If you’re talking UAV hydrodynamic propulsion, you’re basically in “underwater drone” territory—UUVs/AUVs—and the main buckets are: - Propellers / ducted propulsors (shrouded props): the standard. Efficient, controllable, works across a lot of speeds. Most common on AUVs.

• Pump-jet / waterjet: pulls water in and shoots it out. Quieter and safer around stuff, good for higher-speed designs, but can be less efficient at low speed.

• Buoyancy-driven gliders: this is the sneaky long-range one—changes buoyancy to go up/down and uses wings to glide forward. Crazy endurance, slow as hell.

• Biomimetic fin/undulating propulsion: like fish—oscillating foils, tail fins, manta-ray style. Can be super maneuverable and potentially quieter, but more mechanically complex.

• Rim-driven thrusters: motor built into the ring, no central shaft. Can be quieter/smoother, used when stealth/noise matters.

• Supercavitation (niche/weapon-y): creates a bubble to reduce drag at insane speeds. Not really “normal drone” tech. If you meant a flying UAV that uses “hydrodynamic propulsion” in air, that’s usually the wrong term—air is fluid, sure, but people would just call it aerodynamic propulsion (prop, ducted fan, jet, etc.). Tell me what you’re actually searching for—underwater drone propulsion, or trans-medium UAP-style stuff, or like water-to-air transition designs—and I’ll narrow it down and give you the right keywords to Google/papers to look for.

Here are the ones in your context where it comes up (UAP/UFO propulsion, Fravor/Nimitz, ATIP, “gravity propulsion,” trans-medium stuff): - “How Would the US Government Handle Discovery of Alien Technology? (YouTube)” — Fravor/Nimitz incident and the “60,000 feet to ~sea level in a second” kind of performance talk. - ATIP / “Advanced Aeronautic Threat Identification Program” discussion (they mention doing an episode on ATIP and tie it directly to Commander David Fravor and the same drop-from-60k-feet claim). - Nimitz / Fravor (2004) capability discussion — the “could this have been classified drone tech back in 2004?” angle. - Ryan Graves episode (UAPs) — “no visible propulsion,” and the trans-medium (ocean/air) idea. - “Bob Lazar Explains How the Gravity Propulsion System Inside a UFO Works | Joe Rogan” — the whole gravity/Element 115 propulsion conversation. - Bob Lazar / UFO craft projects chatter — the “Project Galileo/Sidekick/Looking Glass” type stuff. - General secret black-project drone speculation — the idea that over decades they could’ve built drones that move in ways normal aerospace people wouldn’t expect. If you want, tell me whether you mean actual underwater UAV/AUV propulsion (pump-jets, gliders, etc.) or the UAP “propulsion” talk, and I’ll narrow it to just the relevant episodes.

Alright, here are the transcript chunks you’ve got in the internal context—these are the parts where they’re talking propulsion / Fravor / trans-medium / “gravity field” type stuff.

“...the propulsion system that he described in 1989 is exactly the same propulsion system that they witnessed this tick tock UFO using in 2007 or whatever it was. David Fraver had seen this thing off the coast of San Diego. So what those people that saw these crafts that were monitoring them in the military, they were saying they see these like every few months... They actively block their tracking systems and then they disappear faster than you can look at it... And then the Pentagon recently has come forth and released th...”

“...let's explain who David Fraber was. Yeah. He's a fighter jet pilot for the Navy and he discovered a UFO off the coast of San Diego that when they tracked it went from 60,000 feet to one feet in a second or less. They don't know how fast it went because it's, you know, the blip of a radar, but the thing traveled in an insane way that defies all of our understanding of propulsion... and this thing also actively was blocking their tracking systems, which is an act of war...”

“There's been many instances of sightings off the coast of California of things that plunge into the water or escape from the water and take off into space. With the field propulsion system as Commander Faver is describing, as Lazar described, it doesn't matter the medium of space, air or water. There's no resistance, no splash... Christopher Columbus had a UFO sighting? ...it's a written account...”

“What do you think of all this Pentagon UFO, we've recovered crafts, not of this world talk? ...I don't think we're the only intelligent life out there... but I also don't think we're hiding some alien spacecraft somewhere...”

“...the footage from the Mexican Air Force? ...it's IR footage... FLIR experts... have looked at it for me... And these are not lights in the distance. These are craft, very similar to what Commander Faber talks about without plumes, without heat signatures, you know, non-traditional field propulsion systems. We don't have that...”

“...have you communicated with anybody that has any thoughts on what these things are doing... ? No... I said... they were observing... Number two is they were communicating because I think... there was something under the water...”

“...There was talk of weapon systems. There were different projects. Project Galileo. Project Sidekick was supposed to be weapon applications of the craft. Project Looking Glass had to do with time...”

“...This is a non reactionary field propulsion system. Everything we know is a reactionary propulsion system... This is a gravitational field propulsion system... 1952, there was a huge flyover of Washington DC... Jets were scrambled... a policy was started... it crashed the teletypes...”

If you want, tell me which specific episode you mean (Fravor ep, Lazar ep, Mike Baker ep, etc.), and I can format it like a clean “full transcript” per episode—but with what you gave me here, this is the complete text I’ve got.