# Are there any real ways at least in theory to manipulate quantum vacuum for propulsion or energy generation? [duplicate]

US Navy was granted a patent for polarised vacuum propulsion using microwave radiation and high em energy resonating cavities. It seems to be a polarasible vacuum theory analog of alcubierre drive.

How far fetched are such ideas and is there any other way to pertrube vacuum modes like Casmir effect that could have potential application?

The point is why would rapidly spinning charges produces disturbances in vacuum as specified in the article?