Controllable Pitch Propellers

Rolls-Royce controllable pitch propellers (CPP) are suitable for naval and commercial vessels where flexibility in power control is important. They are available for powers from 500kW with no upper limit.

A total of 45-hub designs are available with 4 and 5 blade options, enabling customers to select the optimum size for the application.

Standard Kamewa-A hubs are ideal for speeds up to 30 knots, for higher speeds the H hub is available.

The A-hub has an improved power to weight ratio of 20 per cent over the former XF5 hub and has a new shape developed with the latest CFD tools to reduce drag and improve propulsive performance.

Blade foot bearing surfaces have also been increased to provide even greater strength and wear-resistance. CP propellers are available in nickel-aluminium-bronze or stainless steel and are optimised for all types of installation, from no ice to highest ice class, throughout the speed range.

Three oil distribution pitch control options are available – gearbox, shaft mounted or integral.

The optimum blade / hub combination for the vessel is normally calculated and the design tailored to meet individual customer requirements to standards that include Comfort class 1.

Features

• Compact rugged design with reduced weight and outstanding hydrodynamic efficiency
• Normal pitch control with full blade feathering option
• Choice of three oil distribution systems
• Load sensing hydraulics give low noise and vibration with low energy consumption
• 45 hub sizes ensures optimum size selection
• Blades and blade seals can be changed underwater
• Open water, nozzle and ice-class options

The Kamewa A-hub meets US Navy standards including Grade-A shock MIL-S or 901D.

Read more about Naval CP propellers and US Navy Grade-A shock MILL-S or 901D