"Jay Windley" wrote in message ...

snipped to save bandwidth

So after it has driven the turbine, what to do with it? In other engines
it's simply dumped overboard from an auxiliary exhaust port. It's
relatively non-propulsive.

Thanks for a great reply, one follow-one: Part of your reply spoke of
dumping exhaust overboard. In photos of some launch vehicles, you see
a rather non-propulsive flame to one side of the engine exhaust,
especially the older Atlas vehicles . . . is that the same exhaust?

Thanks

John Pelchat