Rotating blade underwater dynamic deformation binocular measurement system of composite material propeller model

Abstract

The invention discloses a rotating blade underwater dynamic deformation binocular measurement system of a composite material propeller model, and relates to the technical field of propeller testing. The system comprises two cameras, white light stroboscopic light source equipment, a synchronizer, a software system, optical auxiliary equipment, a target and a dynamometer; the two cameras are arranged beside an observation window in the side of a water drum test section; the white light stroboscopic light source equipment is arranged at an observation window in the upper portion of the water drum test section; the synchronizer is connected with the cameras, the software system and the dynamometer and controls synchronous work of the cameras, the software system and the dynamometer; the target is arranged at a to-be-tested area, and the two cameras shoot at least eight pairs of speckle images, at different positions and in different directions, of the target; the software system is in charge of collecting the speckle images and conducting subsequent correlation analysis; the optical auxiliary equipment is arranged on the observation window in the side of the water drum test section. According to the system, through non-contact optical measurement, the speckle images of blades are obtained, real-time deformation features of composite material blades are obtained correlation analysis, and thus guidance in design and optimization of the composite material propeller is achieved.

Description

technical field [0001] The invention relates to the technical field of propeller testing, in particular to a binocular measurement system for underwater dynamic deformation of rotating blades of a composite propeller model. Background technique [0002] Marine composite propeller technology is an emerging propeller material and design technology. Composite propellers have the advantages of light weight, adjustable stiffness and damping, rigid-flexible coupling and self-adaptation. However, due to the lower rigidity of composite materials compared with metals, the law of fluid-solid coupling deformation caused by hydrodynamic loads of rotating blades has not been fully grasped. Establish the relationship between the geometry and internal structure of composite blades and the hydrodynamic performance of deformed blades. , has become a key issue in the design and research of composite propellers. At present, the industry still lacks a mature method for measuring the dynamic de...

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Problems solved by technology

However, due to the lower rigidity of composite materials compared with metals, the law of fluid-solid coupling deformation caused by hydrodynamic loads of rotating blades has not been fully grasped. Establish the relationship between the geometry and internal structure of composite blades and the hydrodynamic performance of deformed blades. , has become a key issue i

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