Balloons

[YAD061]

Helium ones. Imagine a valve on a bottle of He filling a balloon, a really big balloon, and there are loads of bottles filling it up. The balloon has engines and flying controls and a pilot, now it is full of helium it rises, he closes the valves. Now he wants to come down again so he fires up a load of compressors that liquidise the He and bung it back in the tanks, the He is replaced with air via one way valves and it becomes heavy again.

Would this work?

[K87]

theoretically yes, but there would surely be energy loss somewhere.

what would run the compressors?

[Slikk]

K87 said:

theoretically yes, but there would surely be energy loss somewhere.

what would run the compressors?

V12 twin turbo diesel naturally

[YAD061]

Slikk said:

K87 said:

theoretically yes, but there would surely be energy loss somewhere.

what would run the compressors?

V12 twin turbo diesel naturally

make your mind up forced or natual induction......

[TooLateForAName]

depends - are all these gas bottles on the ground connected with long thin pipes?

If you're just carrying the stuff around then you are not altering your vehicle weight so you can forget taking off.

[Slikk]

YAD061 said:

Slikk said:

K87 said:

theoretically yes, but there would surely be energy loss somewhere.

what would run the compressors?

V12 twin turbo diesel naturally

make your mind up forced or natural induction......

[K87]

TooLateForAName said:

depends - are all these gas bottles on the ground connected with long thin pipes?

If you're just carrying the stuff around then you are not altering your vehicle weight so you can forget taking off.

good point

[aclivity]

Liquefying He would be quite difficult - requires a very high pressure. Why not have a 2-chamber balloon, one chamber has a fixed volume of He, and the other you fill or extract fresh air. That would affect the lift of the overall balloon?

Or has this been done already?

[TheLurker]

K87 said:

TooLateForAName said:

depends - are all these gas bottles on the ground connected with long thin pipes?

If you're just carrying the stuff around then you are not altering your vehicle weight so you can forget taking off.

good point

The He would displace the air in the baloon, so reducing the overall weight.

[YAD061]

K87 said:

TooLateForAName said:

depends - are all these gas bottles on the ground connected with long thin pipes?

If you're just carrying the stuff around then you are not altering your vehicle weight so you can forget taking off.

good point

is it? if you fill a large ballooon with lighter than air gas it will

[hectic]

Better than that...

...if you could produce a sufficiently rigid and light material that could be evacuated (i.e.: so it contains a vaccuum) then you could use this as the lifting body.


H

[JimBigLicks]

Is it on a conveyor belt?

Is the diesel engine remapped?