Sorry; not interested in any more of your groupthink, doublethink, pseudo-science & astroturfing thought-police bullshit.
Mirroring, much?
Again, I am not reading your childish replies.
Despite your attempts to shut the stable door after the horse has bolted
Pantomime horses don't bolt. They frolic and nicker.
you yourselves insisted that a rocket was an Open System.
If you're referring to conservation of momentum, I disagree with that statement.
The "spaceship including fuel" I would consider an isolated system. The total momentum of this system does not change - Law of Conservation of momentum.
If you're referring to the Joule experiment, I agree - the engine is an open system because fuel is constantly being converted to gas inside the combustion chamber. Hence, your Joule experiment analogy fails, since that is very definitely not an open system. You're comparing apples and oranges.
You agreed that this Open System works by creating Pressure via Gasses.
Pressure is created via gasses, correct. That's what gases do. But if you're referring to conservation of momentum, this is not an open system: it is an isolated system.
If you're referring to the physical rocket engine design, yes it is open, i.e. the nozzle is open to the vacuum.
See how easy it is for you to pick cherries and make a rhubard crumble?
You agreed that this Open System is Finite.
I'm agreeing nothing until you clarify as above. Are we talking about conservation of momentum (isolated system)? Or are we talking about Joule free expansion (open system)?
I know what your next flawed argument will be: how can a system be both isolated and open!?!?
From the point of view of COM, we are looking at the entire system, i.e. rocket mass and fuel mass. Why? Because we know that in the absence of any external forces acting on this system, its net momentum must remain constant, regardless of any changes that occur inside the system. Physics 101 - Law of Conservation of Momentum. We MUST look at an isolated system for the law to apply. If you just look consider the rocket alone, and not the fuel, then the law doesn't apply, because the rocket itself is NOT isolated: it is acted upon by the fuel once burnt.
From the point of view of Joule expansion, that refers to a thermally isolated system with a constant volume, and a fixed amount of gas. However, in a rocket engine this clearly does not apply, because the rocket engine itself (not the entire spaceship/fuel assembly) is an open system: energy and mass is constantly being poured in at one end (the combustion chamber), and leaving via the other end (nozzle exit). In no way, shape or form is this a direct corollary to the Joule expansion experiment.
This Open, Finite System must therefore work by creating Pressure via Gasses in an Infinite Vacuum.
Following my arguments above, we can see you've constructed a strawman fallacy.
And there are no Laws of Physics that support this possibility.
Any neutral reader with the slightest knowledge of physics will agree with me.
See above - your argument isn't based in actual physics, it's based on a flawed interpretation, either deliberate or unintentional.
If deliberate, you're a troll who enjoys pulling people's puds.
If unintentional, then the Dunning-Kruger effect is very much in evidence.
You cannot prevent this.
I'm happy that anyone with a reasonable grasp of fundamental physical principles will be able to follow the thread and come to their own conclusions.
In the meantime, I'm going to go away for the weekend using my
GPS to get there. Before I go I'll check out some
satellite weather images to see if it's going to be cloudy. I'll watch some football on
satellite TV. While I'm doing all that, I'll be thinking "Wow, I must be hallucinating because Papa Legba's flawed interpretation of Newton's laws and massive cock-up with the Joule free expansion though experiment proves that rockets don't work in a vacuum."