ADiSS-Aeroelastic damping in separated flows

Purpose and goal

The purpose of the project was to establish a test rig that can address aeroelastic properties of compressor blades in "off-design" operation and generate high-quality detailed measurement data for validation and calibration of aeromechanical calculation methods.Results of measurements and calculations on the test rig have contributed to an improved understanding of basic phenomena that lead to or affect blade vibrations such as flutter.This, in turn, leads to improved design methods that can predict the potential occurrence of hazardous vibrations early in the design stage.

Expected results and effects

Project results have contributed to an increased understanding of mechanisms that drive aeroelastic response of blades during vibration in separated flow, which is an important prerequisite to continue developing future aircraft engine solutions that are efficient and reliable.Doctoral student at KTH who has been employed within the project has completed approx 70% of his doctoral studies and is expected to achieve his degree at the beginning of 2025.Project results have been reported in publications (3 conference contributions and a journal article-under publication).

Planned approach and implementation

As part of the project, a completely new test rig was to be built and put into operation, it has caused some delays along the way. This has led to the initially planned investigations into the impact of surface roughness being started, but not completed in their entirety within the set project time, but will be carried out within the continuation project ADiSS 2.0. The cooperation and knowledge transfer between GKN and KTH has worked very well, with regular follow-up meetings between the project participants throughout the project period, which has been decisive for the project´s success