EM Drive

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

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ScottL
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Re: EM Drive

Postby ScottL » Mon Apr 25, 2016 11:04 pm

It could be noted that Tajmar has been on the "oh those darn artifacts fooled me again" end of the stick several times. I'll give him credit that he eventually does admit if/when he's wrong, but he's had a few gotcha moments. That being said, since Shawyer wants to remain secretive and I don't expect any DIYer to compete at a research lab level, I'll wait and see what comes of EagleWorks. I would think if we haven't seen a peer-reviewed journal entry by the end of the year, then we probably have our answer.

birchoff
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Re: EM Drive

Postby birchoff » Tue Apr 26, 2016 3:10 am


ScottL
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Re: EM Drive

Postby ScottL » Tue Apr 26, 2016 5:59 am


RERT
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Re: EM Drive

Postby RERT » Tue Apr 26, 2016 6:28 pm

Poster DaChuna on NSF recently discussed being offered a PhD studentship to work with Tajmar on "optimising em drive resonances" IIRC.

Tajmar seems to be in enough doubt to carry on working.

R.

Carl White
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Re: EM Drive

Postby Carl White » Wed Apr 27, 2016 6:20 am


paperburn1
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Re: EM Drive

Postby paperburn1 » Wed Apr 27, 2016 12:06 pm

Shiney
I am not a nuclear physicist, but play one on the internet.

ladajo
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Re: EM Drive

Postby ladajo » Wed Apr 27, 2016 12:20 pm

You can't say that they are not serious. Love to know what is up with Eagle Works. Maybe I will email Paul.
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)

Betruger
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Re: EM Drive

Postby Betruger » Wed Apr 27, 2016 1:45 pm


ScottL
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Re: EM Drive

Postby ScottL » Wed Apr 27, 2016 4:34 pm

I would love to see a well done experiment with proper data sets, error bars, just a full characterization. People keep trying to throw theories at a yet to be observed thrust. I say yet to be observed because nobody has spent the time to characterize their random and systematic errors or even provide a measurement with a +/- error that is bigger than the error itself. The closest we got was Yang's attempt, but she made up her own error measurement system which appears to have been reviewed and rejected by her peers at her university. I do like all the shiny though. If it doesn't work out, Cannae could definitely sell all that as props for a scifi show.

JoeP
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Re: EM Drive

Postby JoeP » Wed Apr 27, 2016 5:21 pm

I like the cubesat idea. Maybe some people at SpaceX could be convinced to haul a little one up to the ISS with payment as the rights to the IP on the off chance that it works. And NASA designs and pays for and builds the test cubesat.

hanelyp
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Re: EM Drive

Postby hanelyp » Wed Apr 27, 2016 6:41 pm

The daylight is uncomfortably bright for eyes so long in the dark.

ladajo
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Re: EM Drive

Postby ladajo » Wed Apr 27, 2016 7:34 pm

As I understand it is a left/right spin, thus all of it is on the balance. The pivot point is the lower round vice like mounting in the center. The instrument is the black sensor underneath the resonant cavity on the left. It does not look like they are using liquid contacts for connections, which is curious to me. Although, there may be some hidden isolation details in the RF drive unit on the right.
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)

hanelyp
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Re: EM Drive

Postby hanelyp » Thu Apr 28, 2016 3:16 am

If I were designing a torsion balance for such an experiment, I'm tempted to feed power as DC along the suspension wire. Signal for control and measurement of the apparatus is minuscule current by comparison, and the biggest concern I have for those is mechanical interference on wires. a broadband signal along the same cable suspending the balance and feeding DC is a tempting option here.
The daylight is uncomfortably bright for eyes so long in the dark.

Giorgio
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Re: EM Drive

Postby Giorgio » Thu Apr 28, 2016 11:33 am

A society of dogmas is a dead society.

ladajo
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Re: EM Drive

Postby ladajo » Thu Apr 28, 2016 12:29 pm

Good, thanks for catching that. That will help.
I still have some concerns about the instrumentation connects and heating/cooling effects on those. Ambient and RF leakage can produce some interesting effects.

Either way, as I said above, they certainly look serious.
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)


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