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Airbus electric aircraft takes to the skies
Imagine taking a peaceful flight, gliding along without much noise or any fuel, effortlessly descending into the airport without a trace of emissions. (www.cnn.com) 更多...Sort type: [Top] [Newest]
A properly functional "Zero Emissions" aircraft is probably at least a decade away. If current battery technology only allows this small plane to remain aloft for 30 minutes, I don't see how it can be that much use even as a training aircraft - a flight school would need a fleet of several dozen just to accomodate flying time throughout the day. It's a great concept, but huge advancements in technology will be required to make it feasible.
I agree with "zero emissions": it's simply emissions shifting to somewhere- and sometime- else. And with every energy transformation, there is some energy loss. The piece did mention that the cost is 2¢ per hour. It also mentioned that the batteries, good for 0.5 hour, have 60kw. That puts its use at 120 kw per hour. At our local average of about 11¢ per kwh, that puts the cost at around $13.20 an hour, not 2¢. It IS a lot less than av-gas, etc, but I hope whoever did these calculations didn't also engineer the plane!
Can someone explain how this plane or any electrical car can have zero emissions? Where does the electricity come from? Is it only solar powered?
It's all in the advertising and how it is perceived... There is no such thing as Zero Emissions... That does not exist...
This may be closer than you think to zero emission. France produces most of its electricity with nuclear which is as close to zero emissions as you can get. As with solar, emissions are required to build the plant. At least nuclear provides the power at night when you want it for charging for the next day's flights.
Well that does make a better explanation. Too bad nobody is building nuclear plants.
Electricity can be generated in different ways like: hydro-electric dam, solar plant, wind generator farms... Yes its clean energy
Uh, no it's not. You're forgetting the transportation costs to get it to the factory to install in the car (or plane). There's the cost to get raw materials to the battery factory. The nickel contained in the Prius' battery is mined and smelted at a plant in Ontario that has caused so much environmental damage to the surrounding environment that NASA has used the 'dead zone' around the plant to test moon rovers.
In 2007, a report commissioned by an auto industry trade group insisted that when you factor in the waste generated during production, the notoriously gas-guzzling Hummer is actually greener than the Prius
Sources:
http://www.ncpa.org/sub/dpd/index.php?Article_ID=14304
http://science.howstuffworks.com/science-vs-myth/everyday-myths/does-hybrid-car-production-waste-offset-hybrid-benefits.htm
In 2007, a report commissioned by an auto industry trade group insisted that when you factor in the waste generated during production, the notoriously gas-guzzling Hummer is actually greener than the Prius
Sources:
http://www.ncpa.org/sub/dpd/index.php?Article_ID=14304
http://science.howstuffworks.com/science-vs-myth/everyday-myths/does-hybrid-car-production-waste-offset-hybrid-benefits.htm