I envision a LERN space engine to be a variant of the polariton LASER. The LASER window will be transparent to infrared light which would be the engine's propellant.
Superconductivity would be supplied at high temperatures of about 800C and supported by the LENR reaction. Such a LASER could be built now using a properly configured Ni/H reactor today with an infrared transparent wall installed at one end of the reactor (the thruster end). The Key to this design concept is the material characteristics of the LASER window. Many ceramic materials, both glassy and crystalline, have found use as optically transparent materials in various forms from bulk solid-state components to high surface area forms such as thin films, coatings and fibers. Such devices have found widespread use for various applications in the electro-optical field including: optical fibers for guided lightwave transmission, optical switches, laser amplifiers and lenses, hosts for solid-state lasers and optical window materials for gas lasers, and infrared (IR) heat seeking devices for missile guidance systems and IR night vision. * * On Thu, Jun 27, 2013 at 12:19 PM, francis <[email protected]> wrote: > Axil,**** > > The waveguide and the microwaves delivered to it are the > medium for the EM drive, there is no hydrogen or Ni powder involved > although I suspect it might benefit from it but creating a magnetically > transparent window would degrade the cavity- perhaps an aperature with the > proper geometry could divide a portion of the microwave energy assuming > thrust is in the same direction as the magnetic radiation but Shawyer > claims his device relies on SR which makes me question any need to “direct” > thrust outside the device – if he can segregate particle pairs with > microwaves similar to Casimir effect segregating larger virtual particles > then he can start to play games with time dilation- reports that > spontaneous emission rates are delayed in microwave cavities makes me > suspect that gas atoms in a waveguide are subjected to longer wavelengths > as opposed to shorter wavelengths in a Casimir cavity but in both cases I > believe it is a matter of local segregation by vacuum wavelength that will > sum equal to the isotropy and the trick is to arrange the playing field to > exploit one region in favor of another. My point is the inner surfaces can > be made to exist in different inertial frames by virtue of different vacuum > wavelengths regions – and the normal cancelation of rf pressure can become > unbalanced and accumulate in the resonant cavity. IMHO this is how he > accumulates thrust without propellant by instead pushing unevenly against > the temporal dimensions of the inner walls.**** > > Fran**** > > ** ** > > Axil > Axil<http://www.mail-archive.com/[email protected]&q=from:%22Axil+Axil%22> > Thu, > 27 Jun 2013 08:09:32 > -0700<http://www.mail-archive.com/[email protected]&q=date:20130627> > **** > > *"the system is a Faraday shield and a magnetically transparent window*** > * > > would release the working medium." ***** > > ** ** > > Is it your opinions that a the system with a magnetically transparent**** > > window that holds the working medium cannot be designed?. "**** > > ** ** > > ** ** >
