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re: NASA's "impossible" EM Drive actually works though in violation of physics

Posted on 11/10/16 at 10:47 am to
Posted by shel311
McKinney, Texas
Member since Aug 2004
112944 posts
Posted on 11/10/16 at 10:47 am to
quote:

A spacecraft that can provide thrust using only solar panels would not need to carry its own fuel, and so can travel much farther and faster.

Gotcha.

It mentioned 70 days to Mars, how long would that hypothetical trip take currently?
Posted by Fun Bunch
New Orleans
Member since May 2008
131653 posts
Posted on 11/10/16 at 10:55 am to
quote:

can you dumb this shite down for me and explain why and the uses of it?



It is only beneficial once you're in space. But once you're up there...

No Fuel or propellant required, and a constant (in theory) source of propulsion. That could pick up speed gradually without change.

Lighter, cheaper, faster spacecraft.

Once in orbit, could get the moon extremely quickly (hours at most), and could get to Mars within 70 days...or even quicker. And all the way out to Pluto within 2 years.

The Solar System and larger Universe begins to open up completely.

Not to mention the implications for practical applications.
Posted by Fun Bunch
New Orleans
Member since May 2008
131653 posts
Posted on 11/10/16 at 10:56 am to
quote:

how long would that hypothetical trip take currently?



About 6 months at the shortest. The problem is by the time they get there they have to wait for the Planets to realign to get back in 6 months, so they have to stay on planet for like a year or so.
This post was edited on 11/10/16 at 10:58 am
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
72706 posts
Posted on 11/10/16 at 11:03 am to
At the speeds required to get there in 70 days it'd have to hit the planet to stop.

It all comes back to power. How do we generate the required power from a sufficiently compact and lasting system?
Posted by Korkstand
Member since Nov 2003
29134 posts
Posted on 11/10/16 at 11:10 am to
quote:

At the speeds required to get there in 70 days it'd have to hit the planet to stop.
What? It never has to stop if it catches orbit.


edit: Also, 70 days to Mars isn't all that fast. Voyager 1 is moving fast enough to do that.
This post was edited on 11/10/16 at 11:29 am
Posted by Hu_Flung_Pu
Central, LA
Member since Jan 2013
22546 posts
Posted on 11/10/16 at 11:11 am to
Couldn't max speed be achieved midway and the rest of the way be used to slow it down?
Posted by Fun Bunch
New Orleans
Member since May 2008
131653 posts
Posted on 11/10/16 at 11:13 am to
quote:

At the speeds required to get there in 70 days it'd have to hit the planet to stop.


Nah.
Posted by John McClane
Member since Apr 2010
37182 posts
Posted on 11/10/16 at 11:15 am to
Science is badass
Posted by Bootyrich
Mandeville
Member since Jan 2015
1189 posts
Posted on 11/10/16 at 11:21 am to
I'll violate your laws of physics
Posted by 50_Tiger
Arlington TX
Member since Jan 2016
43496 posts
Posted on 11/10/16 at 11:29 am to
Grabbin physics by the pussy one day at a time!
Posted by TigerinATL
Member since Feb 2005
62446 posts
Posted on 11/10/16 at 11:34 am to
quote:

What? It never has to stop if it catches orbit.


Or maybe it's just running constantly like a train on a track between Earth and Mars. You have space stations and shuttles using traditional propulsion to load and unload people and things from the EM Drive powered vehicle. A train might even be the wrong metaphor, maybe shuttles and such could attach to it in flight, so the EM Drive vehicle is more like a conveyor belt between Earth and Mars.
Posted by mizzoukills
Member since Aug 2011
40686 posts
Posted on 11/10/16 at 11:39 am to
Killz

quote:

Imagine you're sitting in your car and push against your steering wheel. Will that motion cause your car to move forward?


TeddyPadillac

quote:

you are so retarded. it's not violating Newton's third law. They just haven't figured out yet where the that energy is going.



Am I really? Because the metaphor I posted is exactly the metaphor the scientists who are testing this machine used, and the same scientists admit that the machine seems to break Newton's 3rd Law.

So...how am I retarded again?

Also...are you more intelligent than the scientists who designed and are testing this machine?
Posted by sneakytiger
Member since Oct 2007
2506 posts
Posted on 11/10/16 at 11:39 am to
quote:

The thrust-to-power ratio observed is 1.2 ± 0.1 Newtons per Megawatt, where 1.2 Newtons is the equivalent of the weight of an iPhone 6, while a Megawatt is enough energy to power everything in your entire house… and 649 others, all at once. Which is to say, it’s an incredibly large amount of power required for an incredibly tiny amount of thrust.


Exactly. So how does this not require fuel?
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
72706 posts
Posted on 11/10/16 at 11:41 am to
The news is not that it doesn't require fuel. The news is that they are (per the article) applying a force that has no reaction force, violating Newtonian physics. The fact that it takes huge amounts of power is irrelevant in the context of the article.
Posted by Fun Bunch
New Orleans
Member since May 2008
131653 posts
Posted on 11/10/16 at 11:41 am to
quote:

So how does this not require fuel?


It does not require propellant (ie traditional fuel).
Posted by SEClint
New Orleans, LA/Portland, OR
Member since Nov 2006
49487 posts
Posted on 11/10/16 at 11:48 am to
Wow look at the upvotes..how does it feel?
Posted by mizzoukills
Member since Aug 2011
40686 posts
Posted on 11/10/16 at 11:50 am to
I hate upvotes, fwiw. They violate the 3rd Killzonian Law of Upvote/Downvote Ratio...









This post was edited on 11/10/16 at 12:00 pm
Posted by SEClint
New Orleans, LA/Portland, OR
Member since Nov 2006
49487 posts
Posted on 11/10/16 at 11:52 am to
quote:

I hate upvotes, fwiw


A lot of people hate what they don't understand.
Posted by TigerBuddha
Baton Rouge
Member since Oct 2016
139 posts
Posted on 11/10/16 at 1:06 pm to
isn't it pushing anti-gravity out the way??

totally ignorant question

fixed it
This post was edited on 11/10/16 at 8:54 pm
Posted by mizzoukills
Member since Aug 2011
40686 posts
Posted on 11/10/16 at 1:07 pm to
quote:

anit gravity



huh?
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