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ATMA 2010
Tous droits de reproduction réservés – ATMA 2010
LATEST DEVELOPMENTS ON MAN DIESEL ALPHA PROPELLERS
M. MORTEN, G. RASCH
MAN Diesel - Danemark
SOMMAIRE
Cette conférence présente la gamme de production de MAN Diesel au niveau des ensembles de propulsion tels que réducteurs, lignes d’arbres, hélices. Une présentation rapide de la technologie des hélices est faite : hélices à pales orientables, pales, tuyères. Ensuite cette présentation se recentre sur les outils d’optimisation du rendement propulsif.
Une revue des différents paramètres influents est faite avec des exemples à la fois théoriques et pratiques sur
• Le Bulbe Costa
• Le gouvernail asymétrique
• L’hélice Kappel
• L’hélice avec tuyère
• Les hélices contra-rotatives
ABSTRACT This paper introduces the range of production of the MAN Diesel propulsion systems, including gear boxes , shaftings and propellers. A quick introduction of the propeller technology is done : CP propellers , blades , nozzles. Then the presentation focuses on improvement tools for better efficiency of the propulsion.
A review of various influencing parameters is done and various examples are shown both on the theoretical as well as on real results for instance on
• Costa Bulb
• Asymmetric rudder
• Kappel Propeller
• Propeller with nozzle
• Contra-rotating propellers
ATMA 2010 108th SessionATMA 2010, 108th Session
MAN DieselPropulsion SystemsPropulsion Systems
Morten G. RaschSales Manager
2009/11/18© MAN Diesel 2009/11/18© MAN Diesel
Sa es a agePropellers & Aft-ship Systems
IntroductionIntroduction
MAN Diesel – Propeller Department
Product Port FolioProduct Port Folio
Propeller Design
Effi i i i d iEfficiency improving devices
Nozzle design
2009/11/18© MAN Diesel <2
MAN Diesel gears and CPP’s in briefMAN Diesel gears and CPP s in brief
First CP propeller patent received in 1902i.e. second oldest brand on the market
First complete propulsion plant delivered in 1902
In 1969 first reduction gears are developed
Today approx 1800 gears and 7000 propeller haveToday approx. 1800 gears and 7000 propeller have been delivered or are on order
2009/11/18© MAN Diesel <3
Recent Remarkable OrdersRecent Remarkable Orders
2 x 2xVBS1680 Jan de Nul Dredger Worlds largest hopper suction dredger3 x 2xVBS1560 Ro-Pax for Stena Worlds largest Ro-Pax – 6200 LM 3 S 560 o a o Ste a o ds a gest o a 6 004 x VBS1800 6900 PCTC for Höegh First large car carrier with CPP79 x VBS1380 1100 TEU Feeders Most famous feeder series. 79 CPP sold10 x 2xVBS1080 AHTS vsls for Maersk MD’s (and Aker’s) largest offshore order( ) g
2009/11/18© MAN Diesel
Propulsion productsPropulsion products
CP P ll f t d f t k i4 hp - year 1904
CP Propellers for two and four-stroke enginesPropeller diameters up to 9,2 m (960-30.000 kW)
Single in/ single out reduction gearboxesF i i 21/31 t 32/44 iFour sizes covering 21/31 to 32/44 engines
(Standard power range 1.200 – 4.500 kW)
Remote control system AT2000For all engine types
2009/11/18© MAN Diesel
Extended CP Propeller RangeVBS Mk 3VBS Mk. 3
Coverage:
• Two-stroke: Up to 80ME/MC
• Four stroke: Complete program
2009/11/18© MAN Diesel
VBS Working principleVBS Working principle
2009/11/18© MAN Diesel
MAN Diesel VBS Propeller & AMG GearboxVBS Propeller & AMG Gearbox
VBS servo oil system integrated in the MAN DieselVBS servo oil system integrated in the MAN Diesel gearbox
2009/11/18© MAN Diesel
MAN Diesel Four stroke Propulsion PackageFour-stroke Propulsion Package
2009/11/18© MAN Diesel
CPP Hydraulic Power UnitCPP Hydraulic Power Unit
2009/11/18© MAN Diesel 2007/01/19
Hydrodynamic Propeller Design AspectsDesign Aspects
OwnerRequirementsRequirements
HullForm
Torsional Vibration Calculations
Off-DesignConditions
TankTest
Design
Engine/Gearbox Shafting
ClassRequirements
2009/11/18© MAN Diesel
Noise & vibration Requirements
New COPS ToolDeveloped by MAN DieselDeveloped by MAN Diesel
Better optimization of global parameters
Integration of several programs into one user interface
Inclusion of statistical dataInclusion of statistical data
Gearbox selection/calculation
Drawing / mass elastic dataDrawing / mass elastic data generation
and more..
2009/11/18© MAN Diesel <
The optimum designThe optimum design
The Balanced DesignThe Balanced Design
Fuel Consumption Vibration/Noise/Comfort
2009/11/18© MAN Diesel
High Skew Propeller Blade DesignHigh Skew Propeller Blade Design
2009/11/18© MAN Diesel
High Skew Cavitation PatternHigh Skew Cavitation Pattern
2009/11/18© MAN Diesel
CP Propeller BladesComes in different size and shape- Comes in different size and shape
2009/11/18© MAN Diesel
Cavitation Tunnel TestingCavitation Tunnel Testing
2009/11/18© MAN Diesel
Navy Inspection VesselIce class 1AIce class 1A
2009/11/18© MAN Diesel
Efficiency improving devicesEfficiency improving devices
Type EfficiencyCosta Bulb 2 3%Costa Bulb 2-3%
Asymmetric Rudder 2-4%
Pre swirl fins 3 5%Pre-swirl fins 3-5%
Tip loaded propeller (Kappel) 3-5%
Propeller with nozzle 14%Propeller with nozzle 14%
Contra rotating propeller 10-15%
2009/11/18© MAN Diesel
Costa Bulb and Twisted RudderEfficiency improvement up to 4%Efficiency improvement up to 4%
Costa Bulb
2009/11/18© MAN Diesel
Twisted rudder
Kappel Tip Fin PropellersKappel Tip Fin Propellers
Kappel Tip Fin Propeller3-5 % efficiency gain
N Pl bl d h
2009/11/18© MAN Diesel < 21 >
Non Planer blade shapeComparable to winglets
CP Propeller with Kappel Blade DesignCP Propeller with Kappel Blade Design
M/F K i F d ikM/F Kronprins Frederik
M/F URD
2009/11/18© MAN Diesel
New AHT Nozzle DesignsCFD Optimised for Bollard PullCFD Optimised for Bollard Pull
2009/11/18© MAN Diesel
Computational Fluid DynamicsStreamlines – Bollard Pull ConditionStreamlines – Bollard Pull Condition
2009/11/18© MAN Diesel <
New AHT Nozzle DesignsNew AHT Nozzle Designs
6-8% Increase in Bollard PullWageningen 19A New MAN Diesel AHT Design
6 8% Increase in Bollard Pull
AHT nozzles have double curvature on both in and outside
2009/11/18© MAN Diesel
both in and outside
AHT Nozzles (Alpha High Trust)AHT Nozzles (Alpha High Trust)
Bollard Pull Astern
20 0
25,0
30,0
BP
[%]
A n
ozzl
e
Wageningen 19A Versus AHTNot just a nozzle – but a concept solution
5,0
10,0
15,0
20,0
mpr
ovem
ent i
n om
pare
dto
19A
The AHT nozzle is customized to the specific project
0,00 2000 4000 6000 8000 10000 12000 14000 16000
Im Co
Power Pd [kW]
Increased astern thrust – for DP and station keeping
Verified in model testingVerified in model testing
Proven in full scale
2009/11/18© MAN Diesel
Proven in full scale
Comparison of nozzle profilesComparison of nozzle profiles
Traditional all- Nozzle designed Nozzle designedTraditional allround nozzle
Nozzle designed for bollard pull
Nozzle designed for free sailing
2009/11/18© MAN Diesel
Tool for evaluation speed nozzlesTool for evaluation speed nozzles
60%
70%
30%
40%
50%
60%
r Effi
cien
cy
10%
20%
30%
Prop
elle
Open Propeller Nozzle Propeller0%
0 2 4 6 8 10Thrust Loading Coefficient
Open Propeller Nozzle Propeller
2009/11/18© MAN Diesel <
Thank o for o r attentionThank you for your attention
2009/11/18© MAN Diesel