Mxsmanic , IFR sensations, and some other stuff

writes:

What about rocket propulsion in a vacuum? How does that work?

Simple action and reaction.

On May 22, 1:08 pm, Mxsmanic wrote:
writes:
What about rocket propulsion in a vacuum? How does that work?

Simple action and reaction.

Mmmm...but your action has nothing to react against, there's nothing
to push down on like you said with downwash producing lift for an
airplane wing.

On Fri, 23 May 2008 12:59:08 -0700 (PDT), wrote:

On May 22, 1:08 pm, Mxsmanic wrote:
writes:
What about rocket propulsion in a vacuum? How does that work?

Simple action and reaction.

Mmmm...but your action has nothing to react against, there's nothing
to push down on like you said with downwash producing lift for an
airplane wing.

huh??? the push is against the inside top of the rocket.
the hole at the bottom where all manner of stuff rushes out is in
reality the part where the push is missing. ...thats for a gunpowder
rocket.

for a nasa fuel rocket the push is against the conical part of the
rocket motor because of the way the pressure is generated.

....its not rocket science you know!

Stealth Pilot