Computer Tuned Propellers • Marine Hardware
Also called Suction Side, is the forward side of the blade (facing bow).
Also called pressure side, is the aft side of the blade (facing stern).
Where blade attaches to hub.
Maximum reach of the blade from the center of the hub.
Hole drilled in the center of the hub to accommodate the shaft.
A small bend in the trailing edge of a propeller blade.
Imaginary circle defined by the blade tips as the Propeller rotates.
Solid cylinder at the center of the propeller bored to accommodate the shaft.
Rectangular slot cut into the center of the hub which is used to secure the propeller to the shaft.
When viewing propeller from astern this edge is furthest away.
Distance from the axis of rotation to the blade tip.
The fore or aft slant of a blade with respect to a line perpendicular to the propeller axis of rotation.
Viewing from the stern Right Hand propellers rotate clockwise, and Left Hand propellers rotate counter-clockwise. Many propellers marked RH or LH on the hub.
The transverse sweeping of a blade such that viewing the blade from fore or aft shows an asymmetrical shape.
When viewing propeller from astern this edge is closest.
Amount of pitch on a blade in a specified segment of a radius.
Blade slants toward bow.
The distance (usually expressed in inches) a propeller would move in one revolution in a solid medium with no slippage.
Blade slants toward stern.
Propeller - Constant Pitch
Propeller blades have the same value of pitch at each cylindrical section from blade root to tip.
Propeller - Controllable Pitch
Propeller blades mount separately on the hub, each on one axis of rotation, allowing a change of pitch in the blades.
Propeller - Fixed Pitch
A propeller on which the blades are permanently mounted to the hub not allowing a change in propeller pitch without mechanical intervention.
Propeller - Progressive Pitch
Propeller blades have sections designed with varying values of local pitch on the Blade Face.
Propeller - Variable Pitch
Propeller blades designed to have different values of pitch at different radius sections from blade root to blade tip.