Is it possibly to have a airplane that is powered by water?

Question

And wind.

Answer 1

Here we go again...No, No, ignore silly "water" power sleight of hand, it is a scam.

Answer 2

no not yet.

H2O power is still to complex to be put into cars

wind power? how?

the props will produce some current if they are hooked up to the generators, but not no way enough power to make a plane to take off.

Answer 3

It is! But the amount of money that would take is unbelievable and our country has a pretty big debt, thats why we keep making gas powered cars that will be no use in the future, (because its cheaper)

Answer 4

Sort of.    Water has been used in older jet engines but not as a fuel source.

Water can be used to augment the engine performance allowing additional fuel to be burned than would be otherwise be possible .  

Older engines like a JT-8D and the old 707 & some turbo props used "Water Injection" to boost power for takeoff (especially on hot days).  Water was usually mixed with methanol and at takoff the water was injected into the compressor of the jet. THe water would cool  the compressed air by evaporative cooling and  it would get converted to steam as it passed through the burners.

Cooling the compressed air  increases the efficiency of the compressor and allows for denser air to be fed into the burner section of the turbine.   Denser air contains more oxygen which allows additional fuel to be burnt increasing power output.  

You could sort of call this a "poor mans after burner" as it was an effective means of increasing thrust for takeoff by increasing mass flow rate through the engine .  The down side to this increased power output is an increase in noise and smoke from th engine.

When I was in the Navy back in 1982 I caught a MAC (Military Air Lift Command) flight from Pensacola FL to Washington DC via a stop in Lousiana. It was a hot summer day and the takeoff  out of Lousiana was delayed for a water truck to fill tanks next to each engine. I can personally attest to the added boost in power (and noise) the water added as it was dumped into the engine at take off.  A dramatic diffeence from the earlier normal take off out of Fla a few hours earlier.

Answer 5

no and no

Water cannot generate any power, despite what a bunch of scam web sites say.

You cannot use wind generated by your motion to cause that motion, that is perpetual motion and not possible.

.

Answer 6

I wouldn't think so, because you'd have to have a lot of water to power the plane and that would make it heavy, then you would have to add in the weight of all the passengers.

Answer 7

The problem here is what exactly you mean by 'powered'.  True, water can be split into hydrogen and oxygen by electrolysis and the resulting hydrogen is combustable, but the key is that you need to use electricity to split it in the first place.  So, while the water is transducing electrical energy into thermal, it's not really the source of the power.

As for wind, it again means what you mean by 'powered'.  In a sense, all airplanes are 'powered' by wind (or at least differences in air pressure), but not in the way that I think you mean here.  You can't stick a wind turbine on top of an airplane and get useful energy out of it, because you'd need to put in more energy to overcome the drag of the wind than you'd get back (see the first law of thermodynamics).  

There is, however, an exception: when then plane is slowing down to land.  Here, the plane wants drag forces to be larger than the force of the engine.  Conceivably, one could design a system to run turbines off of that drag, generating some power.

Answer 8

sort of...

water itself is not a fuel. you can pass electricity through water, generating hydrogen and oxygen (H2 ans O2). hydrogen, when mixed with oxygen, is extremely flammable, but still has less energy than gasoline.

to power a jet by it, you could probably just build a jet engine built to run off hydrogen, and then fill up the tank of hydrogen. you would not be able to keep it running forever though because that would be perpetual motion. energy is lost when making the hydrogen, and more energy is lost as heat when the engine is moving, and if you had some way of collecting wind, it would still cause air resistance, slowing the jet down and losing energy. it is the same with cars. no perpetual motion possible.