TsAGI has created a unique system for non-contact measurement of blade deformation
This system includes a pulsed illumination subsystem with a short flash duration, a synchronization subsystem, and a subsystem for collecting and processing digital images. Using a new system in the T-104 TsAGI wind tunnel, linear and angular displacements of blades were measured in five sections, blade bending deformation parameters were determined with a very small error of 0.01-0.1 mm, and twist deformation parameters were determined with an error of less than 0.01 angular degrees.