Originally Posted by
rcsa
One of those PPrune posts that demands a 'like' button. Along with a 'Thank you' button and a 'Fascinating' button, tbh,
Agreed, When I joined up in 76 we were the last propulsion course to cover piston engines on it, we had a myriad of cutaways of sleeve valve engines etc that could be turned over, fascinating to watch them in action.