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It's 2015 and you aren't even close to owning a Spaceship

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luckyfred

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4140 on: November 25, 2015, 02:38:00 PM »
Quote from: Papa Legba on November 25, 2015, 02:31:11 PM

Anyhoo; none of you Derfers liked this post, so here it is again:

Quote from: Papa Legba on November 25, 2015, 02:13:44 AM
Rockets work by creating a pressure differential between themselves & the medium through which they move.

When that medium is removed - as in the case of a vacuum - then rockets cannot work.

This is absolutely elemental stuff; yet you will never, ever grasp it...

I leave the reason for your continued denials & ignorance up to neutral readers to deduce for themselves.

Now; Carry On Lying!

and this isn't your own admission of being a troll?

keep postin same stuff to keep people arguing with u.

let's play a game, u keep postin that and i keep postin this


the first to post on the 1000th page wins.

since u're a child u should like games, aren't u, cindy?
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Papa Legba

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4141 on: November 25, 2015, 02:51:42 PM »
Well, as you said this:

Quote from: luckyfred/tomfi/selene/troll/etc. on November 25, 2015, 02:26:48 PM
either way i just keep harrasing u

And are also a proven Liar, Sock-puppeteer & disinfo-troll, I guess you'll do whatever you need to do in order to prevent any neutral reader from learning anything new...

So; let's just see what happens, eh?

Until then; Carry On Lying!

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Papa Legba

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4142 on: November 25, 2015, 02:57:51 PM »
Quote from: Mainframes on November 25, 2015, 02:33:42 PM
A gas exposed to vacuum does not move straight towards the vacuum.

Incorrect.

Where else would it move except directly towards the area of lowest pressure?

You know, like a vacuum?

Pressure-gradient forces & all that?

Ya know..?

Bit of a slow-poke, aintcha mainframes/markjo/sokarul/who-ever-the-hell-is-currently-typing-your-shitposts?
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markjo

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4143 on: November 25, 2015, 03:03:24 PM »
Quote from: Papa Legba on November 25, 2015, 02:05:36 PM
Quote from: markjo on November 25, 2015, 01:52:11 PM
Since when does free expansion apply to chemical reactions releasing large amounts of energy?

Ever since that large amount of energy was in the form of a GAS, perhaps?
Nope.  Guess again.  If there is a change in the temperature of the system, then free expansion does not apply.  Burning gas in a combustion chamber definitely changes temperature of the system.
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luckyfred

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4144 on: November 25, 2015, 03:05:57 PM »
Quote from: Papa Legba on November 25, 2015, 02:51:42 PM
Well, as you said this:

Quote from: luckyfred/tomfi/selene/troll/etc. on November 25, 2015, 02:26:48 PM
either way i just keep harrasing u

And are also a proven Liar, Sock-puppeteer & disinfo-troll, I guess you'll do whatever you need to do in order to prevent any neutral reader from learning anything new...

So; let's just see what happens, eh?

Until then; Carry On Lying!

neutral reader will believe u of course, why shouldn't believe to a troll who keeps evading any proof against him and u just poking everyone with his continuos insults?

what was i thinking when i posted link and images to articles and books used by engineers.........
we should all believe u, mighty papa/cindy, afterall is your word against all the scientific comunity, there's no doubt to whom we should believe.
ahahahahahahahahhahaah
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Papa Legba

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4145 on: November 25, 2015, 03:13:22 PM »
Quote from: markjo on November 25, 2015, 03:03:24 PM
  Burning gas in a combustion chamber definitely changes temperature of the system.

Burning gas in a combustion chamber that is open to the vacuum of space?

Good luck with that, Psycho!

Quote from: luckyfred/tomfi/selene/troll/etc. on November 25, 2015, 02:26:48 PM
either way i just keep harrasing u

Yep; you weren't Lying there...

Makes a change, don't it?

Quote from: rabinoz on November 25, 2015, 03:09:55 PM
No, space is not a vacuum!

LOL!!!

But wait!

Quote from: rabinoz on November 25, 2015, 03:09:55 PM
So of course papa Legba is absolutely correct.

Oookay; you're just another shitposting Troll.

Carry On Lying, Losers!
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markjo

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4146 on: November 25, 2015, 03:23:09 PM »
Quote from: Papa Legba on November 25, 2015, 03:13:22 PM
Quote from: markjo on November 25, 2015, 03:03:24 PM
  Burning gas in a combustion chamber definitely changes temperature of the system.

Burning gas in a combustion chamber that is open to the vacuum of space?

Good luck with that, Psycho!
Mix fuel and oxidizer then put a spark to it. 

How hard can that be to understand?

Or, easier yet, mix both parts of a hypergolic fuel.

You can even just run hydrogen peroxide through a silver mesh like the jetpack guys do.
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rabinoz

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4147 on: November 25, 2015, 03:39:39 PM »
Quote from: Papa Legba on November 25, 2015, 02:31:11 PM
Rockets work by creating a pressure differential between themselves & the medium through which they move.
When that medium is removed - as in the case of a vacuum - then rockets cannot work.
This is absolutely elemental stuff; yet you will never, ever grasp it...
I leave the reason for your continued denials & ignorance up to neutral readers to deduce for themselves.

Now; Carry On Lying!
Who could suggest Papa Legba of lying?  He knows more about everything than all the experts, but there is a little logical point in what he says about pressure differential. He says "Rockets work by creating a pressure differential between themselves & the medium through which they move."
We KNOW even outer space is not a vacuum, but just a very low pressure region, so surely he would get a bigger "pressure differential" and more thrust in outer space than under normal air pressure!
Of course a vacuum is just this extremely low pressure taken to its ultimate limit, so why would the rocket not work there too?
All the thrust equations I have seen have the thrust INCREASING as the ambient pressure falls, so what would suddenly stop it working in the limit.
Since Papa Legba says a rocket will NOT work in a vacuum, would he please tell us EXPLICITLY (yes with an equations - maths and stuff) just how ambient pressure affects thrust.
Mind you one of the few references I could find that were "similar" to his "Rockets work by creating a pressure differential" is:
"Contrary to popular belief, reaction motors do not obtain thrust by "pushing" against the medium in which they are operating. Thrust is developed by increasing the momentum of the working fluid and creating a pressure differential therein. Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. This principle forms the basis for the motion of all self-propelled objects. Pressure differentials are employed to move propeller-driven aircraft as well as rockets and jet-propelled missiles. By definition, a reaction-propelled vehicle is one containing within its structure its own source of propulsion, i.e., a reaction-type motor." from http://fas.org/man/dod-101/navy/docs/fun/part16.htm
Of course they are just part of the "conspiracy"!
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Mainframes

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4148 on: November 25, 2015, 03:57:21 PM »
Quote from: Papa Legba on November 25, 2015, 02:57:51 PM
Quote from: Mainframes on November 25, 2015, 02:33:42 PM
A gas exposed to vacuum does not move straight towards the vacuum.

Incorrect.

Where else would it move except directly towards the area of lowest pressure?

You know, like a vacuum?

Pressure-gradient forces & all that?

Ya know..?

Bit of a slow-poke, aintcha mainframes/markjo/sokarul/who-ever-the-hell-is-currently-typing-your-shitposts?

The gas doesn't move directly towards the vacuum, there is no force to change its direction. Each gas particle will continue in exactly the same direction as it was travelling before. Now, eventually the gas particles will find their way out of the container after having rebounded off the walls of said container.

Here's a hypothetical question. Answer honestly. If a container of gas was reduced to absolute zero such that each particle of gas was perfectly stationary and the container was then opened to vacuum. What would happen?
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Papa Legba

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4149 on: November 25, 2015, 04:12:54 PM »
Quote from: markjo on November 25, 2015, 03:23:09 PM
You can even just run hydrogen peroxide through a silver mesh like the jetpack guys do.

Jetpack Guys Innnnn Shpaaaaaayzhee!!!111!!1

THIS IS NOT A SHITPOST!                            REMAIN CALM!                        WE REPEAT - NOT A SHITPOST!                 DO NOT PANIC!
Quote from: rabinoz on November 25, 2015, 03:39:39 PM
Who could suggest Papa Legba of lying?

You, I bet.

Let's see...

Quote from: rabinoz on November 25, 2015, 03:39:39 PM
Blah blah blah time wasting fail & wrong & your life is wasted reading this & blah blah blah blah blah until you wish your eyes would melt & you would die all packaged with a shitty link cos I don't really know what I'm talking about...

Nothing new there...

But wait!

Quote from: rabinoz on November 25, 2015, 03:39:39 PM
Of course they are just part of the "conspiracy"!

Aha - THERE it is!

GOOD little disinfo-thing!

GOOD little doggy!

Well done; have a scooby-snack, Fido...

Quote from: Mainframes on November 25, 2015, 03:57:21 PM
Now, eventually the gas particles will find their way out of the container after having rebounded off the walls of said container.

BULLSHIT!

Continuum mechanics says you are WRONG.

The concept of billiard-ball molecules all banging against each other has NO place in Fluid Mechanics, Okay?

So stop trying to sneak your shitty FALSE analogy past me yet a-bloody-gain, sock-puppet disinfo-freak.

Now GTFO.

KABISA!
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sokarul

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4150 on: November 25, 2015, 04:21:42 PM »
Continuum mechanics?

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luckyfred

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4151 on: November 25, 2015, 04:30:50 PM »
Quote from: Papa Legba on November 25, 2015, 04:12:54 PM


Quote from: Mainframes on November 25, 2015, 03:57:21 PM
Now, eventually the gas particles will find their way out of the container after having rebounded off the walls of said container.

BULLSHIT!

Continuum mechanics says you are WRONG.


OH god cindy, this is the best one yet AHAHAHAHAAHAHAHAHAHAH
do u wanna use continuum mechanics at extremely low pressure conditions? really?
come on, u're becoming like thebigone, not even trying trolling, just random shitposts.
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markjo

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4152 on: November 25, 2015, 04:41:26 PM »
Quote from: Papa Legba on November 25, 2015, 04:12:54 PM
Quote from: markjo on November 25, 2015, 03:23:09 PM
You can even just run hydrogen peroxide through a silver mesh like the jetpack guys do.

Jetpack Guys Innnnn Shpaaaaaayzhee!!!111!!1
Why not?  You do know that silver is a catalyst in hydrogen peroxide decomposition, don't you?
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Papa Legba

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4153 on: November 25, 2015, 05:00:30 PM »
Quote from: sokarul on November 25, 2015, 04:21:42 PM
Continuum mechanics?

LOL!!!

Quote from: luckyfred on November 25, 2015, 04:30:50 PM
do u wanna use continuum mechanics at extremely low pressure conditions?

Yes.

I'd like to use Free Expansion as well, but you Liars say it doesn't exist...

Still, if you & sock-arul both think continuum mechanics doesn't exist either, what can I do?

Seems you're systematically knocking off every single physical principle you find inconvenient...

Quote from: markjo on November 25, 2015, 04:41:26 PM
Why not?

Why?
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luckyfred

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4154 on: November 25, 2015, 05:07:13 PM »
Quote from: Papa Legba on November 25, 2015, 05:00:30 PM
Quote from: sokarul on November 25, 2015, 04:21:42 PM
Continuum mechanics?

LOL!!!

Quote from: luckyfred on November 25, 2015, 04:30:50 PM
do u wanna use continuum mechanics at extremely low pressure conditions?

Yes.

I'd like to use Free Expansion as well, but you Liars say it doesn't exist...

Still, if you & sock-arul both think continuum mechanics doesn't exist either, what can I do?

Seems you're systematically knocking off every single physical principle you find inconvenient...

Quote from: markjo on November 25, 2015, 04:41:26 PM
Why not?

Why?
For all forum's users continuum mechanics is an APPROXIMATION of reality which is valid if knudsen number is below one.
 in other words if u have a high density of molecules u can use continuum mechanics.

for cindy...
AHAHAHAHAHAAHAHAHAHAH
i thought this was your best one yet, but it seems u're gonna improve on it.
 i can wait to see what are u gonna come up with
« Last Edit: November 25, 2015, 05:15:57 PM by luckyfred »
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Papa Legba

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4155 on: November 25, 2015, 05:18:42 PM »
For any neutral wondering why phuckyfred is such a very angry little troll, here is the post where I finally woke the dumbass up to the fact he'd been answering to his sock-puppet name of tomfi for two whole pages:

Quote from: Papa Legba on November 23, 2015, 08:08:37 AM
Quote from: tomfi on November 23, 2015, 08:00:50 AM
am I a loser cause I've said something wrong?

No; it's a bit more obvious than that.

But at least you've admitted you ARE a Loser...

That's a start!

Now the healing process can begin.

It was hilarious...

And helps explain why he later said this:

Quote from: luckyfred/tomfi/selene/troll/etc. on November 25, 2015, 02:26:48 PM
either way i just keep harrasing u

So; a proven sock-puppeting troll who has promised to 'just keep harassing' me...

You decide if anything he says is worth listening to.

I've already decided this: LOL!!!

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luckyfred

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4156 on: November 25, 2015, 05:28:02 PM »
oh look, u're ignoring the fact that i proved u wrong on continuum mechanics.
what's that? troll tactics 101

come on cindy, u were on the right path, i was laughing like never before, why did u resort to old tactics?
it seems that as soon as u try to put some content in your post u end up saying BS.
ask your mommy for a hot choco, maybe a little sugar we'll give u the energy to troll better
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pRophet

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4157 on: November 25, 2015, 05:46:23 PM »
Quote from: Papa Legba on November 25, 2015, 05:18:42 PM
For any neutral wondering why phuckyfred is such a very angry little troll, here is the post where I finally woke the dumbass up to the fact he'd been answering to his sock-puppet name of tomfi for two whole pages:

Quote from: Papa Legba on November 23, 2015, 08:08:37 AM
Quote from: tomfi on November 23, 2015, 08:00:50 AM
am I a loser cause I've said something wrong?

No; it's a bit more obvious than that.

But at least you've admitted you ARE a Loser...

That's a start!

Now the healing process can begin.

It was hilarious...

And helps explain why he later said this:

Quote from: luckyfred/tomfi/selene/troll/etc. on November 25, 2015, 02:26:48 PM
either way i just keep harrasing u

So; a proven sock-puppeting troll who has promised to 'just keep harassing' me...

You decide if anything he says is worth listening to.

I've already decided this: LOL!!!

Calm down cindy
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Papa Legba

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4158 on: November 25, 2015, 05:52:39 PM »
Again; if neutrals are wondering wtf is going on here, the following post may give some idea:

Quote from: hoppy on November 25, 2015, 05:46:34 AM
Legba, you are doing a good job standing up against all these sock puppets. I would not have patience you are having with these guys . I can clearly see that you are correct in your position on rocket propulsion. Keep up the good work.

And remember this, too:

Quote from: luckyfred/tomfi/selene/troll/etc. on November 25, 2015, 02:26:48 PM
either way i just keep harrasing u

The little fella's certainly trying!

Now:

Quote from: Mainframes on November 25, 2015, 03:57:21 PM
Now, eventually the gas particles will find their way out of the container after having rebounded off the walls of said container.

Sadly, continuum mechanics suggest that this 'rebounding' would not occur.

Free expansion suggests that the gas would do no work as it left the container.

There is no resistance in a vacuum; thus the dictates of Newton's 3rd cannot be fulfilled.

Rocketry in a vacuum is a bust.

It is hopeless.

Still; if you enjoy the shrill shrieking of a frenzied foreigner; luckyfred's next few posts should be a treat...

Enjoy!

Oh, & pRophet; I suggest it is not I who needs to calm down...

Why would you turn up out of nowhere to imply such a thing?

Ooh... Right!

LOL!!!
« Last Edit: November 25, 2015, 05:57:04 PM by Papa Legba »
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luckyfred

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4159 on: November 25, 2015, 05:58:44 PM »
Quote from: Papa Legba on November 25, 2015, 05:52:39 PM

There is no resistance in a vacuum; thus the dictates of Newton's 3rd cannot be fulfilled.


good girl cindy, i knew u could do better.

gather folks, and listen up, mighty Papa's gonna tell us the tale of newton 3rd law and resistance

PS how many threads have u opened on this subject? ahahahahahahahah
« Last Edit: November 25, 2015, 06:00:47 PM by luckyfred »
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Papa Legba

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4160 on: November 25, 2015, 06:03:04 PM »
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luckyfred

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4161 on: November 25, 2015, 06:05:58 PM »
i'm really intrested in 3rd law and resistance, i'm looking forward to learning new physics.

ps come on, at least answer at "how many other threads have u opened?"
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Papa Legba

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4162 on: November 25, 2015, 06:08:04 PM »
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luckyfred

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4163 on: November 25, 2015, 06:12:52 PM »
u're not a good troll cindy.

just for reference if someone is really interested in rocket propulsion


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Papa Legba

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4164 on: November 25, 2015, 06:14:58 PM »
Quote from: luckyfred on November 25, 2015, 02:26:48 PM
either way i just keep harrasing u

Rockets work by creating a pressure differential between themselves & the medium through which they move.

When that medium is removed - as in the case of a vacuum - then rockets cannot work.

This is absolutely elemental stuff; yet you will never, ever grasp it...

I leave the reason for your continued denials & ignorance up to neutral readers to deduce for themselves.
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luckyfred

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4165 on: November 25, 2015, 06:16:33 PM »
Quote from: Papa Legba on November 25, 2015, 06:14:58 PM
Quote from: luckyfred on November 25, 2015, 02:26:48 PM
either way i just keep harrasing u

Rockets work by creating a pressure differential between themselves & the medium through which they move.

When that medium is removed - as in the case of a vacuum - then rockets cannot work.

This is absolutely elemental stuff; yet you will never, ever grasp it...

I leave the reason for your continued denials & ignorance up to neutral readers to deduce for themselves.
what happened to resistance and 3rd law? i was really curious
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Papa Legba

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4166 on: November 25, 2015, 06:18:17 PM »
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TheEngineer

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4167 on: November 25, 2015, 06:26:15 PM »
ATTENTION ALL POSTERS:

THIS TOPIC IS CONSTANTLY BEING REPORTED, THUS FILLING UP MY INBOX AND IS QUITE HONESTLY, ANNOYING ME TO NO END.  CLEAN IT UP OR I WILL BE FORCED TO LOCK THIS TOPIC.

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markjo

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4168 on: November 25, 2015, 10:19:27 PM »
Quote from: Papa Legba on November 25, 2015, 05:52:39 PM
Quote from: Mainframes on November 25, 2015, 03:57:21 PM
Now, eventually the gas particles will find their way out of the container after having rebounded off the walls of said container.

Sadly, continuum mechanics suggest that this 'rebounding' would not occur.
Citation please. 

Are you seriously suggesting that continuum mechanics says that a gas under pressure does not exert a force on its containing vessel?

Quote from: Papa Legba on November 25, 2015, 05:52:39 PM
Free expansion suggests that the gas would do no work as it left the container.
Free expansion does not preclude the gas from doing work before it leaves the container, or even as the gas is leaving the container.  Free expansion says that when the system reaches equilibrium, the total work done is zero.

Quote from: Papa Legba on November 25, 2015, 05:52:39 PM
There is no resistance in a vacuum; thus the dictates of Newton's 3rd cannot be fulfilled.
It can if you apply Newton's 3rd to the combustion chamber and the burning propellant within.

Quote from: Papa Legba on November 25, 2015, 05:52:39 PM
Rocketry in a vacuum is a bust.
You keep saying that as if you actually believe it.  I have a feeling that we both know better.

Quote from: Papa Legba on November 25, 2015, 05:52:39 PM
It is hopeless.
Yes, trying to get you to understand why you're wrong is looking hopeless.
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Heiwa

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Re: It's 2015 and you aren't even close to owning a Spaceship
« Reply #4169 on: November 25, 2015, 11:29:51 PM »
Quote from: markjo on November 25, 2015, 10:19:27 PM
Quote from: Papa Legba on November 25, 2015, 05:52:39 PM
There is no resistance in a vacuum; thus the dictates of Newton's 3rd cannot be fulfilled.

It can if you apply Newton's 3rd to the combustion chamber and the burning propellant within.

If vacuum is space, it is probably full of subatomic particles that affect the combustion chamber and the burning propellant within and outside = gravity, which pull the combustion chamber and the burning propellant within and outside in a certain direction. And after you run out of the propellant, only external gravity forces will affect your Spaceship that will sooner or later crash on, e.g. Earth or into the Sun or a Black Hole.
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