heres another take on the reactionless propulsion pipe idea.

a steam powered space ship engine...

you could actually boil water in a space ship using solar collectors then direct the steam through a nozzle.

and if you have a nuclear reactor on board that can allow for the production of steam you can travel further from he sun.

but it all boils down to , you dont need to throw something out of a space ship to make the spaceship move , you can throw something inside the ship.

like I said when this all started.
3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.