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#3220
by
Star One
on 17 Apr, 2018 14:15
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with "the rest of the world", do you mean SPECIFICALLY China and Russia? What a grand generalization that was.
plus tons of doomsday scenario being painted about what other humans might do, when right now the US and China and probably Russia are on a race for General Intelligence AI, as if they could dominate a thinking being that, even if it is only as intelligent as it's creator, it processes information 2 million times faster. So each hour it has to think is like a thousand years of it's creator thinking. You can´t outsmart or unplug such a thing. It will convince you to not do so. (if you could contain it on a box, to start with, which you can't)
There you have your real danger not only to western civilization, but to all humanity.
The world is bigger and has more sources of bad ideas than a China flirting with Imperialism or Russia seeking to regain strength through nationalism. I'm far more worried about Western civilization's nihilism and open invitations to replace itself with anything else that comes around.
Can we get this thread back on track and leave the politics to the policy section before this thread has to be locked and pruned.
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#3221
by
SteveD
on 17 Apr, 2018 21:08
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Any updates from Tajmar at the conference? Last I heard he thought the EM Drive was an interaction with external magnetic fields.
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#3222
by
oyzw
on 18 Apr, 2018 03:35
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Any updates from Tajmar at the conference? Last I heard he thought the EM Drive was an interaction with external magnetic fields.
The interaction with external magnetic fields? That means electromagnetic waves penetrate the metal cavity.That goes against the existing physics theory, right?
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#3223
by
dustinthewind
on 18 Apr, 2018 05:08
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Any updates from Tajmar at the conference? Last I heard he thought the EM Drive was an interaction with external magnetic fields.
The interaction with external magnetic fields? That means electromagnetic waves penetrate the metal cavity.That goes against the existing physics theory, right?
No, EM waves shouldn't penetrate the cavity (not that I'm aware of). A static magnetic field may penetrate the cavity, or interact with external wires connected to the cavity. I have my doubts any AC current would induce a unidirectional force other than maybe a repulsive effect from a metal surface by induction of counter currents. I think it's likely they are referring to a DC current interaction with a magnetic field however.
Some experiments can be set up with a Helmholtz coil to neutralize the earths magnetic field.
Another option is a properly configured MU metal shielding to separate external magnetic fields from interacting with the experiment (external non rotating shielding) and an (internal) rotating MU metal shield to keep magnetic fields from the experiment from interacting with the (external) MU metal shielding.
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#3224
by
oyzw
on 18 Apr, 2018 06:31
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Any updates from Tajmar at the conference? Last I heard he thought the EM Drive was an interaction with external magnetic fields.
The interaction with external magnetic fields? That means electromagnetic waves penetrate the metal cavity.That goes against the existing physics theory, right?
No, EM waves shouldn't penetrate the cavity (not that I'm aware of). A static magnetic field may penetrate the cavity, or interact with external wires connected to the cavity. I have my doubts any AC current would induce a unidirectional force other than maybe a repulsive effect from a metal surface by induction of counter currents. I think it's likely they are referring to a DC current interaction with a magnetic field however.
Some experiments can be set up with a Helmholtz coil to neutralize the earths magnetic field.
Another option is a properly configured MU metal shielding to separate external magnetic fields from interacting with the experiment (external non rotating shielding) and an (internal) rotating MU metal shield to keep magnetic fields from the experiment from interacting with the (external) MU metal shielding.
Magnetic shielding is not complicated, and they can do it.Using different q-value cavities, the same coupling power, if corresponding to different thrust signals, means that the thrust comes from the cavity itself.
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#3225
by
Peter Lauwer
on 18 Apr, 2018 10:11
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Any updates from Tajmar at the conference? Last I heard he thought the EM Drive was an interaction with external magnetic fields.
The interaction with external magnetic fields? That means electromagnetic waves penetrate the metal cavity.That goes against the existing physics theory, right?
Don't think so. Interaction of currents in/from the battery or other supply and in the amplifier with external (electro)magnetic fields.
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#3226
by
RERT
on 18 Apr, 2018 12:41
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My recollection of his presentation is that Tajmar saw the same force signal with and without power reaching the cavity. Needs some fortitude to keep pedaling from there...
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#3227
by
SteveD
on 18 Apr, 2018 21:19
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My recollection of his presentation is that Tajmar saw the same force signal with and without power reaching the cavity. Needs some fortitude to keep pedaling from there...
Is this at the current conference or at the prior one? The last I heard the device had to be energized to pick up a signal.
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#3228
by
Monomorphic
on 19 Apr, 2018 01:09
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I have the latest version of the liquid metal contact system mounted and wired. I also replaced most of the bubble insulation on the pendulum with a higher quality foam insulation as it is harder and more stable when mounting components.
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#3229
by
Mulletron
on 19 Apr, 2018 01:19
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I have the latest version of the liquid metal contact system mounted and wired. I also replaced most of the bubble insulation on the pendulum with a higher quality foam insulation as it is harder and more stable when mounting components.
Man, you've put so much work into this, it's incredible your dedication. It would be so cool if we could see a video of what you have going on there. You've done so much Monomorphic. I admire you because you have worked so hard to make and build.
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#3230
by
RERT
on 19 Apr, 2018 09:45
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My recollection of his presentation is that Tajmar saw the same force signal with and without power reaching the cavity. Needs some fortitude to keep pedaling from there...
Is this at the current conference or at the prior one? The last I heard the device had to be energized to pick up a signal.
I'm referring to the presentation posted by Dr.Rodal currently at reply numbered 2978 a few pages back. If you have better news a link would be much appreciated.
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#3231
by
RERT
on 19 Apr, 2018 09:55
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I have the latest version of the liquid metal contact system mounted and wired. I also replaced most of the bubble insulation on the pendulum with a higher quality foam insulation as it is harder and more stable when mounting components.
Like Mulletron I'm in awe at what you've built - I'm the guy who needs the manual to use a screwdriver, you are so far beyond my capabilities it's outrageous.
However, by now I'm diagnosing some unknown psychopathology preventing you from actually making measurements! (I only say this because my main alternative 'MIB' theory would reflect badly on me...)
Please, pretty please, give us some measurements. Definitive to whatever accuracy your excellent rig allows! Just move to 10% of the time spent testing, and 90% spent improving the rig, from 100% spent improving the rig...
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#3232
by
Monomorphic
on 19 Apr, 2018 13:20
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Please, pretty please, give us some measurements. Definitive to whatever accuracy your excellent rig allows! Just move to 10% of the time spent testing, and 90% spent improving the rig, from 100% spent improving the rig...
The hope is that these newest upgrades will allow for a more seamless integration with LabView. Without a way to automate the experiment so that tests can be performed under exactly the same conditions, then the data will be harder to process for analysis. It has also allowed me to offload the computer, which generates quite a bit of heat. The battery was also a pain as it needed to be recharged between each test. Now there will be only three main components on the pendulum: signal generator/power detector, RF amplifier, and frustum.
I also had to physically touch the pendulum two or three times to begin tests by pressing a button to turn on the on-board computer, and adding/charging the battery. This would disturb the pendulum long enough that heat from the computer was building up and causing displacement noise problems. If the liquid metal contacts work out, then the only time I will need to touch the pendulum is when centering it and when tuning the frustum. But once the frustum is tuned, it tends to stay in tune unless it gets bumped, likewise with the centering.
So what's left to do before tests can resume? I need to finish the wiring for the liquid metal contacts by running the mains and USB cables. I would like to purchase a 30A USB relay board so I can automate main power on-off as well (my current relay board is only good to 10A). Then I need to finish building the phase change heat sink for the main amplifier. That is 80% finished and I have all the materials I need here to complete. Once all of that is finished I will begin working on the LabView scripting portion. It is highly probable that I will run a few manual tests during this time, so there may be limited data during that period.
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#3233
by
dustinthewind
on 19 Apr, 2018 13:33
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I'm considering a cylindrical cavity design that would induce a transverse magnetic mode moving current up and down. It could be considered mach effect or EM drive related. I wan't to make an antenna that uses a capacitor on the end of the cylinder to induce currents. The design is in the image below. Any recommended dielectrics that would be cheap to apply and have very high thermal resistance and voltage breakdown or would it be better to use magnetic coupling?
The capacitance antennas should be able to induce the 1f and 2f frequency, possibly more by superimposing frequencies on a single antenna. It could all be done with just 1 antenna, which may be the better choice. Wondering if it's possible the frustum design does this naturally. This cylindrical one would be a forced induction at 1f and 2f frequencies, possibly more at 3f 4f ect. To increase the effect we might consider moving to current induction in large bundles of fibers at even higher frequency, possibly increasing the volume of current being manipulated or lots of cavities at higher frequencies.
https://forum.nasaspaceflight.com/index.php?topic=42978.msg1806976#msg1806976
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#3234
by
PotomacNeuron
on 19 Apr, 2018 13:46
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I have the latest version of the liquid metal contact system mounted and wired. I also replaced most of the bubble insulation on the pendulum with a higher quality foam insulation as it is harder and more stable when mounting components.
Your finding that insulation largely eliminates mechanical noise is significant for torsion balance experiments.
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#3235
by
PotomacNeuron
on 19 Apr, 2018 13:54
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Please, pretty please, give us some measurements. Definitive to whatever accuracy your excellent rig allows! Just move to 10% of the time spent testing, and 90% spent improving the rig, from 100% spent improving the rig...
The hope is that these newest upgrades will allow for a more seamless integration with LabView. Without a way to automate the experiment so that tests can be performed under exactly the same conditions, then the data will be harder to process for analysis. It has also allowed me to offload the computer, which generates quite a bit of heat. The battery was also a pain as it needed to be recharged between each test. Now there will be only three main components on the pendulum: signal generator/power detector, RF amplifier, and frustum.
I also had to physically touch the pendulum two or three times to begin tests by pressing a button to turn on the on-board computer, and adding/charging the battery. This would disturb the pendulum long enough that heat from the computer was building up and causing displacement noise problems. If the liquid metal contacts work out, then the only time I will need to touch the pendulum is when centering it and when tuning the frustum. But once the frustum is tuned, it tends to stay in tune unless it gets bumped, likewise with the centering.
So what's left to do before tests can resume? I need to finish the wiring for the liquid metal contacts by running the mains and USB cables. I would like to purchase a 30A USB relay board so I can automate main power on-off as well (my current relay board is only good to 10A). Then I need to finish building the phase change heat sink for the main amplifier. That is 80% finished and I have all the materials I need here to complete. Once all of that is finished I will begin working on the LabView scripting portion. It is highly probably that I will run a few manual tests during this time, so there may be limited data during that period.
Please make two switches, one for the amplifier and one for the signal generator. Making one switch for all prevented Star Drive's 2014 NASA EW experiment from running necessary null tests to assess the DC current interacting with magnetic field problem ( as pointed out by my paper, and now suspected by Tajmar for his experiments) .
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#3236
by
kenny008
on 19 Apr, 2018 16:52
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Please, pretty please, give us some measurements. Definitive to whatever accuracy your excellent rig allows! Just move to 10% of the time spent testing, and 90% spent improving the rig, from 100% spent improving the rig...
...
Now there will be only three main components on the pendulum: signal generator/power detector, RF amplifier, and frustum.
...
So what's left to do before tests can resume? I need to finish the wiring for the liquid metal contacts by running the mains and USB cables. I would like to purchase a 30A USB relay board so I can automate main power on-off as well (my current relay board is only good to 10A). Then I need to finish building the phase change heat sink for the main amplifier. That is 80% finished and I have all the materials I need here to complete. Once all of that is finished I will begin working on the LabView scripting portion. It is highly probable that I will run a few manual tests during this time, so there may be limited data during that period.
Mainly a lurker, but excited to see your progress. Not an expert by any means, but I had a question about the PCM heat sink.
As the material changes phase, it has the ability to move around quite a bit (like any other liquid). As I understand it, this is to be mounted on the beam. Is there any concern that, as the PCM liquifies and possibly shifts around, this can change center of mass of the beam? This video
shows quite a bit of flow, and while most applications don’t care, will your exquisitely balanced setup notice this?
Sorry if I’m misunderstanding the build if the PCM is off the beam. This would then not be an issue.
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#3237
by
Monomorphic
on 19 Apr, 2018 18:30
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Mainly a lurker, but excited to see your progress. Not an expert by any means, but I had a question about the PCM heat sink.
As the material changes phase, it has the ability to move around quite a bit (like any other liquid). As I understand it, this is to be mounted on the beam. Is there any concern that, as the PCM liquifies and possibly shifts around, this can change center of mass of the beam?
shows quite a bit of flow, and while most applications don’t care, will your exquisitely balanced setup notice this?
Sorry if I’m misunderstanding the build if the PCM is off the beam. This would then not be an issue.
Hello, welcome and thanks for the question. Unless I run the amplifier continuously for many minutes at a time, I do not expect the wax to liquefy but to be a store of heat. So far, I try and keep tests under one minute. Of course this means there will need to be some cool down time between tests.
Also, the video you show is a complicated structure with channels and it looks like it may not be level compared to when it solidified. I will have 4 simple identical rectangular reservoirs for the wax and if the wax melts, it will do so in the exact same position in which it solidified. There will be some expansion and contraction to be considered, but I'm doubtful there will be significant flow.
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#3238
by
oyzw
on 20 Apr, 2018 01:00
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I think comparative law should be adopted to eliminate interference factors.For example cylindrical cavity load and different cavity value cavity are used to compare thrust response parameters under same frequency and power condition because interference factor outside cavity thrust is fixed.
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#3239
by
PotomacNeuron
on 20 Apr, 2018 04:32
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I think comparative law should be adopted to eliminate interference factors.For example cylindrical cavity load and different cavity value cavity are used to compare thrust response parameters under same frequency and power condition because interference factor outside cavity thrust is fixed.
Translation: "comparative law" means "the method of comparing against proper null tests".
Also, the video you show is a complicated structure with channels and it looks like it may not be level compared to when it solidified. I will have 4 simple identical rectangular reservoirs for the wax and if the wax melts, it will do so in the exact same position in which it solidified. There will be some expansion and contraction to be considered, but I'm doubtful there will be significant flow.