Case Studies

The development of gas turbines (jet engines) presents many technological and time-related challenges. A key component in every gas turbine is the compressor, which increases the pressure of the air entering the combustors. Compressor test and qualification is a highly specialised task that can benefit from outsourcing.

In 2002, Snecma Moteurs and Brüel & Kjær began cooperation on a project to design a PULSE-based state-ofthe- art portable system to perform ground vibration tests on Snecma's M53 engine which powers Dassault Aviation’s Mirage 2000 family and the Snecma Larzac, two of which power the Dassault-Bréguet/Dornier Alpha Jet.

For Jacob Kirkegaard, an accomplished musician turned sound artist, the natural world is filled with music, hidden and unedited deep within the earth’s surface or caught in the current of an urban waterway. Equipped with a Brüel& Kjær accelerometer on his latest project, Jacob was able to uncover and capture the raw harmonies of a rumbling volcano, spewing geysers and crackling ice to create organic symphonies.

Located in the United Kingdom, BAE Systems’ facilities at Warton and Brough use highly advanced acoustic and vibration measurement and analysis solutions to provide testing capabilities to its customers, both within BAE Systems, and for external companies. BAE Systems’ relationship with Brüel &Kjær began in the 1950s. Today, PULSE™ data acquisition and analysis systems are used, together with a wide range of microphones, accelerometers and calibrators supplied by Brüel & Kjær.

Noise is an important factor in the development of hydraulic pumps and a new, state-of-the-art noise testing facility has been commissioned at Bosch Rexroth’s site at Schwieberdingen, near Stuttgart, Germany. A PULSE data acquisition and analysis system, with customised software, is used for noise measurement and analysis.