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Discussion Starter #1 (Edited)
There is another thread about an all-electric airplane designed by students: http://www.lvrj.com/news/this-idea-could-fly-students-design-all-electric-plane-140119693.html :)

But I just got a news flash about a small vehicle that can drive on the highway as well as fly :D, and the cost seems to be "reasonable" at about $250,000: http://www.gizmag.com/terrafugia-flying-car-test-flight/23141/



It uses an ICE but I wonder just how much power is really required and if it would be practical to use batteries and an electric motor? The relatively high prop speed makes it practical to use small motors such as are already used in R/C planes, so it seems the concept could be scaled up to the point where the vehicle could carry one or two people. Maybe also consider a hybrid design? :cool:

Here is a commercial single seater electric plane for under $40,000:
http://www.gizmag.com/flynano-microlight-aircraft/18411/
 

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I just saw some kind of prototypes in movies and i`m just curious if cant be made planes with the solar panels ? Anyway they spends most of its time in the air above clouds ,maybe the cost for such a plane are high but the fuel price isnt cheap too... its possible to have such kind of planes in near further ?
 

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On average (as a general "rule of thumb") modern photovoltaics (PV) solar panels will produce 8 - 10 watts per square foot of solar panel area.
Then you have the angle the solar is pointing, like when banking, climbing, or decending.
Maybe 5-10 years ago. Most commercial panels are double that now (~20% eff) and if you can afford a solar plane you can probably spring for much better cells than that.

Angle when banking isn't going to matter unless you're trying to make yourself dizzy, and for the others it's not enough to matter much.
 

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seeing the model presented, I don't belive there is enough surface even at double.
then you have to compsensate for the wieght added for the panells.
Now for one like the solar impulse it is possible but i doubt they could fly with the added wieght of multi-passenger mode.
 

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Discussion Starter #8 (Edited)
A solar powered balloon (or a blimp or dirigible) may be the most practical. Plenty of surface at all angles for solar cells. No power needed to ascend or descend. (Well maybe some, if you must generate hot air, but if you take a politician along, you can get plenty of that for free). :p

http://www.engadget.com/2011/10/24/solar-ship-takes-to-the-skies-powered-by-good-deeds-and-sunshine/

http://inhabitat.com/solar-powered-airship-could-offer-emissions-free-cargo-hauling/

http://gadgets.softpedia.com/news/U...n-in-Solar-Powered-Spy-Dirigible-1932-01.html
 
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