Questions tagged [emdrive]

The EMDrive is a type of electromagnetic thruster that is being researched. Unlike conventional electric thrusters, it does not use any form of reaction mass.

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“Magic Space Unicorns” disproven? Any technical write-ups of the explanation of Em-Drive results presented at Space Propulsion 2018?

@Antzi's answer links to the recent Ars Technica article NASA’s EM-drive is a magnetic WTF-thruster; Test reveals that the magic space unicorns pushing the EM-drive are magnetic fields.. According to ...
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What is the current status of EmDrive engine?

This engine was making news few years ago, but I have not heard much about it lately. Were there any updates regarding its tests, further development or anything?
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Is the 'impossible' EMdrive going to space?

The 'impossible' EM Drive is about to be tested in space Time to get to the bottom of this crazy thing. http://www.sciencealert.com/the-impossible-em-drive-is-about-to-be-tested-in-space Back in ...
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EmDrive compared to flashlight in space

From my (basic) understanding the most impressive thing about the EmDrive is it violates Newton's third law. No propellant is needed, nothing is jettisoned away, yet it, allegedly, accelerates in a ...
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The “Em Drive” paper is out - need some help understanding it

Scott Manley tells us (see Engadget also) that the reaction-less drive peer reviewed paper is out, and nicely explains the basics. If it works, it would violate the long-held belief that linear ...
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Inertialess Drive?

I was reading this article about an "EmDrive" recently. The article suggests that we've just been looking at the problem the wrong way all along, which sounds either like genius or lunacy. What ...
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Why don't we put an EmDrive in space?

Once again the impossible drive is in the forefront of public news. But thus far, I am still unimpressed. NASA seems to have thrown a lot of resources, to test the viability of the EmDrive. But I am ...
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EM drive requirements

There has now been a third positive study of the EM drive, and while I'm still skeptical, I'm starting to wonder if this is really possible. As such, I'm wondering what would be required to make this ...
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Hypothesized parameters of reactionless drives

If we assume that the claims for the EmDrive, Woodward effect and/or quantum vacuum plasma thruster are born out (notice I did NOT mention the Dean Drive), what would be the upper limit of potential ...
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Why is the “impossible” space drive impossible?

So apparently NASA just built an impossible propulsion device: Sawyer's engine is extremely light and simple. It provides a thrust by "bouncing microwaves around in a closed container." The ...
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What are the consequences of NASA validating this “impossible” space drive?

A British inventor invented an engine that can provide thrust in outer space without a propellant. This engine has been tested by a Chinese team, and more recently by NASA: The engine itself is The ...