Passive Techniques for Fan Noise Reduction in New Turbofan Engines: Review

Abstract

Among the various environmental concerns, the aircraft noise item has been constantly growing in importance over the past years. Measures for its reduction at the source as well its mitigation around airports must take into account aspects of medicine and technical design as well as legal and land use planning aspects. Fan noise is one of the principal noise sources in turbofan aero-engines. In this paper a review of the main technologies employed for the reduction of fan noise turbofan engines is presented.

Keywords

• Noise Pollution; Aircraft Noise; Noise Reduction Technologies; Fan noise.