Gravitational Engine as Thermoacoustic Engine/Acoustic Refrigerator
“Inside Bob Lazar’s Craft As a Physicist” Part 1: Gravity and Time showed that small time dilation gradient of 10⁻¹⁶ counters the Earth gravity, and 10⁻¹³ gradient explained UFO accelerations measured by Dr. Windt thousand times greater than the Earth gravity.
and gravity is just time pressure — quantum fluctuations pressure from the faster-time side, which is physically expressed in gravitational formula that replaced Einstein’s GR (General Relativity theory of curved spacetime):
Thermoacoustic Heat Engine and Acoustic Refrigerator are two “opposite” devices, one is well described in https://en.wikipedia.org/wiki/Thermoacoustic_heat_engine
The “opposite” device, which is of our interest, is an acoustic refrigerator converting sound into “cold”. There are many explanations and demos for it on YouTube, here is the shortest:
Sound comes from the left side, mesh (or “stack” in the Wikipedia image) separator in between, with cooling happening on the right side of the tube (and heating on the left side of the tube). Such device is the best simile for the engine described by Bob Lazar, with a mesh of element 115, with faster (“warmer”) time above the core and slower (“colder”) time below. Time/quantum fluctuations “mechanics” is similar to temperature/Brownian Motion. And there are no moving parts in either device. Scale is different (between quantum fluctuations and acoustic waves), but principles are similar.
