It's a way of propelling a spaceship through space without the need for fuel like other traditional methods and the point is that you're completely missing people are making up any old bullshit about it instead of looking at the actual explanations of the inventor who discovered it. Consider it the same as electric car engines where you only have one moving part, it's the same sort of principle except it's been applied to space instead so that will mean less maintenance is required as well.
If you read my link as well, it's also not a theory, it's actually been tested, it's just on such a small scale people choose to dismiss it as you have.
I did read it. And I don't dismiss it.
Your electric car analogy seems appropriate.
Electric cars have batteries that store energy. The device in the articles also requires energy: "The device (engine) requires an electrical power source to produce its reflecting internal microwaves but does not have any moving parts or require any reaction mass as fuel"
So, just like I said before, several times: energy is being converted into motion. But you still need an energy source.
Maybe you and I are in violent agreement here as opposed to some of the others in this thread that are claiming there is a new engine that gives you motion without input energy.
It does require energy to operate, that's the whole point of it generating microwaves, it's just a matter of finding a lasting power supply for it, the problem is there are morons as I've said who are confusing the issue and completely misunderstanding what It actually does. So yes, it's not frictionless and doesn't operate via dark matter or quantum physics, but in theory it should be a lot more efficient than those stupid oversized rocket fuel engines we have now, it will be a long way off before it becomes viable for proper space flight especially with the lack of funding it has but it's something very promising.
I'm still wrapping my head around the idea and researching it, but it's certainly not impossible and it doesn't break the laws of physics etc. as some stupid idiots are trying to claim, hell we might even see much smaller spaceship designs because of this thing because of how tiny it is compared to the stuff NASA creates, even if it turns out it can't be used for deep space exploration it could still be used for land based vehicles because of how it generates thrust.