Simviation Forums

Sounds cool...

Gravity  Plane...

Sounds like perpetual motion to me, which is of course impossible. Too good to be true.

I know of an submarine ROV for hydrographic work that uses a similar principle to cross oceans on a very small battery.

For an airliner though I shouldn't think so.

It runs on gravity? Isn't that a glider?

I love the way they say completely free of fossil fuels ....... So manufacturing the Helium and compressing both that and the air for ballast don't require anything apart from a man blowing into a bag.

I'm with Doug on this one ...... and await the time when we're proved wrong.

If you are willing to wait long enough solar/wind power could provide all the energy for the needed materials and manufacturing.

Of course, this isn't really a plane...it's a gravity propelled airship. There's no reason that the concept can't work in theory...it's just finding a use for something with this weird set of limitations. Perhaps long range cargo?

There is no such thing as an equal exchange of energy. If it refills its compressed air using ram air turbines while gliding, that would create drag. The craft would lose more energy to the drag than it could ever generate with comprssed air. Am I making sense? I don't feel like I explained that very well...

Personally, I assumed that they were only describing the primary method of compressing the gasses...energy exchange limitations would affect things just as you say.

Some form of solar energy would also be required to my mind...either solar heating of the gasses to aid expansion and create additional lift or active solar panels to create electricity to augment the various processes.

...it's being designed some place in Nevada.

Would that be Area 51, where the Aliens live...?

Paul...... ... ...!

...it's being designed some place in Nevada.

Would that be Area 51, where the Aliens live...?

Paul...... ... ...!

You moved?

C'mon, those guys in Nevada have been supposedly back engineering alien space ships! I think they must have some much more interesting propulsion and gravity defeating systems than helium and compressed air! Ever heard of 'element 115', 100% mass to energy reactors and 'gravity generators'?

Craft, which generate their own gravity to counteract the effect of Earths. Then using directional gravity generators so powerful they literally distort time and space in split second intervals in order to move around great distances in space otherwise inaccessible through conventional propulsion systems.

It's all word from suspect sources of course, but so is your 'perpetual motion plane' and to be honest I

[quote]C'mon, those guys in Nevada have been supposedly back engineering alien space ships! I think they must have some much more interesting propulsion and gravity defeating systems than helium and compressed air! Ever heard of 'element 115', 100% mass to energy reactors and 'gravity generators'?

Craft, which generate their own gravity to counteract the effect of Earths. Then using directional gravity generators so powerful they literally distort time and space in split second intervals in order to move around great distances in space otherwise inaccessible through conventional propulsion systems.

It's all word from suspect sources of course, but so is your 'perpetual motion plane' and to be honest I

Sounds like perpetual motion to me, which is of course impossible. Too good to be true.

this sounds possible tho

i wouldent like it   even though its over a long distance  the up and down would annoy me  ;D

Theoretically it is possible, assuming you have enough battery power to run the pumps. But then again, all to often  theoretical ideas turn out to be impractical objects.

And what about winds aloft? How is such a delicate propulsion system gonna cope with 100kts trade winds?