A rotor aerodynamic and aeroacoustic measurement platform is developed in AANTC to study rotor aerodynamics and aeroacoustics. The rotor locations are accurately controlled by a high-resolution 2D transverse, and the 20…
View recordAn airfoil noise measurement platform is developed in AANTC based on the anechoic wind tunnel. A microphone array with 56 microphone is used for sound source detection. The diameter is 0.7m and the frequency range is 50…
View recordPhased microphone array is used in AANTC to detect the aerodynamic sound sources. The array contains 56 Brüel & Kjær microphones and different beamforming algorithms are available for data processing.
View recordA duct mode detection facility is developed in AANTC to evaluate the noise reduction in engine ducts. It is also used for duct mode detection method. The rig has a diameter of 200 mm, the flow speed is 10-60m/s, and the…
View recordDifferent impedance tubes are used to measure the acoustic impedance of sound absorption materials. It can characterize the sound transmission loss and surface impedance as well. The working frequencies of the commercia…
View recordThere are two flow tube facilities in AANTC to study the effects of grazing flows on acoustic liners. Impedance eduction methods are conducted for different types of sound absorption materials. The dimensions of tubes a…
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