Home |
Search |
Today's Posts |
#19
|
|||
|
|||
push vs pull vis a vis rudders
Wayne.B wrote in message ... On 29 Mar 2004 03:27:38 GMT, (JAXAshby) wrote: It exerts a force against the rudder, why is that? Please explain in detail, as the physicists disagree with you. If you are right, you stand to make a fortune on the Nobel prize money alone. ================================================== == If flow deflection takes place (rudder at angle to flow), a force is exerted. Old news to everyone, Nobel prize not likely. Wayne, I can imagine a description of flow over the rudder which would meet Jax's flat (and rather unhelpful) statements, and also square with the obvious deflection that must occur just before entering the prop. Whether it's realistic or not is another matter. Perhaps water approaches the propeller via the deflected rudder through an Ess bend. ie, water approaches a point about a third of the way from the tip of the deflected rudder (lets call it the stagnation point). From one side of this point, water idles off at a steep angle to round the rudder tip, doing a hairpin bend to run back to the prop. From the other side the water moves quickly along the rudder surface to the prop. Well, it's a thought. I'm off to play with bits of card and wire to repeat Derek Rowells experiment, so perhaps I should add a few burning fag ends to the picture? JimB |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Angle of prop shaft - theoretical question. | General | |||
Which way do I turn the torque fin to compensate for the pull? | General | |||
Where to find ramp stories? | General | |||
Push starting your boat | Cruising | |||
Yamaha 100hp pull start | General |