....of a possible gravity motor,can be somewhere around us,in my opinion.
An useful opinion,cannot survive without a convincing proof in the real physical world.
Let's take into consideration a natural model,with some visible "spare parts" (masses) and some non-visible "links".
Regarding masses:Sun,Earth and Moon.
Regarding links:gravity and inertia.
About the natural model,we need no proofs:it works.
About a "craft-model" (gravity motor) ,we need a real proof,experiment.
Let's use the variable arm heavy hub pendulum concept,face-to-face the natural model:
-Sun-as a fulcrum and a gravity field.
-Earth-as a heavy hub/an in-out kinetic energy storage.
-Moon-as a variable arm pendulum.
An opinion is a belief,not a proof...yet.
All the best! / Alex
.....for the non interrupted motion (perpetuum mobile...) of the celestial bodies is so diverse.
The main characteristic of this general phenomenon is his highest degree of simplicity...and as a matter of fact, his diversity.
If we really intend to take this process as a model for a possible gravity motor,maybe the comet case is interesting.
A comet is a luminous heavenly body,consisting of a diffuse head nucleus and a long tail.
If a Sun-Earth-Moon pattern for a gravity motor needs no more than two opposite spokes/a lever "wheel" ,a comet pattern is even more...a "minimum minimorum design":one (apparent) spoke (tail) ,only !?
All the best! / Alex