[EVDL] Odd assortment of solar vehicles and the aerodynamic ramifications of solar panels as a wing.
On Sun Mar 08 11:01:39 PDT 2015 ev@lists.evdl.org said: I've been researching solar vehicles. There is a ration of panel to size of vehicle to efficiency that is very interesting. A couple of designs were small cars with huge solar panels. One and I think one of the first was simply a velomobile with a flat solar panel placed on top. Two in the last few solar challenges were very odd. One an airplane like vehicle with a large panel on top. Another a long rectangle with an EVen larger panel mounted above and sticking out on all sides. If anyone can chime in on the specifications of these rather odd vehicles I'd be interested. Cruising speed,, weight, motor etc. They seemed very practical. Lawrence Rhodes From what I've seen of those, I'd change that practical to impractical. -- Worlds only All Electric F-250 truck! http://john.casadelgato.com/Electric-Vehicles/1995-Ford-F-250 ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] Odd assortment of solar vehicles and the aerodynamic ramifications of solar panels as a wing.
I've been researching solar vehicles. There is a ration of panel to size of vehicle to efficiency that is very interesting. A couple of designs were small cars with huge solar panels. One and I think one of the first was simply a velomobile with a flat solar panel placed on top. Two in the last few solar challenges were very odd. One an airplane like vehicle with a large panel on top. Another a long rectangle with an EVen larger panel mounted above and sticking out on all sides. If anyone can chime in on the specifications of these rather odd vehicles I'd be interested. Cruising speed,, weight, motor etc. They seemed very practical. Lawrence Rhodes https://www.youtube.com/watch?v=KuG4__YYlOk http://www.bbc.com/news/uk-england-cambridgeshire-24419452 http://sciencelearn.org.nz/Science-Stories/Harnessing-the-Sun/Sci-Media/Images/Solar-Kiwi http://thefraserdomain.typepad.com/energy/2006/07/houston_ms_high.html http://earthtechling.com/2013/07/vehicule-solaire-eclipse-aims-for-world-solar-challenge-gold/ https://www.google.com/search?q=world+solar+challenge+odd+vehiclesbiw=1279bih=655tbm=ischsource=lnmssa=Xei=4Yr8VIblH9TYoASkuoGYCwved=0CAYQ_AUoAQdpr=1#tbm=ischq=world+solar+challenge+cruiser+classimgdii=_ -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150308/c7681bea/attachment.htm ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Odd assortment of solar vehicles and the aerodynamic ramifications of solar panels as a wing.
Sunpower now makes some very nice flexible panels. You could get an airifoil effect from them, and they are very efficient. However, I don't think it is a useful exercise trying to get lift or ground effect from solar panels. You don't want lift as it would be less stable and a poorer road handling machine, you will never go fast enough to get a ground effect that matters. On Sun, Mar 8, 2015 at 7:52 PM, EVDL Administrator via EV ev@lists.evdl.org wrote: On 8 Mar 2015 at 16:21, Lawrence Rhodes via EV wrote: I have questions about how a solar panel acts like a wing on the top of a vehicle. Can it be made into an advantage. PV panels are flat, aren't they? I don't see why one would act like a wing unless it were shaped like a wing. That said, I'm sure it would affect the vehicle's aerodynamics somehow. I just don't know how, or what you'd do to try to compensate for it. If it could be made to act as a wing, I don't see how that would help you, unless you plan to fly. If you get lift from it, you risk losing control; if the opposite, you increase effective mass and thus rolling friction. Maybe I'm missing something. Assuming you're more of an engineer than I am (calculus was a LONG time ago for me, and I haven't really used it in over 40 years), you might try contacting some of the students who've worked on entries in Australia's World Solar Challenge. Maybe they'd let you look at some of their engineering work. I haven't followed it much in recent years. However, I seem to recall that in the 1990s most of them at least partly furled their PV panels to reduce aero disruption when under way, expecting to capture most of their photons when stopped. But I might be remembering that incorrectly. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to evpost and etpost addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA ( http://groups.yahoo.com/group/NEDRA) -- To invent, you need a good imagination and a pile of junk. Thomas A. Edison http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 585-6737 Land (919) 576-0824 https://www.google.com/voice/b/0?pli=1#phones Google Phone (919) 631-1451 Cell michael.e.r...@gmail.com michael.e.r...@gmail.com -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150308/6099364c/attachment.htm ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Odd assortment of solar vehicles and the aerodynamic ramifications of solar panels as a wing.
Whoa...John this coming from you, a guy with a 1995 Ford F-250 weighing 4 tonsIf you had that setup in a Mazda B2000 with lithium you might have something. I'm talking aerodynamics, light weight and solar. I have questions about how a solar panel acts like a wing on the top of a vehicle. Can it be made into an advantage.Lawrence Rhodes From: John Lussmyer cou...@casadelgato.com To: Electric Vehicle Discussion List ev@lists.evdl.org; Lawrence Rhodes primobass...@sbcglobal.net Sent: Sunday, March 8, 2015 11:23 AM Subject: Odd assortment of solar vehicles and the aerodynamic ramifications of solar panels as a wing. On Sun Mar 08 11:01:39 PDT 2015 ev@lists.evdl.org said: I've been researching solar vehicles. There is a ration of panel to size of vehicle to efficiency that is very interesting. A couple of designs were small cars with huge solar panels. One and I think one of the first was simply a velomobile with a flat solar panel placed on top. Two in the last few solar challenges were very odd. One an airplane like vehicle with a large panel on top. Another a long rectangle with an EVen larger panel mounted above and sticking out on all sides. If anyone can chime in on the specifications of these rather odd vehicles I'd be interested. Cruising speed,, weight, motor etc. They seemed very practical. Lawrence Rhodes From what I've seen of those, I'd change that practical to impractical. -- Worlds only All Electric F-250 truck! http://john.casadelgato.com/Electric-Vehicles/1995-Ford-F-250 -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150308/20caa557/attachment.htm ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Odd assortment of solar vehicles and the aerodynamic ramifications of solar panels as a wing.
On 8 Mar 2015 at 16:21, Lawrence Rhodes via EV wrote: I have questions about how a solar panel acts like a wing on the top of a vehicle. Can it be made into an advantage. PV panels are flat, aren't they? I don't see why one would act like a wing unless it were shaped like a wing. That said, I'm sure it would affect the vehicle's aerodynamics somehow. I just don't know how, or what you'd do to try to compensate for it. If it could be made to act as a wing, I don't see how that would help you, unless you plan to fly. If you get lift from it, you risk losing control; if the opposite, you increase effective mass and thus rolling friction. Maybe I'm missing something. Assuming you're more of an engineer than I am (calculus was a LONG time ago for me, and I haven't really used it in over 40 years), you might try contacting some of the students who've worked on entries in Australia's World Solar Challenge. Maybe they'd let you look at some of their engineering work. I haven't followed it much in recent years. However, I seem to recall that in the 1990s most of them at least partly furled their PV panels to reduce aero disruption when under way, expecting to capture most of their photons when stopped. But I might be remembering that incorrectly. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to evpost and etpost addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
