A method for designing a dual-effect vortex-suppressing bionic marine propeller
By designing a blade profile on a marine propeller that combines the blade tip winglets with the geometric features of a bird's airfoil, the problem of poor tip vortex cavitation suppression effect has been solved, resulting in more efficient cavitation performance and a longer service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to effectively suppress tip vortex cavitation in marine propellers, leading to a decline in hydrodynamic and noise performance, and traditional biomimetic designs have limited suppression effects.
The blade profile design combines the geometric features of the tip winglet with those of bird airfoils. By tilting the tip winglet and adjusting the back profile of the blade, combined with the arch line and thickness distribution of the sparrowhawk's wing, dual suppression of tip vortex cavitation is achieved.
It significantly reduces the cavitation area of the tip vortex, improves the cavitation performance of the propeller, extends its service life, and improves hydrodynamic and noise performance.
Smart Images
Figure CN122402731A_ABST
Abstract
Citation Information
Patent Citations
Ship propeller with blade tip winglet
CN208216962U