/sci/ - Science & Math

in your dreams jeff

>>11689162
>space flight
Sorry OP, rockets don't work in space. When you use logic, reason, and actual real science, you realize rockets only work (definition: propel themselves forward) inside an atmosphere. This means they don't work in space. Sorry to shatter any illusions you may've had.

The plain truth is they don't and can't work in a real vacuum.

So will a rocket which "works in space" (propels the craft forward) ever be invented? No. No such technology can ever exist. Any claims of such tech existing is a fraud and a lie. You want to believe in a fraud and a lie?

>inb4 you parrot "newtons 3rd law!" like an NPC without any thought involved
That law isn't in dispute here. Quoting it to "prove" rockets "work in space" shows you don't grasp the fundamental problem here. The 3rd law is 100% correct. When asteroids floating in the vacuum of space crashes into each other, the 3rd law applies. Likewise, the law applies to objects interacting on the ground on Earth, underwater, and in the sky. The 3rd law is real, but it doesn't "do" anything for a rocket engine fired in a perfect vacuum.

You see, the atmosphere gets thinner at higher elevation until it disappears completely (out in space). That's the issue is here! And you can't get around that issue. Parroting "newtons's 3rd law!" or throwing math equations around, doesn't magically make the issue go away. That's just you avoiding to deal with reality. Man up and stop avoiding reality.

If you're currently under the "rockets work in space! xd!" spell they cast on you through the entertainment industry and educational system (the indoctrination system), and you want to break free from that spell and shatter the illusion - then see these two educational videos (they play inside your browser):

First vid: https://files.catbox.moe/dl9ldw.webm
Second (also important): https://files.catbox.moe/so2rrt.mp4

Once you know that stuff, then you know beyond any doubt rocket technology will never be viable outside of Earth.

>>11689170
And OP, if you have a short attention span and you therefore have difficulty following a scientific presentation in video format, here is an illustration which can assist you in understanding that rockets indeed do not work in space. You're welcome. You're now ready to take your first steps towards embracing the real world.

You're all faggots

>>11689170
>>11689176
take your meds schizo
3rd law works when things collide as you say
it also works when things push apart
>hurr durr atmosphere
the FUCK does atmosphere have to do with anything?
unless you have infinite mass you're not gonna stand still when you throw something heavy away

nigga I just got a B in aerospace fluids II where we modeled supersonic flow; you telling me that this whole time I shouldn’t have bothered trying to maximize P0/P1? That you in fact need a big, thiqq pressure on the other side of your converging-diverging nozzle? That’s wack, stagnation pressure is like the whole point yo

>>11689176
>>11689170
based schizo

>>11689162

You absolute motherfucker for one moment I believed it actually exploded (again)

>>11689197
>the FUCK does atmosphere have to do with anything?
Exactly everything.
A rocket engine works because its exhaust gases collide with the atmosphere of Earth, which results in the craft moving forward. In the vacuum of space, the exhaust gases from the rocket are merely absorbed into the surrounding vaccuum and nothing happens.

shit thread, shut the fuck up
stop responding to copy pasta

>>11689162
Petition to use a different thread because OP pic is gay and he forgot to backlink.

>>11689247
use sage, dumbass

>>11689170
>>11689176
Probably bait but rockets work because they throw stuff out their back end at a high speed. Throwing stuff out one way pushes the rocket in the opposite direction. That's also why rockets have limited fuel, because they have to carry all the stuff they throw out their back with them in order to go anywhere.

You don't need an atmosphere for this to work its like 5th grade knowledge. IF two people were hugging in a vacuum and one pushed off the other, they'd fly away from each other. Rockets work in the same way.

>>11689162
Fuck you OP you scared me

>>11689249
Yes, sorry. I swear I‘m usually on top of that.

>>11689247
he didn't forget, he's proud of it. OP is a faggot.

>>11689176
>disproving Newtonian physics using ms paint

I'd make a real thread but I need to go to work

Here you go, faggots, the REAL thread.
>>11689261

>>11689264
>disproving Newtonian physics
Nope, try again. Newtonian physics proves rockets don't work in space.

>>11689197
No atmospheric pressure, zero atmospheric density = no thrust. It truly is that simple. You need to work on overcoming your cognitive dissonance.

These videos, in addition to the ones already posted, may help you understand:

https://files.catbox.moe/7e3whr.mp4

https://files.catbox.moe/vquxds.mp4

>>11689170
>>11689176
Based: checked
Redpilled: checked

>>11689283
Force is produced as a result of pressure acting onto the craft in opposite direction of the exhaust.

If your logic was valid jet planes would produce greater thrust at lower altitudes, which they don't

>>11689331
Just ignore him. He's been doing that act for months.