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Propellant Recycling

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sevenperforce

sevenperforce

Posted
Posted (edited)
3 hours ago, Albert ninestein said:

As there are some Physics experts on this forum please can someone explain why my idea of a free energy machine doesn't work.

[snip]

Let's assume the blimp is contained within a very tall frame so it only goes up or down.

Would the energy used to compress the gas to make the blimp return to earth and the energy required to wind the tether back in during the descent be greater than any energy produced during the ascent?

Yes. You could, in fact, calculate the required energy to compress the gas by solving for the amount of energy produced during the ascent. Plus efficiency losses.

Energy out and energy in (factoring in efficiency losses) are always equal.

Edited by sevenperforce
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Albert ninestein

Albert ninestein

Posted
Posted
5 minutes ago, sevenperforce said:

Yes. You could, in fact, calculate the required energy to compress the gas by solving for the amount of energy produced during the ascent. Plus efficiency losses.

Energy out and energy in (factoring in efficiency losses) are always equal.

Thanks, I assumed this may be the case. I don't have the skills to make a detailed calculation.

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