Message from @Lemonier
Discord ID: 501634526666293258
propellers are moving air around to create lift
yes
or propel a submarine in water
the usually pull the aircraft through the air
because it has a medium to push
they aren't going to work in a vacuum either
because there is no medium
a prollor on a ship pushes the water
exactly
yep
well, rockets use a different way to propel themselves
not significantly different enough to push itself in a vacuum
a propeller requires a medium to push in order to create lift
you need to be traveling by some other method, like light sails or something that works in that medium
you know that flies cannot fly in a vacuum
when you eject alot of stuff very quickly through a small area is creates thrust
someone put flies in a vacuum and tested it
it didnt fly
🍿
appearantly they can survive but they cannot fly without enough atmosphere
its a 3rd way to generate kinetic energy
rockets have some stabalizors
they aren't flapping wings though which would create lift
...
we can't survive in a vacuum too
mind if i do a quick run through on rockets and you tell me what you find wrong kevin?
go ahead
alright
we know how propellers work, by pushing air or another medium
but rockets use a different method to generate thrust
they do this by ejecting extremely hot pressurized gasses through a small opening
the reason it goes through the small opening is so it has a higher pressure inside the fuel tank
which in turn ejects the material extremely fast outward
now, newtons's 3rd law states any reaction has an equal and opposite reaction, meaning when the gasses are ejected backward, the rocket is ejected forward. once the gas leaves the nozzle its useless and serves no other purpose.
welcome to reality
air only slows rockets down because of air resistance, in a vacuum the gasses would eject faster and there would be no air resistance, only helping the rocket
any problems you've thought of?
yes, rockets need something to push off of
its a propellant