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Old January 24th, 2018, 02:22 PM   #1
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Could this actually work?

Let's assume, for a moment, that it was possible to generate a black hole at a fixed distance from a space craft. The theory is that the black hole would draw the ship forward. Since the black hole is generated from the ship itself, it would remain the same distance away while pulling the ship after it.

Now I'm no physicist, but I believe that such an arrangement would violate a couple of laws of physics. Comments?
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Old January 24th, 2018, 02:36 PM   #2
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The first thing that comes to mind is what makes the black hole keep moving from the ship as it approaches? There is a very strong gravitational force between the black hole and any matter around it. So it would require a very strong force to overcome that. And such a force would in fact be pushing them away from each other.

That of course completely disregards the impossibility of your initial premise, that one could create a black hole at will.
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Old January 24th, 2018, 04:50 PM   #3
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Originally Posted by Mr Bombastic View Post
Let's assume, for a moment, that it was possible to generate a black hole at a fixed distance from a space craft. The theory is that the black hole would draw the ship forward. Since the black hole is generated from the ship itself, it would remain the same distance away while pulling the ship after it.

Now I'm no physicist, but I believe that such an arrangement would violate a couple of laws of physics. Comments?
The force that keeps the black hole the same distance from the ship would have to be at least as strong as the force that draws the ship towards the black hole. The two forces would negate each other.

This is not that different then trying move a sailboat by putting a large fan on the deck to create a wind.
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Old January 24th, 2018, 08:43 PM   #4
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Originally Posted by RNG View Post
The first thing that comes to mind is what makes the black hole keep moving from the ship as it approaches? There is a very strong gravitational force between the black hole and any matter around it. So it would require a very strong force to overcome that. And such a force would in fact be pushing them away from each other.

That of course completely disregards the impossibility of your initial premise, that one could create a black hole at will.
If the ship could stay beyond the Event horizon but use the gravitational force as energy to travel. bodies in space including black holes are always in motion. now the problem was how do you steer the black hole in the direction you wish to travel. or you could use the Blackhole's gravity in a slingshot maneuver.

Last edited by TNVolunteer73; January 24th, 2018 at 08:46 PM.
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Old January 24th, 2018, 09:10 PM   #5
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Originally Posted by Mr Bombastic View Post
Let's assume, for a moment, that it was possible to generate a black hole at a fixed distance from a space craft. The theory is that the black hole would draw the ship forward. Since the black hole is generated from the ship itself, it would remain the same distance away while pulling the ship after it.

Now I'm no physicist, but I believe that such an arrangement would violate a couple of laws of physics. Comments?
How do you propose generating a black hole?
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Old March 4th, 2018, 11:25 AM   #6
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How do you propose generating a black hole?
Yah, well, we probably need to develop fusion as a controlled power source first. Then you need to develop the materials science to develop materials (or reinforcement fields, or something) to allow the material to withstand the severe gravity/torsion effects of working in & around high gravity.

Controlled fusion power always seems to be 50 years away. With unlimited power from fusion, I'd say another 25-30 years after that to get the materials science up to par. Then you'd need an indeterminate amount of time to develop the physics for generating a black hole.

We know how nature does it - by taking a star beyond Chandrasekhar's limit & allowing it to nova. Whether we can find some less dramatic way to make a black hole is the question. Of course, we could always capture some of the energy from the nova itself.

From the physics to the engineering - but how long that would take depends on the physics. Likely quite a while, though. Maybe a couple of centuries, after we have fusion & the materials science up to snuff?
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Old March 4th, 2018, 11:58 AM   #7
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Make it so!

Or see https://en.wikipedia.org/wiki/Black_hole_starship

"Criteria[edit]

"According to the authors, a black hole to be used in space travel needs to meet five criteria:[5]

o has a long enough lifespan to be useful,
o is powerful enough to accelerate itself up to a reasonable fraction of the speed of light in a reasonable amount of time,
o is small enough that we can access the energy to make it,
o is large enough that we can focus the energy to make it,
o has mass comparable to a starship."

An interesting take. The article discusses using the black hole itself as the spaceship engine. Good to know that there are people out there already who are thinking about this topic, & the issues involved.
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Old March 4th, 2018, 08:52 PM   #8
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Originally Posted by Mr Bombastic View Post
Let's assume, for a moment, that it was possible to generate a black hole at a fixed distance from a space craft. The theory is that the black hole would draw the ship forward. Since the black hole is generated from the ship itself, it would remain the same distance away while pulling the ship after it.

Now I'm no physicist, but I believe that such an arrangement would violate a couple of laws of physics. Comments?
I am no Physicist either but have an intense interest in Black Hole's if they exist. Einstein will take you to the event horison (the last letter of the alphabet does not work on my laptop) but no further and any deeper is all conjecture. I have a greater interest in a Quark Star that may or may not exist. A Neutron Star has been proved to exist and if I drop a quarter one meter above the neutron star it hits the surface at four million miles per hour.

It seems natural to me that a millisecond Pulsar is a disk and not a sphere.
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