At 2:33 PM 4/4/5, John Berry wrote: >Even if Ampere is correct as long as there is displacement current the >magnetic force from the vacuum displacement current would push on the >rail in a longitudinal manner. [snip] > / > / > / >------------------------------------------------------------------------/ >I >I >------------------------------------------------------------------------\ > \ > \ > \ [snip] >By having the conductors diverge a bit more thrust might be created, but >clearly the angle shown here is too steep.
You might want to check out US Pat. 5,142,861, by Schlicher et al. Column 8 line 12, states: "For two dimensional loop antennas, the integration of all forces around the conductor path equals zero. In three dimensions, this is not necesarily the case." Schlicher's predicted a force of 0.1 N to 0.4 N for 1000 amps for his conical version of the above. However, his analysis has errors. Also, NASA checked it out, or something similar, if I recall correctly. It is still ineresting Schlicher's proposed use of low temperature aluminum instead of a superconductor. Superconductor effects can thus be ignored or avoided, unless of utility. Zero power input is of great utility though, so a device that works in superconducting mode would be a huge plus. Unfortunately, the main problem is the flawed force analysis. I'll try to make a post you may find more relevant and interesting under the name "Coaxial Capacitor Thrustor." It is a design similar to what you suggest, but enhanced to 3d, and having other embellishements that I proposed in a collaboration some years ago. It didn't go anwwhere, due I think, to NASA's prior negative results in this arena. Regards, Horace Heffner
