Application of a multipole secondary source for propeller active noise control
Kusni M.a, Soenarko B.a, Djojodihardjo H.b
a Department of Aerospace Astronautics, Institut Teknologi Bandung, Indonesia
b Department of Aerospace Engineering, Universiti Putra Malaysia, Malaysia
Abstract
The commercial feasibility of active noise control (ANC) is very promising due to its capability beyond passive noise control (PNC). To some extent ANC becomes a complement of PNC. The active noise reduction is also capable and beneficial in reducing noise selectively. However, the active noise reduction using a conventional secondary source can become very complicated if a significant noise level reduction is required, since a large number of secondary sources will be needed. The active noise reduction is also less effective for reducing high-frequency noise. With such perspectives, a novel approach has been developed using a multipole secondary source to address the problems mentioned. In addition, the multipole secondary source will be used for numerical simulation of noise reduction in of propeller noise source in a free field. © (2014) Trans Tech Publications, Switzerland.
Author keywords
Active noise control (ANC),Active noise reductions,High-frequency noise,Multipoles,Noise level reduction,Passive noise control,Propeller noise,Secondary sources
Indexed keywords
Active noise control,Multipole source