Rockets do not work in the vacuum of space. You will believe anything "expert" scientists say.

a reply to: Phage

I already answered. What don't you agree with?

a reply to: NicSign

How are going to "put a vacuum on the end of the leaf blower?"

Wait, are you talking about a vacuum cleaner? You know that a vacuum cleaner blows air out of the back of it, right? It's a backwards leaf blower. That creates a force in the opposite direction so if the vacuum cleaner were strong enough, both it and the leaf blower would move.

a reply to: DoctorBluechip

That's not what he said.

Thrusters in space, control surfaces in the atmosphere.

I love when someone stops taking their meds and watches a few Youtube videos, and then comes and posts on ATS

Makes for some great entertainment

originally posted by: roadgravel
a reply to: DoctorBluechip

That's not what he said.

Thrusters in space, control surfaces in the atmosphere.

We know what he meant . Obviously the flaps wont work without atmosphere , but the topic is rocket propulsion and thrust .
Thrusters dont wont in space , they need atmosphere to be effective . The steering thrusters are mounted on the nose of the craft which is itself a control surface

a reply to: Phage

But didn't you know what vacuum does? It creates an area of low pressure. Remember pressure pushes, the vacuum does not suck. This creates airflow from the leaf blower intake and out the leaf blower. Why no opposite force?

a reply to: NicSign



Newtons 3rd law of physics. For every action, there is an opposite and equal reaction. A rocket engine does not need any atmosphere to function at all. Hot gases in the combustion chamber

push against the rocket itself, which racts to the force by being pushed in the opposite direction of the force applied by the gas, IE the opposite direction that the gas exits from in the exhaust nozzle. No air is needed for burning because all rockets that operate in space use an oxidizer, IE oxygen supply, that mixes with the fuel inside the engine, allowing it to combust.I assure you, rockets operate just fine in space. Someone has misled you, please do some more research.

a reply to: openminded2011

do you have any evidence to back your assurance. ??

a reply to: NicSign



What evidence would suffice? Its called physics. I just provided you with the facts, if you refuse to accept them, that's your right, but reality is reality.

a reply to: DoctorBluechip

Except that it's not the same at all. A thruster is just that. It uses thrust to cause the ship to move. A control surface is an airfoil. It causes air to deflect and uses that air to make the craft move. The two are not interchangeable.

Has OP admitted they believe in a flat Earth yet?

originally posted by: NicSign
a reply to: Phage

But didn't you know what vacuum does? It creates an area of low pressure. Remember pressure pushes, the vacuum does not suck. This creates airflow from the leaf blower intake and out the leaf blower. Why no opposite force?

There is an opposite force. Remember, a vacuum cleaner is just a leaf blower in reverse.

originally posted by: AdmireTheDistance
Has OP admitted they believe in a flat Earth yet?

No in so many words.

you do realize that the hot stuff coming out of one end is what pushes the rocket right?

a reply to: Phage

but the airflow is the same in both scenarios. Doesn't the leaf blower push pressure into lower pressure as you claim?

a reply to: cenpuppie

You realize you don't science right?

a reply to: NicSign

And you realise, you don't "science" correctly.

originally posted by: NicSign
a reply to: Phage

but the airflow is the same in both scenarios. Doesn't the leaf blower push pressure into lower pressure as you claim?

I didn't claim that.
It moves air. The one I pictured earlier does so at 412 cubic feet per minute. It produces 13 Newtons.
www.stihlusa.com...

Newton's third law: For every action, there is an equal and opposite reaction.

It's all that fire-type stuff coming out the back of the rocket that makes the rocket go vroooom! in the opposite direction. Fire goes one way, rocket goes the other way.

You got this now, right?

There are 3 basic principles that cause a rocket to produce thrust.

1.Objects at rest will stay at rest and objects in motion will stay in motion in a straight line unless acted upon by an unbalanced force.

2.Force is equal to mass times acceleration.

3.For every action there is always an opposite and equal reaction.

For a rocket in space newton's 3rd law comes into effect.The rocket pushes on the gas, and the gas in turn pushes on the rocket. Ironically rockets work better in space because they don't have the pressure of the atmosphere to slow down thrust.

The higher the velocity of the expanding gas the greater the thrust as it pushes against the rocket. To prevent a rocket from moving it must have considerably more mass than the pressure the expanding gas can create. For example I could take a co2 canister in space and it wouldnt be enough to move an astronaut noticeably. It would provide thrust just be so minor it would be difficult to tell. But now hook up 100 co2 canisters and I have this.
en.m.wikipedia.org...