Pomorstvo, Vol. 21 No. 2, 2007.
Stručni rad
Computer-based programme for defining the geometric and hydrodynamic characteristics of a marine propeller
Mladen Radonić
Roko Dejhalla
Sažetak
The paper aims at analyzing the selection and optimization of a marine propeller and at presenting the computer-based programme for defining the geometric and hydrodynamic characteristics of a marine propeller. A marine propeller must be efficient, should not cause unintended vibrations and noise, and the erosive damage due to cavitation on wings should not be tolerated as well. The main task of a designer is to keep the balance between these requirements. The initial approach to the marine propeller design is usually based on the results obtained from the B-screw series free run tests. This includes the changes in a number of design parameters such as the number of wings, the propeller pitch ratio, the wing area and the section types. The marine propeller that meets the characteristics of the particular screw series can be easily designed in order to meet the demanding design standards. Based on the well known B-screw series polynomials, a computer-based programme „BroVi“ has been created. This programme can be successfully used for the marine propeller optimization and in determining the working point (revolution number, propeller thrust, propeller torque, propulsive power).
Ključne riječi
marine propeller; B-screw series; computer-based programme
Hrčak ID:
19034
URI
Datum izdavanja:
20.12.2007.
Posjeta: 2.382 *