Noise map superimposed on the experimental setup
Noise map superimposed on the experimental setup
In a special test setup, a Counter-Rotating Ultra-high-bypass Fan (CRUF) engine simulator is installed in front of an aircraft wing with extended landing flaps in the DLR wind tunnel. When the engine simulator is started, the interaction between the engine and wing can be measured acoustically. The photo montage shows in colour where noise is generated by the engine and on the trailing edge of the wing.
