Commander Davenport oxygen tanks
Commander Davenport oxygen tanks is the claim that the Apollo lunar stays could not have happened, because the breathing gas would have required pallets of industrial cylinders, or else a liquid-oxygen plant, inside the lunar module.
Who he is
Commander Davenport posts as Cmdr Davenport on Instagram, @cmdrdavenport. On The Vancrux Podcast of 2 September 2026 he said he had been talking about conspiracies for about 15 years and had only been posting publicly for about three months, and that Instagram was where to find him.[1] A legal name is not given on that episode or on the later show notes.
The long interview is Eddie Bravo's Look Into It, episode 137, published 8 October 2026. Bravo introduces him as an oxygen-tank expert and says the subject is the tanks "supposedly used on the moon missions."[2] Bravo is a recurring guest on The Joe Rogan Experience. Davenport is not the commander who appeared on that show. That guest was retired Navy pilot David Fravor, on episode 1361 in 2020, talking about a UFO intercept.[3]
The four-minute cut quoted below was posted the next day on Flat Earth Dave's channel, titled "Moon Landing DEBUNKED! There is no way to refute this!"[4] In it he says he managed an industrial gas plant for years, and that nobody knows more about tanks than he does.
The argument
The clip takes the time on the Moon as 21 hours for two men.[4] It then says the breathing gas would have been about 20 percent oxygen and 80 percent nitrogen, the mix of ordinary air. Tanks in the late 1960s, he says, were steel, about 65 pounds when full, and the valves had no safety relief. A dent and a fast pressure change would break a small foil barrier so the gas left at one point and the cylinder spun in place instead of flying off. He says each astronaut would have needed 25 of those tanks, and that two full pallets would not fit in the lunar module.
If the answer is liquid oxygen, he says the crews would also have needed liquid nitrogen, so the two could be mixed into breathable air. Moving liquid from one vessel to another, he says, takes a pump, and a pump takes compressed air. The smallest air tank he allows is about the size of a lawn mower. The one needed to make the conversion "in a timely manner" is about the size of a golf cart, plus a 1960s vaporizer. Heat to turn the liquid into gas, he says, would have come from the engine, and engines of that period could not run in space because they burned fuel. Filling each bottle from the vaporizer would take a wrench the size of a forearm. He says there is no record of this work, so it did not happen, and that none of the equipment would fit. That, he says, proves the landing was fake.
He then says the backpacks were not 80-cubic-foot cylinders. They were "the 35s, the skinny oxygen tanks that you see in hospitals." Those would have to be weighed so they were not overfilled, because the valves had no safeties, and he asks how anything is weighed in the Moon's gravity. If there was no pump, he says the only way to move the gas is to flip the supply tank upside down, and that this needs the atmospheric pressure of Earth. He finishes by saying the job needs at least 500 square feet, and that the landing has been debunked.
The record
The hardware is on Apollo oxygen. The short version is that the flight tanks were not welding cylinders, and the crews did not mix air.
Apollo 11 was on the surface for 21 hours 36 minutes. The walk outside was 2 hours 31 minutes.[5] Later crews stayed longer. Apollo 17's surface stay was about 75 hours, in three walks. The 21-hour figure is the first landing's time on the ground, not one continuous backpack fill and not the pattern for every flight.
The cabin gas, once the ship was in flight, was pure oxygen: about 5 psi in the command module and about 4.8 psi in the lunar module. The suit loop on a walk was about 3.7 to 3.9 psi, also oxygen.[6][7] A 60 percent oxygen, 40 percent nitrogen mix was used on the pad, then bled off. There was no liquid nitrogen to blend into "breathable air" on the Moon.
Design use for the crew was 1.8 pounds of oxygen per man per day.[6] Twenty-one hours at that rate is about 1.6 pounds per man. The early backpack bottle held 1.12 pounds at 850 psi. The bottles on Apollo 15, 16, and 17 held 1.75 pounds at 1,410 psi.[8][9] The lunar module carried one descent-stage tank of 48 pounds at about 3,000 psi, and two ascent tanks of 2.4 pounds each.[7] The service module carried cryogenic tanks of about 330 pounds each, Inconel, 4.75 cubic feet, held near 900 psi by electric heaters. Two flew through Apollo 13. Three flew from Apollo 14 on.[10] Those masses are the flight supply. They are not 25 steel cylinders of 65 pounds per man.
How the gas was moved
The service-module tanks were filled on the ground from a liquid-oxygen dewar. In flight the oxygen was already supercritical, and it left the tank when the fuel cells and the cabin called for it. Heaters held the pressure. No air compressor, no vaporizer cart, and no rocket engine were in that path.
The lunar module stored oxygen as gas. A regulator dropped the descent-tank pressure to about 900 psi for the cabin and for backpack refill. Between walks the crew connected a hose to the backpack fill fitting and opened the fill valve. The Apollo 11 checklist allows about two minutes for a partial charge and about 70 minutes for a full one.[11] Quantity was a pressure reading. A pressure gauge does not ask how much the bottle weighs in one-sixth gravity.
Flipping a cylinder is a way to decant some liquid industrial bottles on Earth. The backpack bottle was already a high-pressure gas bottle, and the suit was a few psi, so the gas moved through a regulator. The vacuum outside the ship is on the outside of the plumbing. It does not have to "apply" for gas to flow from 1,000 psi to 4 psi.
The lunar-module descent engine was a hypergolic rocket. It carried its own oxidizer, and it was not the heater for the breathing supply. A foil burst disk that lets a damaged welding cylinder spin in place is a feature of some transport cylinders. It is not the lunar-module oxygen system.
See also
References
- ↑ Jeevan Matharu, "What Is the Moon, Are Nuclear Weapons Fake, and Critical Thinking, with Commander Davenport", The Vancrux Podcast, 2 September 2026.
- ↑ Eddie Bravo, "COMMANDER DAVENPORT on Look Into It with Eddie Bravo episode 137", 8 October 2026.
- ↑ Joe Rogan Experience #1361, Cmdr. David Fravor and Jeremy Corbell.
- ↑ 4.0 4.1 "Moon Landing DEBUNKED! There is no way to refute this!", Flat Earth Sun, Moon & Zodiac Clock app channel, 9 October 2026. Runtime 4 minutes 45 seconds.
- ↑ Apollo 11, NASA.
- ↑ 6.0 6.1 F. H. Samonski Jr. and E. M. Tucker, Apollo Experience Report: Command and Service Module Environmental Control System, NASA TN D-6718 (1972).
- ↑ 7.0 7.1 R. J. Gillen, J. C. Brady, and F. Collier, Apollo Experience Report: Lunar Module Environmental Control Subsystem, NASA TN D-6724 (1972).
- ↑ Hamilton Standard, Apollo Portable Life Support and Oxygen Purge Systems.
- ↑ Hamilton Standard, Portable Life Support System.
- ↑ R. K. M. Seto, C. E. Barton, and J. E. Cunningham, Apollo Cryogenic Integrated Systems, TRW (1971, changed 1972), Table 2.1.
- ↑ Apollo 11 final EVA procedures.