Relatively few studies have addressed the slat noise dependence on gap, overlap and
deflection angle, although slat noise level and spectral content are topics of increasing …

Experiments in closed-section wind tunnels are more suitable for comparisons with
numerical results than corresponding experiments in open-section tunnels because well …

The airplane, during the approach to landing, use high-lift devices to produce more lift at
lower airspeeds, enabling the landing on shorter runways. In this flight condition, high-lift …

The design of a microphone array affects the performance of beamforming algorithms in the
localization and evaluation of acoustic noise sources. This paper addresses a circular …

I recent years, concerns about the noise generated by aircraft, mainly around airports, have
been the focus of several studies and tighter regulations, since aircraft noise reduction …

This paper reports a study of the sound emitted by a slat of a two-dimensional three-element
MD30P30N airfoil, on which a two-dimensional excrescence was installed to represent a …

For over thirty years optical belt drive configurations are being used in food industries to
automatically sort produce in high operating speeds. Despite their benefits, these multi …

Slat noise experiments are sometimes performed to provide data for the validation of
numerical procedures. Under such circumstances, closed-section wind-tunnels, in contrast …

Phased-array microphone techniques are widely used tools for the measurement and
analysis of aeroacoustic noise sources. Nevertheless, beamforming results of sources …

W the developments of high-bypass turbofan engines, the relevance of airframe noise
sources contribution to the total aircraft noise has increased, being known in the past as the …