1

Science & Alternative Science / Re: Do rockets push off the air?

« Last post by Action80 on Today at 07:54:51 PM »

Joule's expansion.

It is about gas freely expanding when it is released to a vacuum.

Sorry, but Joule (not Joule’s) expansion is not the same thing as Joule’s Law. Gases expanding in space has nothing to do with the reaction force of the combustion moving the rocket.

Yeah, Joule has more than one.

Gas, when released to vacuum, performs 0 work.

It is a law of physics.

It is named after Joule.

Ergo, Joule's Law.

It is the product of the combustion that moves the rocket, you dyngus.

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Science & Alternative Science / Re: Do rockets push off the air?

« Last post by Action80 on Today at 07:52:04 PM »

You are clearly stating the gas exhaust (something which is part of the rocket, a single closed system, as something entirely separate, like the other person.

It is foolish and you are writing crapola.

You are objectively wrong. Two people attached to each other is a closed system in the same way gas inside a fuel tank is.

Trying to claim a pair of people are a single unit...FUCKING HILARIOUS!!!

Tell you what, Copernicus...

Draw a goddamn diagram of a pair of people acting as a single closed system, while at the same fucking time pushing off each other so they can go opposite directions, and submit the diagram for critique to a science professor.

Once he okays that piece of crap, then post it here with the verification and I'll concede, okay?

A person pushes off of you, moving you in the opposite direction. The gas pushes off of the rocket, moving the rocket in the opposite direction. Both examples start as closed systems, and end with two parts separated by the force.

Just more crap that is so goddamn wrong it boggles the mind.

You are truly a piece of work.

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Science & Alternative Science / Re: Do rockets push off the air?

« Last post by Realestfake on Today at 07:49:37 PM »

Joule's expansion.

It is about gas freely expanding when it is released to a vacuum.

Sorry, but Joule (not Joule’s) expansion is not the same thing as Joule’s Law. Gases expanding in space has nothing to do with the reaction force of the combustion moving the rocket.

4

Science & Alternative Science / Re: Do rockets push off the air?

« Last post by RonJ on Today at 07:48:23 PM »

Yes, the gas would freely expand once it was outside of the rocket engine.   At that point the exhaust gas mass would have already been accelerated and an equal and opposite force would be applied to the forward end of the combustion chamber.  The fuel is not being burned in a vacuum but inside the combustion chamber enclosure.  A rocket would be more efficient if the gas was dispersed immediately once it exited the rocket.  The action – reaction part would already be completed. 

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Science & Alternative Science / Re: Do rockets push off the air?

« Last post by Action80 on Today at 07:46:49 PM »

You have absolutely no idea what you are writing. Gas released to vacuum performs 0 work. It freely expands.

Joule's Law.

That is literally not what Joule’s Law is. Joule’s Law is about the proportionality of heat generated and current through a conductor. I think we’re about wrapped up here.

Joule's expansion.

It is about gas freely expanding when it is released to a vacuum.

Forms no plume.

You are wrapped alright. Probably in a straight jacket or something.

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Science & Alternative Science / Re: Do rockets push off the air?

« Last post by Realestfake on Today at 07:44:34 PM »

You are clearly stating the gas exhaust (something which is part of the rocket, a single closed system, as something entirely separate, like the other person.

It is foolish and you are writing crapola.

You are objectively wrong. Two people attached to each other is a closed system in the same way gas inside a fuel tank is.

A person pushes off of you, moving you in the opposite direction. The gas pushes off of the rocket, moving the rocket in the opposite direction. Both examples start as closed systems, and end with two parts separated by the force. And neither examples have anything to do with atmosphere.

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Science & Alternative Science / Re: Do rockets push off the air?

« Last post by Realestfake on Today at 07:41:12 PM »

You have absolutely no idea what you are writing. Gas released to vacuum performs 0 work. It freely expands.

Joule's Law.

That is literally not what Joule’s Law is. Joule’s Law is about the proportionality of heat generated and current through a conductor. I think we’re about wrapped up here.

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Science & Alternative Science / Re: Do rockets push off the air?

« Last post by Action80 on Today at 07:40:02 PM »

Inside a combustion chamber there is the introduction of a mass of fuel at a low relative velocity.  The fuel mass is set on fire.  That releases energy.  One end of the combustion chamber is closed to the product of the combusted fuel.  The other end is open to the outside of the engine.  Since the pressure is lower on the outside, the combusted fuel accelerates out in that direction.  The accelerated fuel mass produces a force equal and opposite to its acceleration vector. 
 
Any pressure on the outside of the rocket engine will inhibit the exhausts acceleration.  Since the force is proportional to the mass acceleration the less external force outside the rocket engine the more force will be produced.  This means that a rocket will be more efficient in a vacuum than in an atmosphere.

This is correct.

This in incorrect. Gas released to a vacuum performs 0 work.

Joule's Law.

Trying to equate two people pushing off each other to the operation of a rocket is just plain stupid, so do everyone a favor and stop posting bs.

Do explain  a person pushes off of you, moving you in the opposite direction. The gas pushes off of the rocket, moving the rocket in the opposite direction. Both examples start as closed systems, and end with two parts separated by the force.

You are clearly stating the gas exhaust (something which is part of the rocket, a single closed system, as something entirely separate, like the other person.

It is foolish and you are writing crapola.

Look, I don't care how many screwed-up alts you want to recruit to chime in.

As long as your alive and post crap like tyou are posting now, you will remain wrong.

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Science & Alternative Science / Re: Do rockets push off the air?

« Last post by Action80 on Today at 07:36:20 PM »

Inside a rocket's combustion chamber there is the introduction of a mass of fuel at a low relative velocity.  The fuel mass is set on fire.  That releases energy.  One end of the combustion chamber is closed to the product of the combusted fuel.  The other end is open to the outside of the engine.  Since the pressure is lower on the outside, the combusted fuel accelerates out in that direction.  The accelerated fuel mass produces a force equal and opposite to its acceleration vector. 
 
Any pressure on the outside of the rocket engine will inhibit the exhausts acceleration.  Since the force is proportional to the mass acceleration the less external force outside the rocket engine the more force will be produced.  This means that a rocket will be more efficient in a vacuum than in an atmosphere.

You have absolutely no idea what you are writing. Gas released to vacuum performs 0 work. It freely expands.

Joule's Law.

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Science & Alternative Science / Re: Do rockets push off the air?

« Last post by Realestfake on Today at 07:30:54 PM »

Inside a combustion chamber there is the introduction of a mass of fuel at a low relative velocity.  The fuel mass is set on fire.  That releases energy.  One end of the combustion chamber is closed to the product of the combusted fuel.  The other end is open to the outside of the engine.  Since the pressure is lower on the outside, the combusted fuel accelerates out in that direction.  The accelerated fuel mass produces a force equal and opposite to its acceleration vector. 
 
Any pressure on the outside of the rocket engine will inhibit the exhausts acceleration.  Since the force is proportional to the mass acceleration the less external force outside the rocket engine the more force will be produced.  This means that a rocket will be more efficient in a vacuum than in an atmosphere.

This is correct.

Trying to equate two people pushing off each other to the operation of a rocket is just plain stupid, so do everyone a favor and stop posting bs.

Do explain  a person pushes off of you, moving you in the opposite direction. The gas pushes off of the rocket, moving the rocket in the opposite direction. Both examples start as closed systems, and end with two parts separated by the force.