Original Posted By: "Jack Phillips"
Subject: Re: Pietenpol-List: Electtric plane> > All of the electric-engined aircraft that I'm aware of have been very > light and very sleek. I've often wondered if those are absolutely > necessary. Could an Piet fly with an electric engine? No doubt it > would require more battery storage, but the Yuneec E430 apparently > only has 158 lbs of batteries on board. Our Piet can hold 26 gal of > fuel, so that's 156 lbs right there. I suspect that the electric > motor weighs much less than a fully-equipped C-85, so maybe there's > another 100 lbs. If you really wanted to, I guess you could make the > front cockpit a battery space, so that there's another 170 lbs. Would > a 4-500lb battery pack fly a Piet?> -- > ---> > Jeffrey H. Boatright, Ph.D.> Associate Professor of Ophthalmology> Emory University School of Medicine> Editor-in-Chief> Molecular Vision> > > > ________________________________________________________________________________
Pietenpol-List: Electtric plane
Pietenpol-List: Electtric plane
Original Posted By: Woodflier(at)aol.com
Subject: Pietenpol-List: Electtric planePerhaps this is an alternative to the model A engine?http://www.avweb.com/avwebflash/exclusi ... .htmlSteve D35________________________________________________________________________________
Subject: Pietenpol-List: Electtric planePerhaps this is an alternative to the model A engine?http://www.avweb.com/avwebflash/exclusi ... .htmlSteve D35________________________________________________________________________________
Re: Pietenpol-List: Electtric plane
Original Posted By: Jeff Boatright
Subject: Re: Pietenpol-List: Electtric planeWhy couldn't you push some of those batteries ahead of the firewall? thus helpingwith the aft CG? And possibly saving the front cockpit for pax. There is anelectric engine guru at our airport. I will ask him what he thinks. I wonderwhat RPM it runs at? WWBT (What Would Bernard Think?)Blue skies, Steve D----- Original Message -----
Subject: Re: Pietenpol-List: Electtric planeWhy couldn't you push some of those batteries ahead of the firewall? thus helpingwith the aft CG? And possibly saving the front cockpit for pax. There is anelectric engine guru at our airport. I will ask him what he thinks. I wonderwhat RPM it runs at? WWBT (What Would Bernard Think?)Blue skies, Steve D----- Original Message -----
Re: Pietenpol-List: Electtric plane
Original Posted By: Rick Holland
Subject: Re: Pietenpol-List: Electtric plane
Subject: Re: Pietenpol-List: Electtric plane
Re: Pietenpol-List: Electtric plane
Original Posted By: jb.spiegel(at)us.schneider-electric.com
Mikee-In fact, the cabanes on 41CC are slanted aft 4". So theengine mount was lengthened a bit to make up some of themoment lost by using the lighter Continental engine insteadof the Ford A engine, but moving the wing aft made up forthe rest. Thus, the nose on 41CC is pleasantly configuredwith no Jimmy Durante effect and the cabane slant isn'treally noticeable except to Piet purists.The airplane balances very nicely in all configurationsand trim forces are light with the bungee setup that I haveon it. Here's an excerpt from the archives, posted by DocMosher on the subject, perhaps adding some explanation ofwhy all this engine mount and cabane tilting stuff is needed:>Historically, most Piets come out of the jig being tail heavy>because they don't have that heavy Ford A engine on the front>end of the teeter-totter. If you increase the arm of the>engine weight of a 220# Corvair engine, for example, (move it>4 or 5 inches forward of where the Ford used to be) your Piet>will probably not be chronically tailheavy. Then, if you want,>you can tweak it by moving the wing fore or aft- usually aft ->to really set the loaded CG between your goal numbers of 22/34%Oscar ZunigaAir Camper NX41CCSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net________________________________________________________________________________Subject: Re: Pietenpol-List: Electtric plane
Mikee-In fact, the cabanes on 41CC are slanted aft 4". So theengine mount was lengthened a bit to make up some of themoment lost by using the lighter Continental engine insteadof the Ford A engine, but moving the wing aft made up forthe rest. Thus, the nose on 41CC is pleasantly configuredwith no Jimmy Durante effect and the cabane slant isn'treally noticeable except to Piet purists.The airplane balances very nicely in all configurationsand trim forces are light with the bungee setup that I haveon it. Here's an excerpt from the archives, posted by DocMosher on the subject, perhaps adding some explanation ofwhy all this engine mount and cabane tilting stuff is needed:>Historically, most Piets come out of the jig being tail heavy>because they don't have that heavy Ford A engine on the front>end of the teeter-totter. If you increase the arm of the>engine weight of a 220# Corvair engine, for example, (move it>4 or 5 inches forward of where the Ford used to be) your Piet>will probably not be chronically tailheavy. Then, if you want,>you can tweak it by moving the wing fore or aft- usually aft ->to really set the loaded CG between your goal numbers of 22/34%Oscar ZunigaAir Camper NX41CCSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net________________________________________________________________________________Subject: Re: Pietenpol-List: Electtric plane
Re: Pietenpol-List: Electtric plane
Original Posted By: "Dortch, Steven D MAJ NG NG NGB"
amazing what you can do with a couple of aluminum ladders and mother'swashing machine motorhttp://www.youtube.com/watch?v=a-tx6rPz3HYMichael----- Original Message -----
amazing what you can do with a couple of aluminum ladders and mother'swashing machine motorhttp://www.youtube.com/watch?v=a-tx6rPz3HYMichael----- Original Message -----
Re: Pietenpol-List: Electtric plane
Original Posted By: "Dortch, Steven D MAJ NG NG NGB"
The following thoughts are based on really loose, ballpark-only, calculations. I don't stake my reputation on any of it.In cruising flight, that clean little Chinese airplane with long wings probably gets by on around 10 Hp. An airplane like a Pietenpol requires something like 25-50 Hp, or anywhere from 20,000 to 40,000 watts. The most efficient currently-available storage batteries can store a little less than 60 Watt-hours per pound, which means that, at an impossible 100% efficiency, it could take more than 600 lbs of batteries to power a Pietenpol for an hour of cruising. This does not take into account the higher power demands of takeoff and climb or any regeneration during descent.If we can cover the top of our 145 sq ft wing with solar cells, we could, theoretically, get another 3000-4000 watts on average, which would extend the range a little.However, we need a little more battery development before we are ready for the electric Piet.A battery-powered motor-glider is much more likely right now.Mike Hardaway----- Original Message -----
The following thoughts are based on really loose, ballpark-only, calculations. I don't stake my reputation on any of it.In cruising flight, that clean little Chinese airplane with long wings probably gets by on around 10 Hp. An airplane like a Pietenpol requires something like 25-50 Hp, or anywhere from 20,000 to 40,000 watts. The most efficient currently-available storage batteries can store a little less than 60 Watt-hours per pound, which means that, at an impossible 100% efficiency, it could take more than 600 lbs of batteries to power a Pietenpol for an hour of cruising. This does not take into account the higher power demands of takeoff and climb or any regeneration during descent.If we can cover the top of our 145 sq ft wing with solar cells, we could, theoretically, get another 3000-4000 watts on average, which would extend the range a little.However, we need a little more battery development before we are ready for the electric Piet.A battery-powered motor-glider is much more likely right now.Mike Hardaway----- Original Message -----
Re: Pietenpol-List: Electtric plane
Original Posted By: jb.spiegel(at)us.schneider-electric.com
Yes, its a Ladder Pou or in French a Pouchel. A flying flea made out of aluminum ladders.more on it here:http://www.pouchel.com/english/index_en ... g.htmGarry Gower's in Mexicohttp://s181.photobucket.com/albums/x309/pouchelmex/Pouchel/http://s181.photobucket.com/albums/x309 ... sh/Michael ----- Original Message -----
Yes, its a Ladder Pou or in French a Pouchel. A flying flea made out of aluminum ladders.more on it here:http://www.pouchel.com/english/index_en ... g.htmGarry Gower's in Mexicohttp://s181.photobucket.com/albums/x309/pouchelmex/Pouchel/http://s181.photobucket.com/albums/x309 ... sh/Michael ----- Original Message -----
Re: Pietenpol-List: Electtric plane
Original Posted By: jb.spiegel(at)us.schneider-electric.com
some photos of the electric fleahttp://www.pouchel.com/Essai%20Pouchelec/album/index.html ----- Original Message -----
some photos of the electric fleahttp://www.pouchel.com/Essai%20Pouchelec/album/index.html ----- Original Message -----
Re: Pietenpol-List: Electtric plane
Original Posted By: Rick Holland
> Subject: Re: Pietenpol-List: Electtric plane> To: pietenpol-list(at)matronics.com>>> >> > All of the electric-engined aircraft that I'm aware of have been very> > light and very sleek. I've often wondered if those are absolutely> > necessary. Could an Piet fly with an electric engine? No doubt it> > would require more battery storage, but the Yuneec E430 apparently> > only has 158 lbs of batteries on board. Our Piet can hold 26 gal of> > fuel, so that's 156 lbs right there. I suspect that the electric> > motor weighs much less than a fully-equipped C-85, so maybe there's> > another 100 lbs. If you really wanted to, I guess you could make the> > front cockpit a battery space, so that there's another 170 lbs. Would> > a 4-500lb battery pack fly a Piet?> > --> > ---> >> > Jeffrey H. Boatright, Ph.D.> > Associate Professor of Ophthalmology> > Emory University School of Medicine> > Editor-in-Chief> > Molecular Vision> >> >> >> >>>-- Rick HollandCastle Rock, Colorado________________________________________________________________________________Date: Mon, 29 Jun 2009 10:32:30 -0600Subject: Re: Pietenpol-List: Electtric plane
> Subject: Re: Pietenpol-List: Electtric plane> To: pietenpol-list(at)matronics.com>>> >> > All of the electric-engined aircraft that I'm aware of have been very> > light and very sleek. I've often wondered if those are absolutely> > necessary. Could an Piet fly with an electric engine? No doubt it> > would require more battery storage, but the Yuneec E430 apparently> > only has 158 lbs of batteries on board. Our Piet can hold 26 gal of> > fuel, so that's 156 lbs right there. I suspect that the electric> > motor weighs much less than a fully-equipped C-85, so maybe there's> > another 100 lbs. If you really wanted to, I guess you could make the> > front cockpit a battery space, so that there's another 170 lbs. Would> > a 4-500lb battery pack fly a Piet?> > --> > ---> >> > Jeffrey H. Boatright, Ph.D.> > Associate Professor of Ophthalmology> > Emory University School of Medicine> > Editor-in-Chief> > Molecular Vision> >> >> >> >>>-- Rick HollandCastle Rock, Colorado________________________________________________________________________________Date: Mon, 29 Jun 2009 10:32:30 -0600Subject: Re: Pietenpol-List: Electtric plane