Re: Konstantin Tsiolokvsky was wrong?!


"Greg Neill" <gneillREM@xxxxxxxxxxxxxxxxxx> wrote in message
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"Greg Neill" <gneillREM@xxxxxxxxxxxxxxxxxx> wrote in message
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"Greg Neill" <gneillREM@xxxxxxxxxxxxxxxxxx> wrote in message
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It can never be relatively constant,

Why? If the fuel is fed at a constant rate and he
burn continues at a constant rate, and the pressure in
the combustion chamber is constant,

Bingo!
There is your problem,
A pressure chamber can not remain constant,
when it is not closed.
Again you seem to not even know basics
about an open or closed "system".

Hey James, when you're driving your car down the
highway (assuming that you have a car), how do
maintain a constant speed?

I hit the cruise control,
and sadly, my fuel does not stay constant

No, it wouldn't if there are hills and variable
winds. Fortunately we don't have that problem
with the empty space of our gedanken experiment.

You still burn fuel, and that is not constant
so the mass is changing so even with a constant
fuel burn, you will not have a constant speed.


In the discussion, e is the velocity of the exhaust
gas as it leaves the rocket, as measured from the
point of view of the rocket. In other words, a
constant thrust rocket is assumed.

Oh, here we go with the frame bull***.
LOL
assuminga constant thrust of the rocket
is a joke.
The mass will lessen so there can not be a constant
velocity of the rocket, and the pressure will decrease
as fuel burns so there can not be a constant fuel departure
speed.
You apparently love to worship constants, that can't be
constant.
LOL

Are you now saying it is about a constant speed
of the rocket?

No, it is the speed of the exhaust from the rocket.

The speed of the exhaust can not be "constant" without a
constant pressure for such fuel.
fuel does not act that way in an open full birn situation
like most rockets.
Sheesh


In the present discussion, e is being used as the
symbol standing for the exhaust velocity with
respect to the rocket.

And it can not be constant
and especially not at the e I saw used
so far....
You are too foolish to realize such.
It seems in your broken model
the e can be tiny and have rockets doing
amazing speeds from a drop of water being pushed
out.
LOL


That's what differential equations are for.
The variable masses and velocities aren't a problem,
as they are calculated in differential form. The
only assumed constant is the exhaust velocity,
which is a good assumption for a reasonably
designed rocket (contant thrust under dynamic
control).

Greg, you are freakin moron,
There is no constant exhaust velocity, in fact
we did not even know the exhaust velocity at all,
How did you come up with it being constant
and what was your number for it?


Please explain precicely why the exhaust speed could
not be made constant with respect to the rocket.
Everything else in the equation are variables and
are handled as a differential equation, so they're
not a problem.

Show me how a 2 meters per second push speed
can push something faster than 2 meters per second.
(and remember this is a pushing speed , not a collision speed)

<snipped insultation physics that seems to be Gregs only physics>


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