Remember the EM Drive?

[Gingerbread Demon]

https://hacked.com/scientists-confirm-impossible-em-drive-propulsion/

Seems they were able to reproduce some kind of result.

IF this can be made a viable technology it's certainly fascinating for sure..

 

[Gov Kodos]

No, nothing so exciting as that.

http://www.wired.com/2015/07/really-propellantless-space-drives-still-not-thing/

http://www.iflscience.com/no-em-drive-will-not-lead-warp-travel-any-time-soon

http://io9.com/no-german-scientists-have-not-confirmed-the-impossibl-1720573809

 

[Gingerbread Demon]

^^ That is disappointing

 

[Dryson]

A question I have is, how would any drive or rocket engine operate in the hole in the center of the Universe where no matter of a known type can be detected? Not even Dark Matter can be detected.

 

[Gov Kodos]

The same as it would anywhere else.

 

[publiusr]

I've seen electrical motors and the like jerk when they are first turned on. Probably another artifact.

A bit more likely: http://arc.aiaa.org/doi/abs/10.2514/6.2015-3958

Then too: http://selenianboondocks.com/2010/06/ssto-ntr-bad/

Good news on the materials front
http://up-ship.com/blog/?p=29498
http://nextbigfuture.com/2015/07/metal-foam-can-allow-lighter-radiation.html

That might not be enough for my favorite drive, the Nuclear Salt Water Rocket.
https://en.wikipedia.org/wiki/Nuclear_salt-water_rocket

Due to their ability to harness the power of what is essentially a continuous nuclear fission explosion, NSWRs would have both very high thrust and very high exhaust velocity, a rare combination of traits in the rocket world, meaning that the rocket would be able to accelerate quickly as well as be extremely efficient in terms of propellant usage.

One design would generate 13 meganewtons of thrust at 66 km/s exhaust velocity (compared to ~4.5 km/s exhaust velocity for the best chemical rockets of today). Another design would achieve much higher exhaust velocities (4,700 km/s) and use 2,700 tonnes of highly enriched uranium salts in water to propel a 300 tonne spacecraft up to 3.6% of the speed of light.

If we are to ever to reach the stars, we are going to have to go for the brute force approach--ever larger launch vehicles and spacecraft.

 

[Dryson]

The same as it would anywhere else.

Where's the proof of the rocket operating the same as everywhere else?

X Prize also has an article on its Facebook Page regarding the EM Drive.

https://www.facebook.com/xprize

 

[sojourner]

The same as it would anywhere else.

Where's the proof of the rocket operating the same as everywhere else?

Why wouldn't it?

 

[PurpleBuddha]

A question I have is, how would any drive or rocket engine operate in the hole in the center of the Universe where no matter of a known type can be detected? Not even Dark Matter can be detected.

The large void is not in the center of the universe. There is no center.

 

[Gingerbread Demon]

A question I have is, how would any drive or rocket engine operate in the hole in the center of the Universe where no matter of a known type can be detected? Not even Dark Matter can be detected.

The large void is not in the center of the universe. There is no center.

That's right. That's the endpoint of the simulation... Green lines everywhere and you fall off?

I know I saw the documentary on it called The 13th Floor...

 

[Dryson]

A question I have is, how would any drive or rocket engine operate in the hole in the center of the Universe where no matter of a known type can be detected? Not even Dark Matter can be detected.

The large void is not in the center of the universe. There is no center.

If there wasn't a center of our Universe where the Big Bang occurred then we wouldn't exist because based on our own solar system model we exist because we orbit a sun. Since Einstein has proven Relativity then the relativity of the notion that our Universe would also orbit around a central source. Otherwise relativity wouldn't exist.

If the center of our Universe didn't exist then there would not see the universe expanding in all directions out from a central source either.

 

[Dryson]

The same as it would anywhere else.

Where's the proof of the rocket operating the same as everywhere else?

Why wouldn't it?

If there isn't any normal matter such as stars or suns and the void is free of normal matter but unknown matter how would a rocket engine operate in an area where the normal physics applied to a rocket engine operating do not exist?

A rocket engine is a process of creating an acceleration factor to escape the pull of gravity. How can the rocket engine create the process of acceleration to escape gravity when none of the objects present in the Void that create gravity are present or exist?

 

[sojourner]

No. Just so much fail in both of those posts. Stop getting your science education from the daily fail.

 

[PurpleBuddha]

If the center of our Universe didn't exist then there would not see the universe expanding in all directions out from a central source either.

Space itself expands. This means that from any point in space one would observe everything else expanding away. Pick a point, any point. You would observe "the universe expanding in all directions out" from that point. Surely you have seen this mapped out on a grid before, right? Its a pretty common demonstration to help the general public, who may have no formal physics education, to understand why the universe has no center.

 

[Nebusj]

If there isn't any normal matter such as stars or suns and the void is free of normal matter but unknown matter how would a rocket engine operate in an area where the normal physics applied to a rocket engine operating do not exist?

A rocket engine is a process of creating an acceleration factor to escape the pull of gravity. How can the rocket engine create the process of acceleration to escape gravity when none of the objects present in the Void that create gravity are present or exist?

You know that if a rocket were in the middle of a void, the rocket would still exist, right? I'm not being snarky here; as far as I can tell from your question, you're supposing that the rocket would also not exist if it happened to be in the middle of a void. If that isn't what you mean, please try putting your question out again.

 

[Silvercrest]

If the center of our Universe didn't exist then there would not see the universe expanding in all directions out from a central source either.

... from any point in space one would observe everything else expanding away. You would observe "the universe expanding in all directions out" from that point.

Right. We don't see it expanding away from some general center with a hole in it. We see it expanding away from us.

Well, to be more specific:

Since Einstein has proven Relativity then the relativity of the notion that our Universe would also orbit around a central source. Otherwise relativity wouldn't exist.

Since relativity does exist, and since I can prove that everything I see in the sky is expanding away relative to me, there's only one possible conclusion. I am the center of the universe. Yay, Einstein!

Or, you might want to look up what "relativity" really means.

 

[Retu]

"Where is the center of the Universe?" "Everywhere and nowhere."

 

[Ithekro]

If I understand tis thought pattern, the suggestion is that a rocket wouldn't work I the void because the usual way a rocket is described is that is generates thrust against gravity to push the rocket around. If one only uses that type of model, than one would assume that without gravity, there would be nothing to push against for the thrust to work.

That is not how a rocket actually works. Nor does the void mean the laws of physics aren't working as normal. The laws of physics are working fine. That most of the matter formed into galaxies in such a way that left a giant opening with nothing there is not out of the question. There are lots of voids where there are no galaxies. There are nine such voids within 200 million light years of Earth.

 

[Crazy Eddie]

Where's the proof of the rocket operating the same as everywhere else?

Why wouldn't it?

If there isn't any normal matter such as stars or suns and the void is free of normal matter but unknown matter how would a rocket engine operate in an area where the normal physics applied to a rocket engine operating do not exist?

The lack of "known matter" in a region doesn't change the known laws of physics. A rocket still operates in a vacuum; the "hole" you're talking about is just a far emptier vacuum than usual.

FYI, 110 years ago the New York Times claimed that rockets wouldn't work in space for pretty much the same reasons you're using. This is not a dig against you, just a reminder that smarter men than you have made this mistake and they have been wrong every time.

 

[Silvercrest]

I was going to insert a "Crazy Eddie Drive" joke. But it's only funny if your username came from a certain source.