Location and quantification of helicopter noise sources in a wind tunnel

National Aerospace Laboratory NLR - 32nd European Rotorcraft Forum, ERF 2006

Volumn 1, Issue , 2007, Pages 182-196

  Oerlemans, Stefan ^a  

^a NATIONAL AEROSPACE LABORATORY NLR   (Netherlands)

Author keywords

Acoustic testing; Helicopter noise; Phased arrays

Indexed keywords

ACOUSTIC NOISE; ANTENNA PHASED ARRAYS; PRESSURE TRANSDUCERS; ROTORS; SPEED CONTROL; WIND TUNNELS;

ACOUSTIC TESTING; FLIGHT CONDITIONS; HELICOPTER NOISE;

HELICOPTERS;

EID: 34547573375     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (13)

1. Langer, H.J., Dieterich, O., Oerlemans, S., Schneider, O., Van der Wall, B., Yin, J., "The EU HeliNOVI project- wind tunnel investigations for noise and vibration reduction", Proceedings of the 31st European Rotorcraft Forum, Florence, Italy (September 2005).
2. Yin, J., Van der Wall, B., Oerlemans, S., "Representative test results from HeliNOVI aeroacoustic main rotor/tail rotor/fuselage test in DNW", Proceedings of the 31st European Rotorcraft Forum, Florence, Italy (September 2005).
3. Oerlemans, S., and Sijtsma, P., "Acoustic Array Measurements of a 1:10.6 Scaled Airbus A340 Model", AIAA paper 2004-2924 (2004).
4. Sijtsma, P., and Stoker, R.W., "Determination of Absolute Contributions of Aircraft Noise Components using Fly-Over Array Measurements", AIAA paper 2004-2958 (2004).
5. Oerlemans, S., Schepers, J.G., Guidati, G., and Wagner, S., "Experimental Demonstration of Wind Turbine Noise Reduction through Optimized Airfoil Shape and Trailing-Edge Serrations", presented at the European Wind Energy Conference, Copenhagen (2001).
6. Oerlemans, S. and Méndez López, B., "Acoustic Array Measurements on a Full Scale Wind Turbine", AIAA paper 2005-2963 (2005).
7. Oerlemans, S., and Migliore, P., "Aeroacoustic wind tunnel tests of wind turbine airfoils", AIAA paper 2004-3042 (2004).
8. Brooks, T.F., Marcolini, M.A., and Pope, D.S., "A directional array approach for the measurement of rotor noise source distributions with controlled spatial resolution", Journal of Sound and Vibration 112 (1987).
9. Sijtsma, P., Oerlemans, S., and Holthusen, H., "Location of rotating sources by phased array measurements", AIAA paper 2001-2167 (2001).
10. Blacodon, D., Elias, G., Prieur, J., and Papillier, D., "Noise source localization on a Dauphin helicopter in flight", Journal of the American Helicopter Society Vol. 49, no. 4 (2004).
11. Holthusen, H., and Smit, H., "A new data-acquisition system for microphone array measurements in wind tunnels", AIAA paper 2001-2169 (2001).
12. Johnson, D.H., and Dudgeon, D.E., "Array Signal Processing", Prentice Hall (1993).
13. Amiet, R.K., "Refraction of Sound by a Shear Layer", Journal of Sound and Vibration, Vol. 58, No. 2, pp. 467-482, 1978.