EM Drive

Point out news stories, on the net or in mainstream media, related to polywell fusion.

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Carl White
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Re: EM Drive

Postby Carl White » Tue Aug 23, 2016 5:21 pm


ScottL
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Re: EM Drive

Postby ScottL » Tue Aug 23, 2016 5:50 pm

Their claims are vague at best. They have no published work that has gone through peer-review, nor any public demonstrations at this point. We know so little about their setup and results. That being said, the best recorded results thus far were from the Chinese professor (Yang) who later moved the power supply onto the test rig instead of having it fed via wire. This modification ended in a null result and Yang retracting her previous claim of thrust, so.... I'd take any claims that have not been peer-reviewed or published with a grain of salt.

Diogenes
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Re: EM Drive

Postby Diogenes » Tue Aug 23, 2016 9:14 pm

‘What all the wise men promised has not happened, and what all the damned fools said would happen has come to pass.’
— Lord Melbourne —

kunkmiester
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Re: EM Drive

Postby kunkmiester » Tue Aug 23, 2016 11:10 pm

I would still like a statistical analysis of current satellites. If the effect was indeed observed in station keeping records, it will show up across most satellites right? So you can independently verify his findings.
Evil is evil, no matter how small

RERT
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Re: EM Drive

Postby RERT » Wed Aug 24, 2016 10:57 am

Sadly, a lightbulb design that doesn't work won't prove very much on the concept of the electric lightbulb, but is disappointing.

Has EMdrive been tested in space?

If you want to go all-in speculation/conspiracy, check out the Operational History of the X37B OTV in Wiki. The thing was designed to spend 270 days in space, and has clocked up a mission of 675 days. Some missions were to test 'new space technologies' and were declared a 'spectacular success'. Interestingly they seem to later be quite candid about testing a Hall effect thruster, so presumably that isn't the new space technology. The dates line up fairly well with the time when Shawyer implies that the EMDrive program went 'black' (I can't remember his exact words).

ladajo
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Re: EM Drive

Postby ladajo » Wed Aug 24, 2016 12:52 pm

Well, the 37B would be a really good platform to test that on. We shall see. IMHO I think they are testing sensors, comm gear, and maybe energy storage methods. General space infrastructure stuff. As I put my Space Hat on, I comment seriously that space is not easy. Not nearly as easy as the Average Joe thinks. And when something is not easy, the real world tends to stick to the basics to gain functionality. However, only those in the program(s) really know. And in compartment world, they probably don't know what each other are doing either. :)
The development of atomic power, though it could confer unimaginable blessings on mankind, is something that is dreaded by the owners of coal mines and oil wells. (Hazlitt)
What I want to do is to look up C. . . . I call him the Forgotten Man. (Sumner)

Diogenes
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Re: EM Drive

Postby Diogenes » Thu Aug 25, 2016 5:13 pm

‘What all the wise men promised has not happened, and what all the damned fools said would happen has come to pass.’
— Lord Melbourne —

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Re: EM Drive

Postby paperburn1 » Thu Aug 25, 2016 7:04 pm

As I see it the only way for this to work is no special frame of reference. In this case, the only way to sort of preserve conservation of energy is to limit drive efficiency to that of a photon drive. This is not a very useful drive, though, since it has the same (low) performance as a photon drive.
I am not a nuclear physicist, but play one on the internet.

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Re: EM Drive

Postby kunkmiester » Thu Aug 25, 2016 10:39 pm

Evil is evil, no matter how small

Diogenes
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Re: EM Drive

Postby Diogenes » Fri Aug 26, 2016 6:34 pm

‘What all the wise men promised has not happened, and what all the damned fools said would happen has come to pass.’
— Lord Melbourne —

ladajo
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Re: EM Drive

Postby ladajo » Sat Aug 27, 2016 6:25 pm

In any event, it seems that Eagleworks is coming out of the dark(ish), and have a paper accepted for publication:

The development of atomic power, though it could confer unimaginable blessings on mankind, is something that is dreaded by the owners of coal mines and oil wells. (Hazlitt)

What I want to do is to look up C. . . . I call him the Forgotten Man. (Sumner)

williatw
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Re: EM Drive

Postby williatw » Sun Aug 28, 2016 12:35 am

Last edited by williatw on Sun Aug 28, 2016 12:08 pm, edited 1 time in total.

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Re: EM Drive

Postby ladajo » Sun Aug 28, 2016 3:58 am

Chasing the thread I saw the the results are on the order of mN per kw.

We shall see. Even though the conversations I have had with Paul March have always indicated an integrity on his part, I will look at it as I do all claims, it must stand on it's own merit.
The development of atomic power, though it could confer unimaginable blessings on mankind, is something that is dreaded by the owners of coal mines and oil wells. (Hazlitt)

What I want to do is to look up C. . . . I call him the Forgotten Man. (Sumner)

williatw
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Re: EM Drive

Postby williatw » Wed Aug 31, 2016 1:21 am


JoeP
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Re: EM Drive

Postby JoeP » Wed Aug 31, 2016 12:41 pm

I seriously doubt this is a real effect. It contradicts established theory.

I still think this is great news though. The space-enthusiast / sci-fi geek kid in me is excited about the cubesat experiment. If it somehow turns out to be a useful propellentless thruster that beats the photon rocket by an order of magnitude or more, then the whole solar system is open to us. Perhaps even further.

Looking forward to this launch and POC when it happens.


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