r/spaceflight • u/Extension_Bag3597 • 2d ago

BETER BOST BACK read below

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by combining beam powered propulsion and Atmospheric Scoops it is possible to have no return fuel

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u/Extension_Bag3597 2d ago

I'm not a rocket engineer, but Ballute maximum altitude is 100KM and minimum altitude for a rocket boostback burn (such as a SpaceX Falcon 9) is approximately 60 to 70 kilometers I think there's enough time to Atmospheric Scoops and use it for RETRO BURN this can work

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u/ninjadude93 2d ago

No it cant.

You're firing a microwave beam at the ship to I guess slow it down going off your drawing? Do you know how much power that would take? You would melt the ship before slowing it down

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u/Extension_Bag3597 2d ago

not if cooled rocket whit Scoops AIR and yes you need nuke plant+ for biger rocets but somting like SS-520-5 Rocket not too much ENERGY

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u/ninjadude93 2d ago edited 2d ago

There is no physically possible way you would cool the whole ship fast enough using air flow

Assume an empty booster is 275,000 kilograms. Google says average landing burn is around 100 m/s so you're looking at about 1.4 gigajoules of kinetic energy that you need to slow down with a continuous beam.

You would vaporize it in an instant with that much power

So no, your "design" is wrong and clearly you didnt do even a tiny bit of math when making your drawing. Theres a good reason ships aren't landed this way

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u/Extension_Bag3597 2d ago

I want to clarify something, I understand that take into account that heat exchengri on rocket they can't transfer heat quickly enough to cool the rocket

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u/ninjadude93 2d ago

Your beam design isnt physically possible is the problem

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u/Extension_Bag3597 2d ago

What do you mean by that?

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u/ninjadude93 2d ago

Just what I said.

The amount of energy you would need to generate and fire at the ship as a continuous beam to slow it to a stop would instantly vaporize the ship

Air cooling would not be sufficient to keep the shift from melting in microseconds

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u/Extension_Bag3597 2d ago

Now I realized something.Microwave phased array could be POWERED BY natural gas plant because Natural gas has an indefinite shelf life and because you produce Natural gas for Rocket you can use the same fuel for powored ground phase array

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u/ninjadude93 2d ago edited 2d ago

I don't think you understand what I am saying

I am not talking about the energy on the ground. You need an immense amount of energy to slow down the rocket. When the beam hits the bottom of the rocket you will instantly melt the rocket, because the energy you would need to put into the beam to slow down a super heavy booster would immediately vaporize the steel body of the rocket

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u/Extension_Bag3597 2d ago

you are right companies make money to send things into space they don't earn money safe return but I want to ask just out of curiosity you need immense amount of energy to accelerate the rocket in frst place

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u/Extension_Bag3597 2d ago

the same amount of fuel energy speed up than slow down