VSP: Same Power, 9% More Bollard Pull
With the commissioning of the Norway's Bukser og Berging Voith Water Tractor Baut. the improved characteristics of the new Voith Schneider Propeller (VSP) blades were demonstrated. The bollard pull — as supervised by DNV — was improved by nine percent while using the same input power.
The VSP is designed to provide accurate, stepless and extremely swift thrust variations in accordance with XY coordinates. In order to improve the hydrodynamic characteristics of the VSP further, a new generation of blades has been developed. The basis for the successful development is the numeric simulation of the fluid dynamics (CFD = Computational Fluid Dynamics). The CFD method initially serves to optimize the shape of the propeller blade; it also provides the exact loads for the structural and mechanical optimization by using the Finite Element Method (FEM).
The new VSP blades for the propeller size 36R6/255- 2 represent an important step towards the further improvement of the hydromechanics of Voith Schneider Propellers.
For new propellers, the new profiles will be standard; any further improvements can be realized with immediate effect. Voith, founded in 1867. has a long history in the marine propulsion field. With 24,000 employees and annual sales of about $3 billion, it is one of the largest of Europe's family-owned companies.
Circle 1 on Reader Service Card Below: A CAD illustration of the new VSP size 36R6/255-2 with a propeller input power of 3380kW.
Top Right: Blade after machining.
Other stories from May 2004 issue
- Fincantieri Delivers Westerdam page: 10
- "World's Largest" Heavy Lift Ship Enters Service page: 10
- Damen Delivers Pair of Tugs page: 10
- Not Just Another Dam Ship page: 12
- Welsh Towing Company Growth Continues page: 14
- Gladding-Hearn Starts Construction of New I neat Vessel page: 15
- Despite 11% Increase, Hempel Disappoints page: 15
- Grimaldi-Naples Receives GM Award page: 16
- Schlueter Promoted to VP page: 17
- Misplacing the Place of Refuge page: 20
- Schottel Broadens Electric Propulsion Options page: 26
- CIMAC Congress Set for Kyoto page: 29
- Waterjets for a Difficult Design Task page: 30
- New Shaft Seal from Ocean Venture Seals page: 31
- Gas Turbines: Keeping Fresh With Innovation page: 32
- MAN B&W Diesel Debuts the New S65ME-C page: 33
- Thordon COMPAC Finds Success in FSV page: 33
- Wartsila to Power Australian FPSO page: 34
- VSP: Same Power, 9% More Bollard Pull page: 35
- The New MTU 2000 CR Marine Engines page: 36
- Converting and Repowering One Very Big Ship page: 38
- Power for a New Breed of RoPax page: 40
- ZF Helps to Harness Spirit of Ontario's Power page: 41
- Greece Poised for Posidonia 2004 page: 42
- Leif Hoegh Records Strong First Quarter page: 43
- BV Launches LNG CAP page: 43
- Steel, Ship Prices Soar as Tankers Stay Firm page: 44
- Ice Class & Large Ships Pose New Challenges page: 44
- Royal Caribbean Stays Current with C-MAP CM-93/3 ECs page: 46
- JRC Proposes Integrated Nautical Safety System page: 46
- C-Map's RTU and the Ending of the Paper Trail page: 47
- AutoChief C20 Reports Good Market Penetration page: 48
- Vision FT IBS page: 48
- Research Winches for R/V Maria S. Merian page: 52
- Konecranes Giving Port Efficiency a Lift page: 52
- Chinese Yard Logs Strong Month page: 55
- Fuel Oil Separation Takes Center Stage page: 56
- Security of Ports and Vessels: A New Approach page: 60