competition sites will need to reticulate power and water loss of tug fees may be a issue, but what is the profit per comp on average for fees on a fully costed model?
I assume electric self launchers are quieter? > On 18 Sep 2016, at 10:24 AM, Mike Borgelt <[email protected]> > wrote: > > Even with the new battery tech you'll only get about 1 hour endurance at > cruise power (65%)if you replace the Rotax and max (optional 31.7 US gallons) > fuel. > > Nice self launcher with good retrieve capability but you lose the "travelling > motor glider" bit. > > With electric it is probably not optimum to have the nose mounted folding > prop either. A retractable rear mounted electric motor on a streamlined > retractable pylon may give you a more efficient larger diameter propeller and > a shorter and lighter landing gear. That would > > translate into more battery capacity of course or a lower flying weight. > > Electric flight will work for self launch gliders because the power is > usually required for only a few minutes. Same for jet gliders. Doesn't work > for any kind of serious cruise capability. The other place electric will work > is in distributed power for VTOL small aircraft. > > The new battery tech makes a 600 Kg two seat VTOL aircraft possible with good > cruise speed and range but using an IC engine for cruise and battery/electric > for takeoff and landing. > > The battery tech I'm talking about is here: > http://www.solidenergysystems.com/ <http://www.solidenergysystems.com/> and > here http://www.nature.com/nature/outlook/batteries/pdf/batteries.pdf > <http://www.nature.com/nature/outlook/batteries/pdf/batteries.pdf> The > "secret sauce" appears to be the safe electrolyte. > > This outfit looks good to me because the batteries can be built on existing > Li-ion battery manufacturing equipment so no vast capital investment > required. As they say, they don't want to manufacture batteries but will > licence their chemistry so I'd expect the batteries to > > come from existing battery manufacturers and price shouldn't be too high > either. They are talking about commercial electronic applications now and > EV applications in 2018. Given the usual rules of hi tech (everything takes > longer and costs more) you may be able to > > buy these batteries around 2020 I think. > > Mike > > > > > > > > At 05:54 AM 9/18/2016, you wrote: >> âWhat he saidâ - Iâm curious about that too. >> >> Brand, $$, availability, and (importantly, also) size? >> >> My long term dream is to throw the Rotax 914F out of my Stemme and replace >> it with batteries and an electric motor, and if a combination of both >> existed that had roughly the same total mass, the result would be >> transformative (in my view). >> >> âGo ahead, make my dayâ :) >> >> Cheers, >> Simon >> >>> On 17 Sep 2016, at 8:23 PM, Peter Champness <[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> What new battery technology is that? >>> >>> On Sat, Sep 17, 2016 at 5:57 PM, Mike Borgelt < >>> [email protected] <mailto:[email protected]>> >>> wrote: >>> There is also a GP15 15 meter version under construction. Same fuselage as >>> the 13.5 M version. Nicer looking than the Diana 2. >>> The wing sure looks similar to that on a Diana 2 but with winglets. The >>> 13.5 M version wing weighs 31 Kg each side. Easy to rig by one person. >>> The 15M looks to be a seriously good competition glider with a very wide >>> wing loading range. Electric self launch too. (Fully retractable, not the >>> silly FES). >>> A welcome change from the trend to making gliders converge on the B-52. >>> There is some new battery tech on the horizon too which will mean a >>> 10Kw-hour battery weighs only 25 Kg. Allegedly will be safer than current >>> Li-ion tech too. This should be enough for a launch and subsequent climb of >>> at least 8000 feet. >>> However will the sport cope with all self launching gliders? >>> >>> Mike >>> >>> >>> >>> >>> >>> >>> >>> At 04:52 PM 9/17/2016, you wrote: >>>> The glider Ron is referring to, is the GP14 Velo http://www.gpgliders.com/ >>>> <http://www.gpgliders.com/> , which is still under construction as far as >>>> I know, and nothing to do with the Diana 2. >>>> >>>> The Diana 2 is type certified, as of last year. >>>> https://www.easa.europa.eu/system/files/dfu/TCDS_A_451_SZD-56_Diana_issue_02.pdf >>>> >>>> <https://www.easa.europa.eu/system/files/dfu/TCDS_A_451_SZD-56_Diana_issue_02.pdf> >>>> >>>> The 13.5m Diana 2 "Versus" exists and is almost certainly the best 13.5m >>>> glider. >>>> >>>> Beres Bogumià >>>> , the man behind the Diana 2 passed away earlier in >>>> the year. >>>> What happened after that is a bit murky, but my understanding is the >>>> assets were sold to SZD (there's multiple SZD's, it's confusing), who is >>>> once again producing the Diana 2, and *allegedly* producing one with a >>>> fuselage that has lower angle of attack on the ground, and an 18m stretch. >>>> >>>> >>>> >>>> >>>> On Sat, Sep 17, 2016 at 3:30 PM, Tom & Kerrie Claffey >>>> <[email protected] <mailto:[email protected]>> wrote: >>>> Nope, >>>> The Versus (13.5M experimentalà version of Diana2)à was flown by Stefano >>>> Giorgio who won the first 13.5M WGC in it. The glider Sebastian was going >>>> to fly, but they ran out of time, is a different, all new glider.à >>>> Since then the 13.5 M class is supposed to go electric self launch. >>>> I think the 15M Diana 2 is soon out of the WGC due to time fromà >>>> prototype to certification.à >>>> (There is someà limit) >>>> Having seen a few of them I would not own one, talk to Mak. >>>> Tom >>>> ... >>>> On Saturday, 17 September 2016, Ron Sanders <[email protected] >>>> <mailto:[email protected]>> wrote: >>>> Hey guys out there, >>>> Anyone know what is happening with the Diana 2 these days?? >>>> Last i heard was à a 13.5 metre version was gonna be flown by Sebastian >>>> Kawa at some GP thing and it didn't make it. >>>> Ron >>>> >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "Gliding Australia Forum" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to [email protected] <http:/??>. >>>> To post to this group, send email to [email protected] >>>> <http:/??>. >>>> Visit this group at >>>> https://groups.google.com/a/glidingaustralia.org/group/gfaforum/ >>>> <https://groups.google.com/a/glidingaustralia.org/group/gfaforum/>. >>>> >>>> >>>> >>>> -- >>>> Sent from my steam driven laptop in a dusty corner of some remote airfield! >>>> >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "Gliding Australia Forum" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to [email protected] >>>> <mailto:[email protected]>. >>>> To post to this group, send email to [email protected] >>>> <mailto:[email protected]>. >>>> Visit this group at >>>> https://groups.google.com/a/glidingaustralia.org/group/gfaforum/ >>>> <https://groups.google.com/a/glidingaustralia.org/group/gfaforum/>. >>>> >>>> >>>> _______________________________________________ >>>> Aus-soaring mailing list >>>> [email protected] <mailto:[email protected]> >>>> http://lists.base64.com.au/listinfo/aus-soaring >>>> <http://lists.base64.com.au/listinfo/aus-soaring> >>> Borgelt Instruments - design & manufacture of quality soaring >>> instrumentation since 1978 >>> www.borgeltinstruments.com >>> <http://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] <mailto:[email protected]> >>> http://lists.base64.com.au/listinfo/aus-soaring >>> <http://lists.base64.com.au/listinfo/aus-soaring> >>> >>> >>> _______________________________________________ >>> Aus-soaring mailing list >>> [email protected] <mailto:[email protected]> >>> http://lists.base64.com.au/listinfo/aus-soaring >>> <http://lists.base64.com.au/listinfo/aus-soaring> >> _______________________________________________ >> Aus-soaring mailing list >> [email protected] >> http://lists.base64.com.au/listinfo/aus-soaring >> <http://lists.base64.com.au/listinfo/aus-soaring>Borgelt Instruments - >> design & manufacture of quality soaring instrumentation since 1978 > www.borgeltinstruments.com > <http://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] <mailto:[email protected]> > http://lists.base64.com.au/listinfo/aus-soaring > <http://lists.base64.com.au/listinfo/aus-soaring>
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