problems 1 and 2 are not that bad compared to regular aircraft engines. On Mon, Apr 20, 2015 at 6:42 PM, Bill Tugnett <[email protected]> wrote: > Why did Mazda (who probably built more rotary's than anyone) discontinue > them? > http://www.foxnews.com/leisure/2012/06/26/mazda-ends-production-rotary-engine/ > On 20 Apr 2015 18:19, "Peter Champness" <[email protected]> wrote: > >> Rotary Engines seem to offer a lot for light aircraft. Why has it taken >> so long for them to find this niche application? >> >> On Mon, Apr 20, 2015 at 4:40 PM, Tom & Jane Gilbert < >> [email protected]> wrote: >> >>> Hi John, >>> >>> I look forward to my magazine as always but... The ASK 21mi uses the >>> Austro rotary engine... Not the Solo 2-stroke. >>> >>> Regards, >>> >>> Tom >>> >>> >>> >>> Sent from my iPad >>> >>> > On 20 Apr 2015, at 1:24 am, John Roake <[email protected]> wrote: >>> > >>> > GLIDING INTERNATIONAL >>> > >>> > ISSUE MAY 2015 >>> > >>> > >>> > >>> > Expect your copy of the magazine in your mail box next week. This >>> issue has >>> > a wide range of exceptional stories and photographs including : >>> > >>> > € Finally, Schempp-Hirth has announced their answer to the 18 metre >>> > sailplane debate. Unveiled at ¹Aero 2015¹ at Friedrichshafen, the >>> Ventus >>> > III is something truly to behold and if it flies as well as it looks, >>> the >>> > opposition has something to be wary of. We are the first to produce >>> photos >>> > of the Ventus III with an accompanying press release from >>> manufacturers. >>> > >>> > € An official report on the German expedition to Everest and beyond >>> headed >>> > by Klaus Ohlmann. Some exceptional photographs. Not the every day >>> gliding >>> > scene. What they did was quite frightening. >>> > >>> > € The co-pilot of Germanwings flight 9525 had a long association with >>> the >>> > Westerwald Gliding Club in Germany. A review of his past gliding >>> history >>> > and a number of facts on Andreas Lubitz not previously made public. >>> > >>> > € Have you heard of the GloW sailplane. A factory has been sent up >>> in the >>> > United Kingdom to produce this sailplane with an entirely new self >>> launch >>> > feature - there is nothing like it! They are guaranteeing to be the >>> least >>> > expensive new sailplane on today¹s market. The first production >>> models will >>> > appear in September. Full coverage of the history and future (with >>> photos >>> > and graphics) on this project. >>> > >>> > € Englishman Mike Till is an inspirational gliding instructor who >>> follows >>> > the sun instructing at Omarama in the English winter and in England¹s >>> London >>> > Gliding Club at Dunstable in the New Zealand winter. With 12,000 >>> hours in >>> > sailplanes and almost the same in tow-aircraft, this Œgentleman¹ has >>> had an >>> > amazing career that will keep readers enthralled with his history. A >>> report >>> > from Rod Dew, famous pilot and writer on gliding affairs. >>> > >>> > € Aldo Cernezzi, our in house, sailplane evaluator, flies and reports >>> on >>> > the Stemme S6. If motor gliding interests you, you will enjoy Aldo¹s >>> always >>> > frank report. >>> > >>> > € Steve Noys comes across a pre-war designed two seater trainer used >>> by the >>> > U.S. Airforce in 1942. He takes on the mammoth task of restoring it to >>> > flying status. Well illustrated! >>> > >>> > € A major break through in radio technology. The Pizzicato Project >>> uses >>> > less than 10% of current production parts in producing a communication >>> > transceiver. Expect transceiver products to dramatically become >>> cheaper in >>> > the near future. Cambridge Consultants (England) are confident they >>> have >>> > discovered major new circuitry for our every day radio products. >>> > >>> > € A review of the ŒRound the World Courtesy of the Sun¹ project. >>> Until now >>> > few have appreciated the size of this powered glider. Detailed >>> graphics. >>> > >>> > € To our pilots who always carry a camera with them, you will be >>> extremely >>> > interested in the new Œstick on camera to any surface¹ activated by a >>> cell >>> > phone. This is a new product for those who love taking Œselfies.¹ >>> Cost >>> > $79. >>> > >>> > € We devote a page to the U.S, Pilots Bill of Right Part II. The >>> > ramifications of this project will have world-wide effects for every >>> soaring >>> > pilot. >>> > >>> > € The Wright Brother were not first. Heard of Cayley? Well he was a >>> > hundred years ahead of the Wright boys and he proved it. Recent >>> discovery of >>> > Cayley graphics of 1792 will have you thinking. A remarkable story for >>> > gliding historians and others with just a mere interest in the sport. >>> > >>> > € At last we can let subscribers know about the program under way at >>> the >>> > University of Texas in Dallas. Learning about the whereabouts of >>> active >>> > thermals whilst flying is now a possibility. A big funded research >>> program >>> > is under way. See this current issue. >>> > >>> > € The U.S. FAA have finally released the rules that will apply to the >>> > aerial use of drones. A must read for active soaring pilots. >>> > >>> > € The Australian Airforce have applied flight restrictions on the >>> ASK21 >>> > Mis. >>> > There needs to be a fix for the self launch Solo motor. >>> > >>> > € Major accidents world wide since our last issue: no sailplanes >>> involved >>> > in mid airs but two bail outs. All detailed in this issue. >>> > >>> > € Plus 35 other stories that will educate and inform. >>> > >>> > We hope you will join us. >>> > JOHN ROAKE >>> > EDITOR. >>> > >>> > NEW (or RENEWING) SUBSCRIBERS CAN EASILY EFFECT A SUBSCRIPTION BY >>> GOING TO >>> > OUR WEB PAGE www.glidinginternational.com >>> > >>> > >>> > >>> > _______________________________________________ >>> > Aus-soaring mailing list >>> > [email protected] >>> > To check or change subscription details, visit: >>> > http://lists.internode.on.net/mailman/listinfo/aus-soaring >>> >>> _______________________________________________ >>> Aus-soaring mailing list >>> [email protected] >>> To check or change subscription details, visit: >>> http://lists.internode.on.net/mailman/listinfo/aus-soaring >>> >> >> >> _______________________________________________ >> Aus-soaring mailing list >> [email protected] >> To check or change subscription details, visit: >> http://lists.internode.on.net/mailman/listinfo/aus-soaring >> > > _______________________________________________ > Aus-soaring mailing list > [email protected] > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring >
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