Category:Rudder

Original Rudder
The 4m boat had 1 rudder. When the boat would heel over too much, the rudder ended up not being in the water, making it difficult to control.

Solution
Currently there are 2 proposed solutions. We are aiming for having 2 rudders in place of the current design. If there is not enough space in the rudder hull compartment, then we would resort to 1 rudder that is longer than the current (2012) rudder.



To decrease the moment, we want to have the rudder shaft extend up higher to the deck of the hull, so to decrease the moment by having more fixed surfaces.

If this is to occur, we have to account for a way to attach the "sleeve" through the rudder shaft for the pin, to shaft linkage, to servo section of the rudder (further details will follow).

2 Rudders
Will make 3 rudders incase one breaks, and with 3/4 extra metal plates.

Specs:

Angled 11 degrees from vertical.

NACA 16

Rudder Post: 316 SS, approx 3.5ft for the 1" post (still need to accurately measure, height of the rudder + how high we want it within the hull), 2ft for the 1/2" post, each rudder to have one 1" post and one 1/2" post (with 3 rudders total). The 1/2" post is only for alignment of the foil shaped plates when welding (if it is said that this is not necessary for welding, then we will take this out). We are also ignoring the pins for now and will drill them later on.

Rudder Plates: 316 SS, 1/8" thickness. 7 plates in each rudder, making for a total of 25 plates (extras included)

Foam Plates/Spacers: 4" per section (2" thickness foam x 2 per section)

Rudder Span: 70cm -> make 2ft.

Rudder Chord: 20cm