> I suspect must have interpreted this wrongly.  Is this saying
> that having the water going through a 180 degree change
> in direction before exiting provides more thrust than having
> a straight path from the pressure vessel to the exit?  I'd have
> though just the opposite as the change in direction is bound
> to reduce the flow over a straight pipe
>
> Regards
>
> Mike

The big tank at the end of the track is full of pressurised water.
When the valve is opened an 18" diameter jet of water shoots
out and hits a U-bottomed bucket (like the scoop on an earth-
mover or front-end loader) on the back of the carriage. The
"top" of the bucket is facing the water jet, the bottom is in the
carriage. The water goes in at the top edge of the top of the
bucket, follows the side, curls around the U-bottom and then
exits at the bottom edge of the bucket. Which is the plume
heading towards the top left of the picture

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