Don't shoot the messenger.
Interessant voor space travel fans en non-space travel fans misschien,geposte door Boethius,die lijkt 'n beetje verstaan te hebben.Ik ben open voor 't idee dat 'ie heeft 't helemaal verkeerd.
http://cluesforum.info/viewtopic.php?f=23&t=1632&start=495" The reason space travel is not possible is because the systems we claim
to use to propel a rocket through space operate on gas pressure and
there is no gas pressure in space.
Gas pressure requires molecules to be in contact with each other,
bouncing off each other, causing millions of collisions per second,
etc... If you release gas into the vacuum of space, the first molecule
that pops out will shoot off into the distance at a constant speed, so
will the one behind that, never catching up with the first one. The
third, fourth, etc... all fly off into the distance trying to fill the
vacuum by finding their empty corner. So no matter how much gas you
produce none of it will ever change the pressure under a space ship.
None of it will ever push a spaceship. To push a spaceship there must be
some locally high pressure under it, which is impossible since the
pressure in space is 0 everywhere.
Back the the Nozzle and the Massflow equation F=MA on earthThink about a fire hose shooting water. A force comes directly back
against the column of water shooting out. Why? Because the first drop of
water has to pas through air, which is dense, causing many collisions,
slowing down the drop of water. The second drop, directly behind the
first, will not be slowed down by the air so it will collide with the
first drop, the third drop hits the second drop and so on, the fast
water coming through the hose pushing through the slower water outside
causes Newton's 3rd Law to push back on the column of water. This is why
you need people holding the hose to add an unbalanced force otherwise
the hose would not be able to push water through that column anymore,
the water column would be diverted and the hose would flop around. It is
obvious that one drop of water does not push back on the hose, you need
a fast moving column.
The nozzle and the Massflow equation in spaceSince the molecules leaving the combustion chamber and entering the
vacuum never slow down, never collide with any outside objects, nor with
each other, their force is always moving forward, away from the ship.
There is no way for that force to be returned to the ship. There is no
way for the force of the moving molecules to be extracted and used for
propulsion. Their force is carried off into the far corners of space.
This is also known as Joule Expansion. Remember that as soon as the
nozzle is opened, the combustion chamber becomes part of the vacuum of
space and is subject to its laws. A closed chamber is under pressure but
not an open one.
NASA is lying at the molecular level
But that's OK because most people don't usually look there. The awesome,
spectacular and heroic nature of space exploration is enough to cloud
the most logical minds. Most respectable engineering schools won't touch
space flight and those who do have tiny departments. If it was really a
multi-billion dollar government funded operation, every school in
America would have their hands out for government grants like the do
with Engineering, Computer Science and Biology. But why train thousands
of the best minds of a generation in a field that doesn't exist?"
In the new 'reality' we will be living in,nothing will be real and everything will be true-David A.McGowan
Why do some people not credit the origin of the quotes they use under their posts?- Tingo