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#41
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Emdrive might change the law of inertia (for the Earth too!)
David Spain wrote:
On 11/24/2016 12:43 PM, Rob wrote: Non Newtonian Propulsion wrote: Do you know if it exist the project to test emdrive in freespace near the earth? http://www.popularmechanics.com/scie...-reactionless/ Of course such a test is completely meaningless, but still... I would admit the (small) possibility of using EmDrive for satellite station keeping in orbits that are within the influence of a planet with a significant (Geo/Jovi/etc)centric* magnetic field There is no need to prove that an electric current can result in a force when applied within a magnetic field. And when the EmDrive is demonstrated within the magnetic field of the earth, it has to be proven that it is not this effect. |
#42
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Emdrive might change the law of inertia (for the Earth too!)
"Jeff Findley" wrote in message
... I'm still betting this thing is just a lame excuse for a photon emitter. All those microwaves bouncing around in that metal chamber has to produce heat that goes somewhere. If the heat is radiated away in a non-uniform way, it would produce a very small net thrust due to the emission of photons in the infrared range (and possibly other ranges). That's my guess. I keep seeing in other places, "Will the EM drive prove Physics wrong?" or variations on that. I'll put my money on physics not changing. I'd like to see them take the same amount of energy put into this thing and instead stick it into the most efficient light emitters we've got and focus all the light in one direction. Then compare the results. Jeff -- Greg D. Moore http://greenmountainsoftware.wordpress.com/ CEO QuiCR: Quick, Crowdsourced Responses. http://www.quicr.net |
#43
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Emdrive might change the law of inertia (for the Earth too!)
On 11/26/2016 10:11 PM, Greg (Strider) Moore wrote:
"Jeff Findley" wrote in message ... I'm still betting this thing is just a lame excuse for a photon emitter. All those microwaves bouncing around in that metal chamber has to produce heat that goes somewhere. If the heat is radiated away in a non-uniform way, it would produce a very small net thrust due to the emission of photons in the infrared range (and possibly other ranges). That's my guess. I keep seeing in other places, "Will the EM drive prove Physics wrong?" or variations on that. Me either. But the forces claimed are too high for photon emission. Either directly as a photon rocket or indirectly via asymmetric photon emission (ie infra-red emissions due to heating). Also the force curves don't follow the slowly decreasing saw tooth's you'd expect to see due to slow decay cooling. They are abrupt square waves that closely track the applied power. I still believe it is interacting with an encompassing magnetic field. An experiment by the DIY'er "monomorphic' over at NasaSpaceFlight.com has been able to alter force direction by changing an encompassing magnetic field, if I recall reading a thread over there correctly. I'll put my money on physics not changing. Greg, I'd agree. That's a pretty safe bet... I'd like to see them take the same amount of energy put into this thing and instead stick it into the most efficient light emitters we've got and focus all the light in one direction. Then compare the results. Jeff You'd get a photon rocket. From what I recall that force is an order of magnitude or so smaller than what is being measured for EM Drive. Hence all the excitement. Dave |
#44
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Emdrive might change the law of inertia (for the Earth too!)
In article , says...
On 11/26/2016 10:11 PM, Greg (Strider) Moore wrote: "Jeff Findley" wrote in message ... I'm still betting this thing is just a lame excuse for a photon emitter. All those microwaves bouncing around in that metal chamber has to produce heat that goes somewhere. If the heat is radiated away in a non-uniform way, it would produce a very small net thrust due to the emission of photons in the infrared range (and possibly other ranges). That's my guess. I keep seeing in other places, "Will the EM drive prove Physics wrong?" or variations on that. Me either. But the forces claimed are too high for photon emission. Either directly as a photon rocket or indirectly via asymmetric photon emission (ie infra-red emissions due to heating). Also the force curves don't follow the slowly decreasing saw tooth's you'd expect to see due to slow decay cooling. They are abrupt square waves that closely track the applied power. Good to know. I still believe it is interacting with an encompassing magnetic field. An experiment by the DIY'er "monomorphic' over at NasaSpaceFlight.com has been able to alter force direction by changing an encompassing magnetic field, if I recall reading a thread over there correctly. Interesting. I'll put my money on physics not changing. Greg, I'd agree. That's a pretty safe bet... Agreed. I'd like to see them take the same amount of energy put into this thing and instead stick it into the most efficient light emitters we've got and focus all the light in one direction. Then compare the results. Jeff You'd get a photon rocket. From what I recall that force is an order of magnitude or so smaller than what is being measured for EM Drive. Hence all the excitement. Good to know. Hopefully someone will find the explanation. Whatever it is, it still might be useful for spacecraft operating inside earth's magnetic field. Jeff -- All opinions posted by me on Usenet News are mine, and mine alone. These posts do not reflect the opinions of my family, friends, employer, or any organization that I am a member of. |
#45
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Emdrive might change the law of inertia (for the Earth too!)
A non Newtonian drive is science fiction. A positronium power source is not.
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#46
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Emdrive might change the law of inertia (for the Earth too!)
Cannae will try to prove propellentless propulsion in space in 2017 and
has ambitious space probe designs with 33 years of constant acceleration to reach 3% of lightspeed: "The Cannae drive is also propellentless like the EMdrive but is a different design. They will test their system orbit in a cubesat in 2017 Cannae is not using an EmDrive thruster in their upcoming launch. Cannae is using it’s own proprietary thruster technology which requires no on-board propellant to generate thrust. In addition, this project is being done as a private venture. Cannae is only working with our private commercial partners on the upcoming mission." See: http://www.nextbigfuture.com/2016/12...llentless.html |
#47
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Emdrive might change the law of inertia (for the Earth too!)
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#48
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Emdrive might change the law of inertia (for the Earth too!)
China says tests of Propellentless EMDrive on Tiangong 2
space station were successful: "Dr. Chen Yue, Director of Commercial Satellite Technology for the China Academy of Space Technology (CAST) announced on December 10, 2016 that not only has China successfully tested EmDrives technology in its laboratories, but that a proof-of-concept is currently undergoing zero-g testing in orbit (according to the International Business Times, this test is taking place on the Tiangong 2 space station). Scientists with the China Academy of Space Technology claim NASA’s results ‘re-confirm’ what they’d already achieved, and have plans to implement it in satellites ‘as quickly as possible.’ ‘The establishment of an experimental verification platform to complete the milli-level micro thrust measurement test, as well as several years of repeated experiments and investigations into corresponding interference factors, confirm that in this type of thruster, thrust exists.’ Cast is a subsidiary of the Chinese Aerospace Science and Technology Corporation (CASC) and the manufacturer of Dong Fang Hong satellites." See: http://www.nextbigfuture.com/2016/12...llentless.html |
#49
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Emdrive might change the law of inertia (for the Earth too!)
On Sunday, December 4, 2016 at 4:15:28 PM UTC+13, wrote:
Cannae will try to prove propellentless propulsion in space in 2017 and has ambitious space probe designs with 33 years of constant acceleration to reach 3% of lightspeed: "The Cannae drive is also propellentless like the EMdrive but is a different design. They will test their system orbit in a cubesat in 2017 Cannae is not using an EmDrive thruster in their upcoming launch. Cannae is using it’s own proprietary thruster technology which requires no on-board propellant to generate thrust. In addition, this project is being done as a private venture. Cannae is only working with our private commercial partners on the upcoming mission." See: http://www.nextbigfuture.com/2016/12...llentless.html Meanwhile, Young Bae is awaiting funding for something that is known to work without question. http://ykbcorp.com/downloads/Bae_pho...ulation..pd f |
#50
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Emdrive might change the law of inertia (for the Earth too!)
Info about Propulsione Non Newtoniana (PNN)
At the end of 2016 our non newtonian drive F242 finally repaired http://www.asps.it/130h.jpg from http://www.asps.it/vol36.htm Nova Astronautica n.150 The pnn F242 Thrust about 7/8 the EMdrive thrust in http://www.intelligonews.it/articoli...rario-a-newton As soon as possible more info in Asps issue Nova Astronautica (quarterly) and in the fast blog https://neolegesmotus.wordpress.com/...ams-of-thrust/ |
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