Here's something else to think about, Eagleworks' project is dead...for all intents and purposes. Dead in the fact that there is an information blackout that has been in effect for many months. Designing something to try and match a 2-3 year old design whose specifics have not been released is counterproductive IMHO.I can tell you that there were rumblings that the 2014 tests yielded results WITHOUT a dielectric. I cannot say any more than that as am trying to respect the overall blackout. That being an old 2014 test, seems OK to provide the info. So...long story short...no one has a magic design yet so feel free to experiment with the guidance you have here...you will get some who want you to do this or that...but the key word here is YOU.
Here's a question for people, apologies if it was asked/answered before.What sort of effect does having a less rounded frustum have on things?I've been toying around with a design for a re-configurable frustum. Sort of like a three dimensional iris shutter system. While I "should" be able to figure out how to make the blades rounded, unless I get super fancy with adjustable curves on the blades, they will still somewhat only be optimized for a particular shape.Additionally, is having the RF input on the side of the frustum necessary compared with one of the endplates?The goal of this particular mental exercise is to attempt to come up with a design of a frustum that can to some extent have most variables about its shape adjustable via computer control (possibly via stepper motors).Thanks-Mazon
If a Methanol laser can lase at a wavelength of 0.5mm, are there any lasers with an even longer wavelength?
emdrive will be on the bbc horizon episode per this articlehttp://www.radiotimes.com/episode/d2zck4/horizon--project-greenglow-the-quest-for-gravity-control
Quote from: rfmwguy on 03/17/2016 12:30 amQuote from: Monomorphic on 03/16/2016 10:37 pmQuote from: TheTraveller on 03/16/2016 10:23 pmThis is the only photographic evidence we have of how and where Rf was injected into the SPR Flight Thruster, which is the most modern non cryo design. That Rf coax injection by a coupler (sort of antenna) of some design.Can anyone tell me what this square thing is protruding near the RF coax inject? Is it some kind of mechanism for changing the shape of the antenna? My best guess is that it is a matching stub. Note the screw adjustment on the left of the box. No idea on the interior antenna design.It also could be a loop antenna for exciting a TE012 mode and the attachment on the side allows you to rotate the loop for max Q and minimum mode distortion in the cavity.
Quote from: Monomorphic on 03/16/2016 10:37 pmQuote from: TheTraveller on 03/16/2016 10:23 pmThis is the only photographic evidence we have of how and where Rf was injected into the SPR Flight Thruster, which is the most modern non cryo design. That Rf coax injection by a coupler (sort of antenna) of some design.Can anyone tell me what this square thing is protruding near the RF coax inject? Is it some kind of mechanism for changing the shape of the antenna? My best guess is that it is a matching stub. Note the screw adjustment on the left of the box. No idea on the interior antenna design.
Quote from: TheTraveller on 03/16/2016 10:23 pmThis is the only photographic evidence we have of how and where Rf was injected into the SPR Flight Thruster, which is the most modern non cryo design. That Rf coax injection by a coupler (sort of antenna) of some design.Can anyone tell me what this square thing is protruding near the RF coax inject? Is it some kind of mechanism for changing the shape of the antenna?
This is the only photographic evidence we have of how and where Rf was injected into the SPR Flight Thruster, which is the most modern non cryo design. That Rf coax injection by a coupler (sort of antenna) of some design.
Quote from: Rodal on 03/16/2016 10:46 pmTherefore I think you should wait until Monomorphic runs a comparison of the effect of random distortions of each end, and of the sidewalls on the Q, before making a decision on how to proceed.I'm working on doing just that. I hope to have something by this weekend. The higher number of triangles in these meshes (500+) greatly increases the compute time and I've been pretty busy this week. I'm also going to work with aero on comparing FEKO and MEEP runs. Hope to have results on that in the next day or so.
Therefore I think you should wait until Monomorphic runs a comparison of the effect of random distortions of each end, and of the sidewalls on the Q, before making a decision on how to proceed.
Quote from: rfmwguy on 03/16/2016 05:33 pmHere's something else to think about, Eagleworks' project is dead...for all intents and purposes. Dead in the fact that there is an information blackout that has been in effect for many months. Designing something to try and match a 2-3 year old design whose specifics have not been released is counterproductive IMHO.I can tell you that there were rumblings that the 2014 tests yielded results WITHOUT a dielectric. I cannot say any more than that as am trying to respect the overall blackout. That being an old 2014 test, seems OK to provide the info. So...long story short...no one has a magic design yet so feel free to experiment with the guidance you have here...you will get some who want you to do this or that...but the key word here is YOU.Dave:The Eagleworks Lab is NOT dead and we continue down the path set by our NASA management. Past that I can't say more other than to listen to Dr. Rodal on this topic, and please have patience about when our next EW paper is going to be published. Peer reviews are glacially slow...Best, Paul March
Quote from: Star-Drive on 03/17/2016 03:36 amQuote from: rfmwguy on 03/16/2016 05:33 pmHere's something else to think about, Eagleworks' project is dead...for all intents and purposes. Dead in the fact that there is an information blackout that has been in effect for many months. Designing something to try and match a 2-3 year old design whose specifics have not been released is counterproductive IMHO.I can tell you that there were rumblings that the 2014 tests yielded results WITHOUT a dielectric. I cannot say any more than that as am trying to respect the overall blackout. That being an old 2014 test, seems OK to provide the info. So...long story short...no one has a magic design yet so feel free to experiment with the guidance you have here...you will get some who want you to do this or that...but the key word here is YOU.Dave:The Eagleworks Lab is NOT dead and we continue down the path set by our NASA management. Past that I can't say more other than to listen to Dr. Rodal on this topic, and please have patience about when our next EW paper is going to be published. Peer reviews are glacially slow...Best, Paul MarchHi Paul,Good to learn you guys are still alive and giving it your best.As Shell, Dave & myself are building much higher quality 2nd gen frustums and there has been some discussion of side wall thickness, could you share a bit of info on the Alum frustum as attached?What are the side wall and end plate thickness?Was the frustum cast with the flanges, machined and polished or was it rolled, sidewall edge seam welded, flanges welded on, machined and then polished?Are the interior dimensions shareable?Any other breadcrumbs to share?Phil
NSF readers are encouraged to look at previous EM Drive threads (and to use Google's advanced search function) to find previous answers to some of the questions asked in the above post, for example :dimensions, including thickness of NASA's EM Drive:
Quote from: Rodal on 03/17/2016 11:23 amNSF readers are encouraged to look at previous EM Drive threads (and to use Google's advanced search function) to find previous answers to some of the questions asked in the above post, for example :dimensions, including thickness of NASA's EM Drive:The questions I asked were about the Aluminium Frustum EW built and have NOT been answered. What you provided was info on the copper frustum that Paul built. Please reread my questions to Paul.BTW I have a complete Google Drive archive of all of Paul, Dave, Shell, mine and your posts and attachments so it is easy to search.
Quote from: rfmwguy on 03/17/2016 12:59 amemdrive will be on the bbc horizon episode per this articlehttp://www.radiotimes.com/episode/d2zck4/horizon--project-greenglow-the-quest-for-gravity-control Who is he?The device looks very cool!!!I completed the microwave amplifier using NXP chip, I was measuring platform
so far I've only seen frequency shifts done with FEKO. Is there a possibility to also do time related animations?
I believe it is very important to compare the anomalous force resuts of these different frustums to make a valid comparison.
Quote from: Rodal on 03/17/2016 11:43 amI believe it is very important to compare the anomalous force resuts of these different frustums to make a valid comparison.As I have measured ~8mN with my 1st non dielectric build, dielectrics are of no interest to me. I believe they are a waste of time. I know of NO build that has shown above multiple SnowFlake level of force generation using dielectrics other than Roger's Experimental EmDrive, after which he abandoned using dielectrics.
I completed the microwave amplifier using NXP chip, I was measuring platform
Quote from: oyzw on 03/17/2016 02:32 amI completed the microwave amplifier using NXP chip, I was measuring platformPlease show us the amplifier. I have a NXP transistor i'm working on building an amp around. Would love some advice as i'm just getting started.
...why are you interested in the dimensions of the aluminum frustum that NASA found to have a much lower anomalous force?
...With respect, I really think you are flogging a dead horse, running down a dead end alley, chasing the dielectric.
I believe they are a waste of time...[snip] a dead horse, running down a dead end alley, chasing the dielectric.