>>137985873 gravitational "thrusters" (1 at each edge) is the optimal amount for a small aircraft like this one. With that kind of setup it can go in every direction, just by adjusting the thrust for each reactor.
It would be possible to use more thrusters of course, the same way quadcopters fly, and flying saucers were probably using more (those are old and now obsolete), but the system is perfected enough nowadays so more than 3 has become unnecessary for that kind of antigravity aircraft.
>>13798674Supposedly cold fusion.
