Aircraft manufacturers are required to meet strict regulations on noise and emissions whilst at the same time seeking to reduce fuel consumption. French company Snecma, part of international group Safran, which supplies engines to companies such as Boeing and Airbus, has developed a new engine called LEAP. This features some of the industry’s most advanced technology to make it quieter and more fuel efficient, helping the aviation industry meet its environmental protection objectives.
Snecma has optimised the aerodynamic design of the engine turbine blades, using woven carbon fibre composite fan blades to achieve greater performance. However, the gas turbine is a highly complex machine that needs comprehensive testing and analysis during development in order to optimise its dynamic behaviour. Each test is a major operation which requires detailed planning: test systems must be scalable and capable of handling large amounts of data from parameters such as
strain, vibration, pressure and speed.
In order to speed up testing and certification of the LEAP engine, which will power the next generation of single-aisle commercial jets, Snecma selected a Brüel & Kjær Sound & Vibration gas turbine testing system. This is based on LAN-XI data acquisition hardware and PULSE Reflex data processing software, which together provide dynamic data recording, real-time monitoring and post-test analysis, with the flexibility and portability that Snecma required.
Benefit to the customer
Brüel & Kjær’s system helps gas turbine testers to increase test efficiency and flexibility and improve data integrity. The system can be set up quickly, which significantly shortens test times. Real-time instant feedback is provided through multiple networked monitoring stations to ensure the validity of the test data and eliminate the need for a re-test.