Rockets cannot propel in space. Therefore no globe picture could have been taken

 There is no proof of an equal and opposite force from gas movement due to pressure gradient force


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Rockets need resistance like an atmosphere to push off of. There is no resistance in space

Rockets cannot stadium the extreme pressure differential in space

Yeah! Testify, brother! Testify!

There is no proof of an equal and opposite force from gas movement due to pressure gradient force


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Have you never used a co2 fire extinguisher?

In space, man! In space!

Oooh
Is skepti back in a new form?

For every reaction there is an equal and opposite reaction.

No Shit, read along . . .

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Rockets cannot stadium the extreme pressure differential in space

This Falcon Heavy Rocket does not blow up while launching Arabsat-6A.

Arabsat-6A Mission by SpaceX The "action" starts at 19:46.

Quote from: Tatumsid on June 08, 2019, 05:10:11 AM

There is no proof of an equal and opposite force from gas movement due to pressure gradient force


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Have you never used a co2 fire extinguisher?

And it pushes off the atmosphere l. If you used it in space or vacuum, it wouldn’t  provide thrust

Quote from: Tatumsid on June 08, 2019, 05:13:31 AM

Rockets cannot stadium the extreme pressure differential in space

This Falcon Heavy Rocket does not blow up while launching Arabsat-6A.

Arabsat-6A Mission by SpaceX The "action" starts at 19:46.

Wtf first the rocket starts moving sideways, then cuts off into fakery. Lol this only supports rockets not working in space

It blew up once it went to the ocean and out of sight

Exactly! Tell it like it is!

Enough of these shills!

I love the experiment with a balloon powered toy car and a vacuum cleaner.

In your face NASA!



Not sure why so many people struggle with this?

Propellant goes back, rocket goes forward.  Newton’s laws satisfied.

In space, man! In space!

Was that a reply to me? OK - Have you never used a co2 fire extinguisher in space?

I wonder why Tatumsid thinks that Newtons third law doesn't apply to gases in space but does to gases in an atmosphere? Does he think it applies to a machine gun fired in space? What if the bullets were made really small?

Quote from: turtles on June 08, 2019, 05:35:54 AM

Quote from: Tatumsid on June 08, 2019, 05:10:11 AM

There is no proof of an equal and opposite force from gas movement due to pressure gradient force


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Have you never used a co2 fire extinguisher?

And it pushes off the atmosphere l. If you used it in space or vacuum, it wouldn’t  provide thrust

What is the mechanism for a force to transfer from air to the rocket?

Quote from: Tatumsid on June 08, 2019, 06:18:57 AM

Quote from: turtles on June 08, 2019, 05:35:54 AM

Quote from: Tatumsid on June 08, 2019, 05:10:11 AM

There is no proof of an equal and opposite force from gas movement due to pressure gradient force


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Have you never used a co2 fire extinguisher?

And it pushes off the atmosphere l. If you used it in space or vacuum, it wouldn’t  provide thrust

What is the mechanism for a force to transfer from air to the rocket?

It’s called back-pressure like drag. Moving through air at high velocity causes a force in the opposite direction

Drag is a force opposing movement.

Also as you worded it the force requires motion. Rockets clearly start with zero velocity.

So actually rockets can propel in the space, if they can pass the barreer of the flat earth pool.



pool season started here. We have to teach swimming to the little rockets first. 



Actually I have made a prototype for a spaceship can swim and fly but since I am a flat earther hence NASA did not get it considered.

Are people trying to say that gasses that rocket pushes backwards have no mass?
Would that be the reason why rocket can't push itself off them?

LOL

Some people still don't understand how rocket works.
They use their wrong "explanations" to "prove" it doesn't.
Trying to wrongly use big words can only confuse those who don't understand, and make laugh those who do.

Let me make it as simple as I can:

Propeller needs air (external gasses along path) to grab portions and throw back, to push off them forward.
Rocket doesn't have propeller, and doesn't need one.
It works differently.

Liquid fuel consists of liquid hydrogen (or methane, or such) and liquid oxygen, in separate tanks.
Solid fuel is mixture of solid combustible material and oxidizer.

Fuel burns in combustion chamber, creating pressure.
Gasses under pressure blow out through the nozzle at high speed.
Rocket doesn't need atmosphere. It pushes itself off own gasses.

Here comes to work the Law of Conservation of Momentum.
Mass-of-ejected-gasses times speed-of-ejected-gasses (backwards) adds speed to the remaining mass of the rocket (forwards).
In vacuum gasses blow out at maximum speed, determined by design of the nozzle, namely the area of
the opening, and by the pressure in the combustion chamber.

At the very moment of the exit, at that spot is not vacuum any more, those gasses are there still under pressure.
At the next moment they were gone backwards, but the rocket already received the increase of speed forward,
ready to receive next increase by the next layer of gasses.

Rocket works best in vacuum. In atmosphere is less efficient for two main reasons.
One is air drag.
Another is, atmospheric pressure outside of the combustion chamber dampens the speed of exiting gasses,
which reduces the mentioned "mass-of-ejected-gasses times speed-of-ejected-gasses".

Quote from: sokarul on June 08, 2019, 12:20:20 PM

What is the mechanism for a force to transfer from air to the rocket?

It’s called back-pressure like drag. Moving through air at high velocity causes a force in the opposite direction

That does not explain rocket propulsion in the slightest. Drag, as you say, "causes a force in the opposite direction" and tends to slow the rocket down!

But rockets do "push against" something very massive! They push against the massive amount of burnt fuel ejected at very high velocity.

Are people trying to say that gasses that rocket pushes backwards have no mass?
Would that be the reason why rocket can't push itself off them?

LOL

Quote

Some people still don't understand how rocket works.
They use their wrong "explanations" to "prove" it doesn't.
Trying to wrongly use big words can only confuse those who don't understand, and make laugh those who do.

Let me make it as simple as I can:

Propeller needs air (external gasses along path) to grab portions and throw back, to push off them forward.
Rocket doesn't have propeller, and doesn't need one.
It works differently.

Liquid fuel consists of liquid hydrogen (or methane, or such) and liquid oxygen, in separate tanks.
Solid fuel is mixture of solid combustible material and oxidizer.

Fuel burns in combustion chamber, creating pressure.
Gasses under pressure blow out through the nozzle at high speed.
Rocket doesn't need atmosphere. It pushes itself off own gasses.

Here comes to work the Law of Conservation of Momentum.
Mass-of-ejected-gasses times speed-of-ejected-gasses (backwards) adds speed to the remaining mass of the rocket (forwards).
In vacuum gasses blow out at maximum speed, determined by design of the nozzle, namely the area of
the opening, and by the pressure in the combustion chamber.

At the very moment of the exit, at that spot is not vacuum any more, those gasses are there still under pressure.
At the next moment they were gone backwards, but the rocket already received the increase of speed forward,
ready to receive next increase by the next layer of gasses.

Rocket works best in vacuum. In atmosphere is less efficient for two main reasons.
One is air drag.
Another is, atmospheric pressure outside of the combustion chamber dampens the speed of exiting gasses,
which reduces the mentioned "mass-of-ejected-gasses times speed-of-ejected-gasses".

The argument is that the rocket doesn’t “push” the gas out and the force is provided by pressure gradient force. Pay Attention

A gas is a lot of molecules which are a gas because they don't stick together to form a solid or a liquid. They are always bouncing around. They bounce off of each other and they bounce off of the inside walls of any container they may happen to be inside of. In a closed container, they are bouncing against all the sides equally, creating an outward pressure but exerting a net zero force on the container as a whole, except outwards. The hotter the gas, the faster the molecules are moving and the harder they are hitting the sides of the container. If the gas is hot enough and the container weak enough, it can burst.

In a rocket engine one wall of the container has a hole in it (the nozzle). Fuel and oxidizer are injected into the chamber where it burns because it's fuel and oxidizer and that's what fuel and oxidizer do when they get hot enough, which is why a candle keeps burning once you light it. (The rocket engine has an igniter to start the burning, just like you light a candle with a match.) So now the gas gets really hot because it's burning and the molecules are moving very fast and hitting the sides of the chamber really hard. Pushing outward on the container really hard.

But there's a hole in one wall that the molecules escape through. So there's less pressure on that wall, which is always facing backwards so the rocket doesn't go the wrong way. Thus there's more molecules hitting the front wall than the back wall and that pushes the rocket forward. Newton's action/reaction is happening on the front side of the combustion chamber where a molecule hits that side of the chamber but then never hits the back side to even the pressure because there's a hole there.

This works in space because it doesn't matter where the molecules go as long as they miss hitting the back of the chamber because they go through the hole instead. It's a little more complicated because the molecules are also hitting each other, but the important part is that because of the hole in the back, more of them are hitting the front. This would work even if the Earth were round.

A gas is a lot of molecules which are a gas because they don't stick together to form a solid or a liquid. They are always bouncing around. They bounce off of each other and they bounce off of the inside walls of any container they may happen to be inside of. In a closed container, they are bouncing against all the sides equally, creating an outward pressure but exerting a net zero force on the container as a whole, except outwards. The hotter the gas, the faster the molecules are moving and the harder they are hitting the sides of the container. If the gas is hot enough and the container weak enough, it can burst.

In a rocket engine one wall of the container has a hole in it (the nozzle). Fuel and oxidizer are injected into the chamber where it burns because it's fuel and oxidizer and that's what fuel and oxidizer do when they get hot enough, which is why a candle keeps burning once you light it. (The rocket engine has an igniter to start the burning, just like you light a candle with a match.) So now the gas gets really hot because it's burning and the molecules are moving very fast and hitting the sides of the chamber really hard. Pushing outward on the container really hard.

But there's a hole in one wall that the molecules escape through. So there's less pressure on that wall, which is always facing backwards so the rocket doesn't go the wrong way. Thus there's more molecules hitting the front wall than the back wall and that pushes the rocket forward. Newton's action/reaction is happening on the front side of the combustion chamber where a molecule hits that side of the chamber but then never hits the back side to even the pressure because there's a hole there.

This works in space because it doesn't matter where the molecules go as long as they miss hitting the back of the chamber because they go through the hole instead. It's a little more complicated because the molecules are also hitting each other, but the important part is that because of the hole in the back, more of them are hitting the front. This would work even if the Earth were round.

Wow mag
You can figure all that out but cant figure out why the earth isnt flat?

The argument is that the rocket doesn’t “push” the gas out and the force is provided by pressure gradient force. Pay Attention

And your argument is flat out wrong.  Ask any physicist or engineer.

OP is a troll

The argument is that the rocket doesn’t “push” the gas out and the force is provided by pressure gradient force. Pay Attention

You said:

It’s called back-pressure like drag. Moving through air at high velocity causes a force in the opposite direction

Drag is in the wrong direction to propel an aircraft or rocket forward.

And the rocket does “push” the gas out by the very high pressure in the combustion chamber. For the SpaceX Merlin 1-D that chamber pressure is 9.7 MPa or 1,410 psi.
That engine (2016 version) produces a sea-level thrust of about 845 kN (190,000 lbf) and the Merlin 1D Vacuum engine has a thrust of 934 kN or 210,000 lbf.

Even the same engine produces a higher thrust in a vacuum than at sea level.
The Merlin 1-D has a vacuum thrust of 914 kN or 205,000 lbf and a sea-level thrust of 845 kN or 190,000 lbf.

FE Myth: Rockets cannot propel in space.

Busted

The argument is that the rocket doesn’t “push” the gas out and the force is provided by pressure gradient force. Pay Attention

The fact is that the part of the rocket-gas system propels mass of gas in one direction at certain speed and, as the consequence,
the rest of the mass of such system gains speed in the opposite direction, thanks to the Law of Conservation of Momentum.

A gas is a lot of molecules which are a gas because they don't stick together to form a solid or a liquid. They are always bouncing around. They bounce off of each other and they bounce off of the inside walls of any container they may happen to be inside of. In a closed container, they are bouncing against all the sides equally, creating an outward pressure but exerting a net zero force on the container as a whole, except outwards. The hotter the gas, the faster the molecules are moving and the harder they are hitting the sides of the container. If the gas is hot enough and the container weak enough, it can burst.

In a rocket engine one wall of the container has a hole in it (the nozzle). Fuel and oxidizer are injected into the chamber where it burns because it's fuel and oxidizer and that's what fuel and oxidizer do when they get hot enough, which is why a candle keeps burning once you light it. (The rocket engine has an igniter to start the burning, just like you light a candle with a match.) So now the gas gets really hot because it's burning and the molecules are moving very fast and hitting the sides of the chamber really hard. Pushing outward on the container really hard.

But there's a hole in one wall that the molecules escape through. So there's less pressure on that wall, which is always facing backwards so the rocket doesn't go the wrong way. Thus there's more molecules hitting the front wall than the back wall and that pushes the rocket forward. Newton's action/reaction is happening on the front side of the combustion chamber where a molecule hits that side of the chamber but then never hits the back side to even the pressure because there's a hole there.

This works in space because it doesn't matter where the molecules go as long as they miss hitting the back of the chamber because they go through the hole instead. It's a little more complicated because the molecules are also hitting each other, but the important part is that because of the hole in the back, more of them are hitting the front. This would work even if the Earth were round.

The gas is accelerated to low pressure by pressure gradient force. Did you not watch the explanation in the video. Simply stating what was taught in school without evidence, like simple experiment, is not sufficient.

PV=nRT. When the chamber is opened to space, you increase the volume thus decreasing pressure and thus decreasing the force applied to the rocket walls.

Why is it when you create airflow from a pipe, that is closed from one end only and has a small opening on the side near the closed end, using a vacuum, there is no opposite force in the pipe.

Why is it when wind blows on the back of your head, the air in front of you doesn’t push off your face as it moves away from you?

Quote from: Tatumsid on June 08, 2019, 05:23:47 PM

The argument is that the rocket doesn’t “push” the gas out and the force is provided by pressure gradient force. Pay Attention

And your argument is flat out wrong.  Ask any physicist or engineer.

No physicist or engineer can prove an equal and opposite force from gas movement due to pressure gradient force.