Man Alpha FP Propellers
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This Is a Headline MAN Alpha This is a subheadline High-efficient Fixed Pitch Propellers

Lowest Total Cost of Ownership Increased Efficiency Larger Fuel Savings Higher Reliability A wide range of different ship types are covered by the MAN Alpha FP Propeller range – customised to match their individual operational requirements and optimising points. The FPP generation consists of a complete range – tailormade for the handling of engine outputs from 4,000 and up to 40,000 kW

MAN Alpha Fixed Pitch Propellers Complete with shafting and stern tube solutions MAN Diesel & Turbo is proud to present a Fixed Pitch Propeller (FPP) generation, which has been developed on the basis of the industry's state-of-the-art design and optimisation tools combined with the vast experience accumulated from more than 7,000 propellers. A long tradition and a proud propeller heritage date back to the first Alpha design, which was produced in 1902 and patented in 1903. Flexibility for covering efficiently any propulsion power requirement in the 4-40 MW range is our overall target. The...

Increased Propulsive Efficiency Hydrodynamic competences For maintaining and developing MAN Diesel & Turbo's position in the propulsion forefront, many resources are invested and the latest advanced design tools including e.g. CFD (Computational Fluid Dynamics), FEM (Finite Element Methods) and Topology Optimisation are deployed. To verify the calculations, MAN Diesel & Turbo cooperates with the world's leading test tanks and research institutes. Hydrodynamic design characteristics Operational advantages Maximised efficiency with due respect to controlled cavitation, pressure impulses,...

Hydrodynamic integration The perfectioned layout and hydrodynamic propeller integration will be optimised with the ships hull and any 'flow-guiding' devices placed before the propeller, e.g. Mewis Ducts, pre-swirl fins and vortex-generators. After the propeller, the optimisation will consider integrated rudder bulbs, high-efficiency rudders, post-swirl fins or similar.

Fuel Savings and Low Noise Innovative Kappel propeller blade designs Optimisation: More MAN Alpha Fixed Pitch Propeller design solutions are ready – all the way from propellers based on the very advanced and unique Kappel tip fin design to conventional blade designs. Nature of optimisation parameters Lower speed and larger propeller diameter of the Kappel propeller compared to conventional Larger diameter and few propeller blades Lower pressure impulses and smaller clearance to Kappel and G-type engine example the ship's hull – offer the deployment of a larger longer stroke and lower engine...

Scale model 1:28 – of a 6.4 metre MAN Alpha Fixed Pitch Propeller with Kappel blades output, specified MCR : 10 000 kW Average engine load: 80% Operating hours per year: 6 000 Fuel price (USD/ton): 650 Fuel savings from Kappel propeller efficiency improvement examples of 3, 4 and 5%

Reliable Propeller Design Mechanical robustness and safe handling Less is more: The monoblock hub design is designed and simplified with due consideration to the propeller/shaft torque, material properties and weight. The MAN Alpha Propeller reliability and durability have always been very high, and the latest FP Propeller design follows that philosophy. Mechanical design characteristics Robust approach – with ample design margins As standard, the propeller material is specified as G-CuAl10Ni. Other material available upon request the complete system's torsional response Compact hub/blade...

Installation and handling features for yards ■ Hydraulic press-fit assembly of propeller and shaft ■ Simple and safe handling is ensured during assem- bling at the building yard - and later at dismantling and assembling upon planned class dockings. Operational advantages ■ High reliability with few components ■ Reduced bearing loads due to low weight ■ Small hub dimensions resulting in high efficiency ■ Pitch distribution balanced for astern efficiency ■ Service and inspection friendliness. Propellers with coated shafts for water-lubricated stern tubes prepared for a twin screw Ropax vessel

Avoid Technical and Economical Risk The VibraSafe concept completes propulsion solutions The nature of vibrations to be dealt with in complete propulsion system solutions The vibration aspects inherent to complex mechanical systems like a complete propulsion plant can lead to potential problems ranging from annoyance during operation up to disastrous failures if not properly dealt with during the design phase. None of these potential problems can be solved by any single supplier of the individual components, but must be treated in holistic manner in the early project phase – before...

VibraSafe – modification of key parameters The VibraSafe concept ensures, that the propulsion system structural vibrations are minimised by optimising the complete plant by various steps including two-stroke engine uneven firing sequences, propeller blade number or phasing of propeller and firing order. Torsional vibrations An MAN Alpha FPP shafting and propeller system will be optimised, adjusted and documented to ensure safe operation. The optimisation will be done by prop- Torsional vibrations er modifications to the main engine tuning or shaft line dimensions – taking the total cost...

Plant Competence and Added Customer Value Perfect tools and know-how for integrated solutions The FP Propeller range offers excellent coverage Prepared for biodegradable stern tube lubrication With propeller diameters from four to twelve metres, The stern tube lube oil systems are adapted to both the programme handles engine outputs in the range biodegradable oils and ordinary mineral oils. Switch- 4,000-40,000 kW. The propeller solutions are avail- ing from one type to the other is possible without any able for diesel-mechanical two-stroke direct coupled requirements for component changes....

Tailored propeller systems and plant solutions: Efficient and compact propulsion packages with optimised installation dimensions are offered with consideration to e.g. ships' hull shape, engine room, shafting and stern tube equipment. Optionals and special installation requirements__ ■ Rudder design interaction ■ Integration to rudder bulbs ■ Wake equalising ducts ■ Customised bollard pull and speed nozzles ■ Guide vanes for wake field improvements ■ Customised stern tube solutions - water or bio oil ■ Special shaft brake and locking devices ■ PTO solutions from main engine or tunnel gear ■...