FTL with, bendalloy, cadmiun and steel?

[Alumínio he/him]

Once again, forgive me, English is not my native language, but let's get to theory. If I make a metal mind that creates a huge bendaloy bubble that takes my entire ship and inside it, in the part where the passengers are (coated with aluminum perhaps) I put a cadmium bubble, in addition to making the ship go faster with F-steel (maybe that's why steel mind awakens) I think this would be the closest to FTL, it would need a way for the bubble to move with the ship, but maybe iron stations 1, 2, 3... that we saw in the secret projects are a bendaloy bubble tunnel perhaps?

[alder24]

46 minutes ago, Alumínio said:

Once again, forgive me, English is not my native language, but let's get to theory. If I make a metal mind that creates a huge bendaloy bubble that takes my entire ship and inside it, in the part where the passengers are (coated with aluminum perhaps) I put a cadmium bubble, in addition to making the ship go faster with F-steel (maybe that's why steel mind awakens) I think this would be the closest to FTL, it would need a way for the bubble to move with the ship, but maybe iron stations 1, 2, 3... that we saw in the secret projects are a bendaloy bubble tunnel perhaps?

Have you ever heard about the Alcubierre drive? It compresses spacetime in front of a spaceship and expands it behind it, allowing for FTL - think Star Trek's warp drive. Well, we have bendalloy that pushes on the time and cadmium that pulls on it - which is exactly how you make the Alcubierre drive. It's not about putting the entirety of the ship in one bubble, it's about warping the space time around it to be both compressed in front of it and expanded behind the spaceship, so the ship could travel on top of this wave that was created due to warping of spacetime. You don't move the ship through spacetime, you move spacetime around the ship - that's the only way to achieve faster than light travel (and wormholes, but Elsecalling is better). F-steel can't do it because you physically can't move faster than light. 

Savants can anchor speed bubbles to themselves, but on a big enough vehicle, like a train, the bubble will get anchored to it anyway. 

Spoiler

Steeldancer (paraphrased)

Have you ever heard of the Alcubierre Drive? 

Brandon Sanderson (paraphrased)

Yes, I know about the Alcubierre drive. 

Steeldancer (paraphrased)

So, if we took two speed bubbles--mechanized, because Allomancers aren't powerful enough to pull it off--could we create a functioning Alcubierre drive?

Brandon Sanderson (paraphrased)

You are theorizing in the right direction. 

FanX Spring 2019 (April 19, 2019)

[Alumínio he/him]

1 hour ago, alder24 said:

Have you ever heard about the Alcubierre drive? It compresses spacetime in front of a spaceship and expands it behind it, allowing for FTL - think Star Trek's warp drive. Well, we have bendalloy that pushes on the time and cadmium that pulls on it - which is exactly how you make the Alcubierre drive. It's not about putting the entirety of the ship in one bubble, it's about warping the space time around it to be both compressed in front of it and expanded behind the spaceship, so the ship could travel on top of this wave that was created due to warping of spacetime. You don't move the ship through spacetime, you move spacetime around the ship - that's the only way to achieve faster than light travel (and wormholes, but Elsecalling is better). F-steel can't do it because you physically can't move faster than light. 

Savants can anchor speed bubbles to themselves, but on a big enough vehicle, like a train, the bubble will get anchored to it anyway. 

  Reveal hidden contents

Steeldancer (paraphrased)

Have you ever heard of the Alcubierre Drive? 

Brandon Sanderson (paraphrased)

Yes, I know about the Alcubierre drive. 

Steeldancer (paraphrased)

So, if we took two speed bubbles--mechanized, because Allomancers aren't powerful enough to pull it off--could we create a functioning Alcubierre drive?

Brandon Sanderson (paraphrased)

You are theorizing in the right direction. 

FanX Spring 2019 (April 19, 2019)

So why are there iron stations in secret projects? Are these satellites for landing ships? I honestly thought that the FTL way would be to connect stations and not that the ship itself could use faster-than-light travel, another thing I thought might be possible was to use the transport surge to go to the spiritual realm at point A and exit at point B

[alder24]

11 minutes ago, Alumínio said:

So why are there iron stations in secret projects? Are these satellites for landing ships?

Yes, those are spaceports - Waystations as they were called in Yumi. 

13 minutes ago, Alumínio said:

I honestly thought that the FTL way would be to connect stations and not that the ship itself could use faster-than-light travel, another thing I thought might be possible was to use the transport surge to go to the spiritual realm at point A and exit at point B

That's how Elsecalling and Oathgates are working. You can certainly create spaceports like this using Rosharan spren and fabrials. It's possible Rosharans use this as their own method of transportations instead of Scadrian FTL tech (because they are in conflict, why would they share this tech with their enemy, Rosharans have to have their own way of FTL).

Isles of the Emberdark spoilers:

Spoiler

And it has been confirmed that there are at least three different methods of building spaceships, originating from three different words. IotE ch 11:

Quote

The old machinery needed constant attention; the Dynamic—as fond as Starling was of it—wasn’t exactly the most cutting edge of ships. Indeed, it was something of a mongrel. Rosharan antigrav technology, Dhatrian aethers for providing thrust and engine power, a Scadrian composite metal hull. Never mind that all three technological strains had produced their own viable starships without the others.

 

[DrPhysics he/him]

On 11/2/2024 at 11:07 AM, alder24 said:

Have you ever heard about the Alcubierre drive? It compresses spacetime in front of a spaceship and expands it behind it, allowing for FTL - think Star Trek's warp drive. Well, we have bendalloy that pushes on the time and cadmium that pulls on it - which is exactly how you make the Alcubierre drive. It's not about putting the entirety of the ship in one bubble, it's about warping the space time around it to be both compressed in front of it and expanded behind the spaceship, so the ship could travel on top of this wave that was created due to warping of spacetime. You don't move the ship through spacetime, you move spacetime around the ship - that's the only way to achieve faster than light travel (and wormholes, but Elsecalling is better). F-steel can't do it because you physically can't move faster than light. 

Except you can't make an Alcubierre drive with speed/slow bubbles. Since the bubbles also scale gravity to act as expected, the bending breaks down. When that happens, general relativity breaks down (there are other signs too, like bubbles don't destroy everything on the boundary which the gravitational discontinuity you need would) and you can't apply the math.

FTL could be as simple as finding a way to get a ship to enter a speed bubble without changing direction (like on a fixed rail), then messing with identity so that the bubble attaches to the ship and travels with it. Stack up a few, and you break the external speed of light without breaking the internal speed of light pretty quickly.

Surgebinders could probably warp spacetime that way, though. It's tough to tell because we haven't seen enough about what happens in the immediate vicinity of someone using gravitational lashings (the tidal forces that occur in the flip from the lashed gravity region to the regular gravity region). 

Edited November 4, 2024 by DrPhysics