Question on gas turbine powered ships and blade count

Bubblehead Nuke · 05-08-06, 09:09 PM

As I understand it, on gas turbine powered ships the screw is turning at a constant speed until you max the pitch out. In other words, at you move the throttle quadrant forward, you are only increasing blade pitch until you max the pitch out THEN you actually start to increase engine RPM's. Thus the bladecount is the same at ALL STOP up to a certain ship speed. At that speed you stop increasing blade pitch and actually start to increase engine RPM's. In essence you can not tell if the target guy is just sitting there or moving at ## knots.

Can any of you skimmer types on here confirm this?

05-08-06, 09:09 PM	#1
Bubblehead Nuke XO Join Date: Feb 2006 Posts: 435 Downloads: 5 Uploads: 0	Question on gas turbine powered ships and blade count As I understand it, on gas turbine powered ships the screw is turning at a constant speed until you max the pitch out. In other words, at you move the throttle quadrant forward, you are only increasing blade pitch until you max the pitch out THEN you actually start to increase engine RPM's. Thus the bladecount is the same at ALL STOP up to a certain ship speed. At that speed you stop increasing blade pitch and actually start to increase engine RPM's. In essence you can not tell if the target guy is just sitting there or moving at ## knots. Can any of you skimmer types on here confirm this?