Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Ice propeller interaction forces
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Ice propeller interaction forces
Author: Arno J. Keinonen
Publisher:
ISBN:
Category : Ice navigation
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Ice navigation
Languages : en
Pages :
Book Description
Ice Propeller Interaction Forces
Author: A. J. Keinonen
Publisher:
ISBN:
Category : Ice navigation
Languages : en
Pages :
Book Description
Ice loading on open vs. ducted propellers has been discussed for several years, although there is a lack of facts to support a clear comparison of the systems. This report systematically evaluated the influence of ice thickness, ice strength, ice block size, amount of ice fed to the propeller, propeller revolutions, propeller pitch and vessel speed on the ice loading of propulsion systems by the use of model test series in an ice model basin. Influences were established for basic hydrodynamic load with no ice, ice-induced hydrodynamic load and direct ice contact load. Model test results were correlated with full-scale data. Ice load formulas are given for a range of propeller ice condition combinations.
Publisher:
ISBN:
Category : Ice navigation
Languages : en
Pages :
Book Description
Ice loading on open vs. ducted propellers has been discussed for several years, although there is a lack of facts to support a clear comparison of the systems. This report systematically evaluated the influence of ice thickness, ice strength, ice block size, amount of ice fed to the propeller, propeller revolutions, propeller pitch and vessel speed on the ice loading of propulsion systems by the use of model test series in an ice model basin. Influences were established for basic hydrodynamic load with no ice, ice-induced hydrodynamic load and direct ice contact load. Model test results were correlated with full-scale data. Ice load formulas are given for a range of propeller ice condition combinations.
Development of a Procedure for Predicting Propeller-ice Interaction Forces
Author: M. W. Chernuka
Publisher: Transportation Development Centre, Transport Canada
ISBN:
Category : Ice breaking operations
Languages : en
Pages : 178
Book Description
Publisher: Transportation Development Centre, Transport Canada
ISBN:
Category : Ice breaking operations
Languages : en
Pages : 178
Book Description
Propeller/ice Interaction
Author: M. E. Norwood
Publisher:
ISBN:
Category : Ice mechanics
Languages : en
Pages : 49
Book Description
Publisher:
ISBN:
Category : Ice mechanics
Languages : en
Pages : 49
Book Description
TP 10401E Ice Propeller Interaction Forces
Author: Arno J. Keinonen
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Measurement of Ice/propeller Interaction Parameters
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 271
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 271
Book Description
Proposal for Propeller/ice Interaction Finite Element Stress Analysis
Author: Martec Limited
Publisher:
ISBN:
Category : Marine engineering
Languages : en
Pages :
Book Description
"The objective of this project is to contribute to the effective design and regulation of propellers in Arctic service. The work will involve the use of special purpose propeller analysis programs developed by Martec Limited over the past seven years to determine the stress distribution and stress levels in propeller blades and the formulation of methods for predicting propeller/ice interaction forces. In this project a typical modern icebreaker propeller will be modelled with a nominal loading of uniformly distributed pressure over a depth of the blade immersed in a block of ice, and the stress distribution pattern and critical points where failure is likely to originate will be determined. Similar finite elements modelling will be carried out to assess sensitivity to a number of likely parametric variations, including: a) chord and thickness of the critical blade section (at constant t/c) and other features primarily affecting strength; b) primary performance dimensions (size, pitch, area ratios); c) secondary feature (skew, rake, hub dia, blade profile and section shape, pitch distribution). Stresses in the ice block due to penetration of the propeller blade will also be assessed by finite element modelling, and likely fracture patterns determined, considering the material properties of ice in both isotropic and non-isotropic forms and under a range of likely conditions of temperature and salinity. Likely configurations of blade/ice interaction load distribution and intensity will be assessed, and compared with conventional assumptions. ... (Au)"--ASTIS [online] database.
Publisher:
ISBN:
Category : Marine engineering
Languages : en
Pages :
Book Description
"The objective of this project is to contribute to the effective design and regulation of propellers in Arctic service. The work will involve the use of special purpose propeller analysis programs developed by Martec Limited over the past seven years to determine the stress distribution and stress levels in propeller blades and the formulation of methods for predicting propeller/ice interaction forces. In this project a typical modern icebreaker propeller will be modelled with a nominal loading of uniformly distributed pressure over a depth of the blade immersed in a block of ice, and the stress distribution pattern and critical points where failure is likely to originate will be determined. Similar finite elements modelling will be carried out to assess sensitivity to a number of likely parametric variations, including: a) chord and thickness of the critical blade section (at constant t/c) and other features primarily affecting strength; b) primary performance dimensions (size, pitch, area ratios); c) secondary feature (skew, rake, hub dia, blade profile and section shape, pitch distribution). Stresses in the ice block due to penetration of the propeller blade will also be assessed by finite element modelling, and likely fracture patterns determined, considering the material properties of ice in both isotropic and non-isotropic forms and under a range of likely conditions of temperature and salinity. Likely configurations of blade/ice interaction load distribution and intensity will be assessed, and compared with conventional assumptions. ... (Au)"--ASTIS [online] database.
Experimental Study to Separate Into Components the Interaction Force Between Propeller and Ice Piece
Author: Kenkichi Tamura
Publisher:
ISBN: 9788276131994
Category : Ice breaking operations
Languages : en
Pages : 29
Book Description
Publisher:
ISBN: 9788276131994
Category : Ice breaking operations
Languages : en
Pages : 29
Book Description
Working Group on Ice Forces
Author: Cold Regions Research and Engineering Laboratory (U.S.)
Publisher:
ISBN:
Category : Force and energy
Languages : en
Pages : 400
Book Description
Publisher:
ISBN:
Category : Force and energy
Languages : en
Pages : 400
Book Description