Bruel & Kjaer UK Ltd. - PRODUCT NEWS

INTA expands aero acoustics lab with an array-based Noise Source Identification System

INTA (National Institute for Aerospace Technology) has recently acquired an array-based Noise Source Identification system from Brüel & Kjær.

In recent years, the Environmental Impact Laboratory of INTA (LIMA) had been developing their own microphone array system, but due to the large number of channels needed for expanding the aeroacoustics laboratory with wind-tunnel noise measurements, the INTA working acoustic group decided to purchase Brüel & Kjaer equipment for noise localisation.

The system consists of an array with 42 precision microphones, several PULSE LAN-XI modules and the PULSE Acoustic Test Consultant and Beamforming applications.

The microphones are capable of measuring up to 20 kHz and the Dyn-X input modules provide an extra-large dynamic range to avoid overloads. Using this system INTA can locate and identify noise sources of vehicle and aircraft components obtaining noise colour maps for each frequency of interest. This information helps the engineers to modify the structure in order to improve its aerodynamics and noise emission.

Following delivery and the site acceptance test, Brüel & Kjær also held a seminar to train the INTA engineers on the use of the system.

About Bruel & Kjaer
Brüel & Kjær is a world-leading manufacturer and supplier of sound and vibration solutions for use in a wide range of applications including environmental noise measurements, building acoustics, vibration measurements and quality control for use in the automotive, aerospace and consumer industries, as well as by local authorities. Today Brüel & Kjær has 900 employees and sales offices in 55 countries. Brüel & Kjær is a subsidiary of UK-based Spectris plc. ( Spectris has annual sales of approximately £656m and employs around 6000 people worldwide in its 15 business units.
For more information, please contact :-

Bruel & Kjaer UK Ltd.
Jarman Way, Royston, Herts. SG8 5BQ. UK
Tel: +44(0) 1763 255 780
Fax: +44(0) 1763 255 789

June 2012

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