The noise reduction techniques for unmanned air vehicles

Most of the unmanned air vehicles (UAV) were developed with military purposes and freely used without any regulatory concerns. UAVs are expected to be used at the commercial applications in near future. The noise generation mechanism of conventional aircrafts, reduction techniques and regulatory goals are outlined in the paper. Similarly, the noise generation and control for the UAVs are discussed. Study, indicated that future studies are needed to control the noise of UAVs better and regulatory involvement is essential to keep their impact minimum on human health and environment.