90 kg! Really. I thought that rotary engines were supposed to be light weight.
On Mon, Apr 20, 2015 at 7:25 PM, Mike Borgelt < [email protected]> wrote: > Peter, > > The Austro boat anchor installation weighs about 90Kg. People who have had > to maintain them (and get paid for it) tell me it is a maintenance > nightmare when things start going wrong. Fine until then. > > As for light aircraft: The rotary produces a lot of power from a compact > engine. There's no getting around the Second law of Thermodynamics. Lots of > power = lots of waste heat out of a small engine. Requires liquid cooling > (actually liquid heat exchange before dump to ambient). > > Liquid cooling = "radiator" (it isn't but that's what it is called, it > actually works by conduction and convection), cooling liquid, pumps and > hoses. Note we have introduced some potential failure points here as well > as weight. > > Power is developed at high RPM. Requires reduction drive to drive > propeller. Extra weight and failure points. > > There's a reason why the direct drive, air cooled Lycomings and > Continentals are still around after nearly 80 years. Put fuel injection and > electronic ignition on them and the only drawback is relatively high oil > consumption which is also a problem of the rotary. > > Mike > > > > > At 06:18 PM 20/04/2015, you 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 : > > > > €Â Finally, Schempp-Hirth has announced their answer to tthe 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. > > > > €Â An official report on the German expedition to Everestt and beyond > headed > > by Klaus Ohlmann. Some exceptional photographs. Not the every day > gliding > > scene. What they did was quite frightening. > > > > €Â The co-pilot of Germanwings flight 9525 had a long asssociation 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. > > > > €Â 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. > > > > €Â Englishman Mike Till is an inspirational gliding instrructor 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. > > > > €Â Aldo Cernezzi, our in house, sailplane evaluator, fliees and reports > on > > the Stemme S6. If motor gliding interests you, you will enjoy Aldo¹s > always > > frank report. > > > > €Â 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! > > > > €Â A major break through in radio technology. The Pizzicaato 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. > > > > €Â A review of the ŒRound the World Courtesy of the e Sun¹ project. > Until now > > few have appreciated the size of this powered glider. Detailed > graphics. > > > > €Â To our pilots who always carry a camera with them, youu 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. > > > > €Â  We devote a page to the U.S, Pilots Bill of Righht Part II. The > > ramifications of this project will have world-wide effects for every > soaring > > pilot. > > > > €Â The Wright Brother were not first. Heard of Caylley? 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. > > > > €Â 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. > > > > €Â The U.S. FAA have finally released the rules that willl apply to the > > aerial use of drones. A must read for active soaring pilots. > > > > €Â The Australian Airforce have applied flight restrictioons on the > ASK21 > > Mis. > > There needs to be a fix for the self launch Solo motor. > > > > €Â Major accidents world wide since our last issue: no saailplanes > 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 > > *Borgelt Instruments* - > *design & manufacture of quality soaring instrumentation since 1978 * > www.borgeltinstruments.com > tel: 07 4635 5784 overseas: int+61-7-4635 5784 > mob: 042835 5784 : int+61-42835 5784 > P O Box 4607, Toowoomba East, QLD 4350, Australia > > _______________________________________________ > 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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