A Possible Way to Explain the Mach Drive.
Mach who Einstein admired came up with what Einstein named Mach's Method. This is to say the cosmos is connected by gravity to all the rest of the masses in it.
The idea of the Mach Drive is that if you squeeze masses together you change the mass. This is easy to see by Newton's method; the nearer you move the same masses the more gravity they have, and so by relativity, if inertia is rather like gravity you've changed the inertia and the way the mass of the Mach Machine might interact with the entire cosmos.
Supposedly the rapid change in compression and moving masses outward of the machine by a piezoelectric slice of the pizza slices of the machine may allow the mass to get heavier, lighter, heavier, lighter as it moves ahead.
So far so good. And by the weight I haven't seen if this change in mass is seen with a machine like LIGO or by weight. Mostly the law of gravity seems enough evenso it might be worth more "evidence based events"..
While I make no ultimate claim about the viability off the Mach Drive, here's my own interpretation; As Mach believed, the masses are all connected. This would be by the speed of light field of LIGO.
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FOR MY EXPLANATION OF HOW THIS CONNECTION MIGHT WORK OR SEE LINK BELOW..
The idea that's been promoted for the Mach Drive which seems to put out real though not giant thrust in research is that it changes mass then moves in the space nearby where the mass is reduced before it changes and this gives energy of propulsion at no cost. This has been scoffed at by some as in violation of energy conservation.
I think it might be possible by way of changes in the density in the connection field just as solitons now make it possible to call around the world at low cost and high value at any rate! Solitons take the wave in the channel like in the old canal where it was observed that a wave of the right wavelength relative to speed wouldn't lose nearly as much energy and go much further down the line before it dissipates. This is because the wave is a resonance and like riding it's own surf it is more efficient.
So too it seems possible the Mach Drive might move forward into the inertial wave of LIGO (which may be much denser and slower than real gravity waves be as I believe because Einstein and Mach believed gravity and inertia are the same thing).
If this wave moves at the speed of light as in the LIGO events then we can find its density and this will tell us if the speed of resonance the Mach Drive might need to be viable based on the density and energy of the field.
(Even so like the solitons if this actually is viable (it's gotten stage II NASA funding and seems to be copied well on other machines by others who used machines like it) it would seem to have some cost to energy conservation! So if we know the resilience of this resonance, as with solitons we might much improve our experiment and theory because we know just how much the overall cost would be just as with other waves in resonance by how much the wave snaps back and its resonance and speed.
A way of connection of the Mach Drive with the rest of the cosmos without disproof of relativity might be by Modified La Sage Gravity. Click here for more.