IF gravity is largely resultant from the distortion of virtual particle orbits, then a manipulation of these orbits, singularly or by multiples could have gravitational effects leading to, with precise orbit modifications, generation of a gravitation vector force, directable and controllable.  It also seems possible to create "hawking radiation" using the same idea in the lab...these  ideas should start off with microscopic size areas being manipulated as each pair will have to be accounted for and biased accordingly with the desired orbit shape within a shielded vacuum. 

6 hours ago, hoola said:

IF gravity is largely resultant from the distortion of virtual particle orbits

Is there any reason to think that is the case?

I’m not even sure that “virtual particle orbit” means anything.