4 rockets on launch pads at the same time for 4 booms? Posts at 1:30 and 1:36 are pretty interesting to read. Links in comments.
(media.greatawakening.win)
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Exactly, the exhaust action pushes the air and the equal and opposite reaction is the thrust. When there's no air, there's nothing to maintain that thrust.
On a smaller scale, this can be demonstrated using ionic wind for thrust, if placed in a vacuum chamber, once the air levels drop so does the thrust because there's not enough material to push.
Wrong. Pressure is differential. We are at 1 atmosphere now. That’s why we would “blow up” in space
Inside the rocket is 1,000-1,200 psi of hot gas around 5,000 F. Rockets are insulated with rubber (solid rocket boosters) as steel melts at 1,700
At the nozzle throat, the exiting gas is supersonic, but rapidly slows down when expanding into the nozzle cone. So that’s where the thrust is. Not against the atmosphere; against exhaust gasses immediately behind the nozzle throat
https://www.grc.nasa.gov/WWW/k-12/rocket/nozzle.html
First, thanks, that gives a bit better understanding of what you meant by pushing against the exhaust; combustion is high pressure, the throat is a pressure drop, and the high velocity combustion pushes against the low velocity exhaust. Unfortunately, that only gets you half-way there without disproving my point as that system still requires the back pressure of an atmosphere, where dropping the exterior pressure to ~0 means that the low pressure after the neck is going to have a relative suction from the near vacuum.
That will produce one of two effects; a) the combustion process gets sucked through the neck which will need far more combustion to maintain the same thrust, or b) because the 1000-1200psi in the combustion chamber has ~0 pressure instead of atmosphere will gradually increase to ~14000-60000psi.
if a) the efficiency drops and far more fuel is required. if b) the whole system fails.
Ex of how pressure vessels are relative to the system they are in: https://www.youtube.com/watch?v=bSZMNu4PWf8 (2:28-2:33).
Which brings me back to the point, that if space travel is really going on, it's using some different methodology than what we are presented, OR, space is not the vacuum we are taught.
Counterpoint time, I have 2 main pieces of scientifically validated and peer-reviewed pieces of evidence that the earth is a contained system, that Christians might call the "firmament".
The first, I've mentioned, and the most common counter is "gravity" (although gravity is the weakest force that does not exist at the quantum level). You cannot have 2 differential pressure systems without a barrier between them, and just like in a propane tank, the top of the tank will have a lower pressure than the bottom, but if you open it up it will, and relatively quickly, balance with the atmospheric pressure (just don't light a match if you plan to test that out).
The second, and stronger argument, is that there exists an electrostatic gradient on the planet that has been measured at ~100V/meter up to 80km (where the ionosphere begins), that's 80kV relative to earth ground. Electrostatic gradients exist within capacitance, capacitance can only exist between two materials with a gap between them, the most commonly known is that the air/water friction can increase the electrostatic voltage through friction until there is the breakdown of the medium and the effect we call lightning (even though we don't see lightning from 80km).
What you're describing is axial pressure leading to tangential force, a concept that works great where there is atmospheric pressure to act against.
When there's no atmosphere, there's nothing to push against.
An equivalent would be like trying to run up stairs that are collapsing, there's not the back pressure and while you might push the stair downward, it's not going to lead to the same upward acceleration.