506 réponses à ce sujet

[bEVEsthda]

 

That's not an UFO, and it's not a solar flare, though it might be slightly related to solar flares, strictly as physics goes.

 

It's a life-form, and yes it's feeding. 

[Fast Jimmy]

Far more ambitious applications for the EM Drive were presented by Dr. White and include crewed missions to Mars as well as to the outer planets.
 
Specifically, these two proposed missions (to Mars and the outer planets) would use a 2 MegaWatt Nuclear Electric Propulsion spacecraft equipped with an EM Drive with a thrust/powerInput of 0.4 Newton/kW.
 
With this design, a mission to Mars would result in a 70-day transit from Earth to the red planet, a 90-day stay at Mars, and then another 70-day return transit to Earth.

 

That's the best thing about the EM drive! 

 

Putting warp-speed possibilities aside, it still gives us thrust with no fuel, which means return trips are astronomically (pun intended) easier without the need for a rocket fuselage to carry the heaviest part of a ship - its liquid fuel.

 

The speed is almost secondary to the amazing applications that has for the ability to land on the surface of a planetary object, muck around all we want, and then be able to hop on the same ship and leave the atmosphere without the need for a rocket takeoff. It takes the rocket science out of space travel... literally.

[The Devlish Redhead]

If you want to become depressed, read the comments on YouTube.

 

I did .... I want to leave this planet

[bEVEsthda]

That's the best thing about the EM drive! 

 

Putting warp-speed possibilities aside, it still gives us thrust with no fuel, which means return trips are astronomically (pun intended) easier without the need for a rocket fuselage to carry the heaviest part of a ship - its liquid fuel.

 

The speed is almost secondary to the amazing applications that has for the ability to land on the surface of a planetary object, muck around all we want, and then be able to hop on the same ship and leave the atmosphere without the need for a rocket takeoff. It takes the rocket science out of space travel... literally.

 

Not thrust without fuel. Thrust without reaction mass, possibly, but there's bound to be plenty of limitations on where it actually works.

But yea, bring a nuclear reactor, or giant solar panel.

[Fast Jimmy]

Oh, right, what are the G-forces involved?

 

Would drones be able to accelerate faster? I'm more thinking speeds that couldn't be feasible by people could be used for drones, it's also an even lighter load.

 

I am not well versed in the science to speak to it intelligently, but the results from the NASA scientists seem to indicate that the field in question would not generate G force on a theoretical vessel, since it is actually the space-time itself moving around the object, but the object and the immediate space around it would be stationary in normal space-time.

 

Whether or not that holds up is unsure (like so many things right now), but it seems to be a great indicator of an easy transition to practical applications.

[Fast Jimmy]

Not thrust without fuel. Thrust without reaction mass, possibly, but there's bound to be plenty of limitations on where it actually works.

But yea, bring a nuclear reactor, or giant solar panel.

 

Well, energy! = fuel

 

Yes, it would require energy to power the machine, but energy is something the ship needs regardless. It solves the issue of thrust in space without rocket fuel, which resolves MANY issues with space travel.

 

Not to mention the mundane applications here on Earth. Air travel could become much more inexpensive, much more quick. Mass transit rail systems can stretch across entire continents at a fraction of their current energy cost and at much greater speeds... the world will become even smaller with this technology, not to mention it will make the solar system (and beyond) within reach.

 

And, again, that doesn't even take into consideration FTL implications if they are properly vetted. 

[Fast Jimmy]

@no one special,

 

I CALL BS.

 

You have the right to call BS... but no one is there to pick up the phone. BS has packed up his bags and left for the moon.

[Garryydde]

So, is Manifest Destiny 2.0 going to become a thing? Can we go on a quest to conquer space and all the ayy lmao's that get in our way?

[bEVEsthda]

Well, energy! = fuel

 

"Fuel" is something you use for stored energy. Hence "fuel" for nuclear reactors is Uranium, for instance.

In rocket science we say "reaction mass", if we do not extract energy from the reaction mass. Normally, in chemical rockets, we do, so = "fuel".

[bEVEsthda]

 

Not to mention the mundane applications here on Earth. Air travel could become much more inexpensive, much more quick. Mass transit rail systems can stretch across entire continents at a fraction of their current energy cost and at much greater speeds... 

 

I don't see the logic behind any of that? All those systems already use effective propulsion systems, which do not use dispensed reaction mass. Why would the energy cost drop?

[Alan Rickman]

So this could end up being one of the biggest discoveries in human history, right? Like, discovering fire or inventing the wheel big?

[The Devlish Redhead]

How is it we can do this but we haven't cured cancer?

[The Devlish Redhead]

Also Shawyer claims that his engine could do this if he were to use supercapacitors to build the next generation of his engine. Now a propellantless engine that work in a atmosphere and can match the capabilities of a conventional jets would be far more valuable.

It also interesting that the Americans are moving away from their home grown version of the engine, the Cannae drive and moving towards Sawyer and the Chinese designs for the EM drive.

[Fast Jimmy]

I don't see the logic behind any of that? All those systems already use effective propulsion systems, which do not use dispensed reaction mass. Why would the energy cost drop?

Because I'm making wild assumptions about the ratio of kWh input required to generate force once this system is better understood (let alone optimized). When the drive was first put forth in 2010 by Chinese scientists, they were able to generate 10mN per 2.5 kWh. Hardly enough to propel much of anything in Earth's gravity.

Yet a source of thrust based completely off microwaves (and hence electrify, not fossil fuels, like combustion engines) that is able to generate even comparable amounts of power would be an incredible breakthrough for the energy industry.

[TurianRebel212]

How is it we can do this but we haven't cured cancer?

 

They have a cure already, and have for decades. They just don't want to release it to the general public because cancer is a very profitable disease for the Health Care Industry. 

[Fast Jimmy]

How is it we can do this but we haven't cured cancer?

Because cancer is a broad categorization of dozens of different genetic factors that go awry that cause unregulated cell reproduction (and, hence, tumors). The result, which we call cancer, has a wide variety of sources and causes that vary depending on the mutation in play (such as a P51 gene defect) as well as the cell type involved.

We won't find a cure for "cancer." We'll find numerous treatments that will eventually plug the holes that cause abnormally rapid cell replication, but it will be in steps, not a sudden switch that is thrown.

[Uccio]

How is it we can do this but we haven't cured cancer?

 

Money and dedication, and blind luck.

[Fast Jimmy]

Money and dedication, and blind luck.

I think we are underestimating this factor. This wasn't a multi-billion dollar research project that finally culminated in success. This was the flukiest of flukes. The entire project has been looked at with insane amounts of skepticism since Chinese scientist Yan Juan put forth the design in 2010.

If SJW were halfway intelligent, they would be hopping over the fact that a woman (Dr. Juan) was the one who broke the ground on this history-changing discovery. Instead, they'll worship Anita Sarkesian and ****** it to Hillary 2016 posters. <sigh>

[L. Han]

Interest plays a large factor too. Space gives up wonder and joy, where as cancer is just sad and depressing. Same goes with underwater exploration. We know more about space than we do about the ocean.

[The Devlish Redhead]

They have a cure already, and have for decades. They just don't want to release it to the general public because cancer is a very profitable disease for the Health Care Industry. 

 

That sounds like conspiracy talk?

[Jstatham1227]

while were at it, broad question. Do you believe in aliens, and have we established contact with them already?

[Vortex13]

Interest plays a large factor too. Space gives up wonder and joy, where as cancer is just sad and depressing. Same goes with underwater exploration. We know more about space than we do about the ocean.

 

 

 

Which is exactly what Great Cthulhu wants. 

 

Spoiler

[In Exile]

Because cancer is a broad categorization of dozens of different genetic factors that go awry that cause unregulated cell reproduction (and, hence, tumors). The result, which we call cancer, has a wide variety of sources and causes that vary depending on the mutation in play (such as a P51 gene defect) as well as the cell type involved.

We won't find a cure for "cancer." We'll find numerous treatments that will eventually plug the holes that cause abnormally rapid cell replication, but it will be in steps, not a sudden switch that is thrown.

 

Talking about a cure for cancer is a bit like talking about a cure for "sickness", though at a bit more of a specific level. Maybe cure for "cold" is a somewhat better analogy, but even then colds aren't necessarily as dissimilar in their (generally) viral cause. 

[Killdren88]

Actually, given that the universe is practically infinite the chance of that is almost 100%. Finding them might be problematic...but I'm sure there will be a lot of effort devoted to it once it becomes possible.

 

What instead of finding resource rich planets our top priority will be to look for sexy aliens?

[spinachdiaper]

It better be true because I need interstellar and or intergalactic travel to raise my odds for getting laid from .00000000000000000000000000000000000001% to .0000000000000000000000000000000000001%.