Aero engine challenges grow as requirements for noise, efficiency, weight and safety are becoming more stringent. New engines must be quieter, safer, lighter and more efficient – all whilst remaining within the development budget.
The development and testing of aero engines to meet these more demanding specifications require fast and accurate tools that cover the entire design and certification process.
Brüel & Kjær provides the highest quality tools available to overcome the latest noise and vibration challenges. Brüel & Kjær has combined technical expertise with customer feedback to develop the tools and solutions to best meet the customers’ needs – from sensor to decision point. Solutions are provided for:
- Ensuring the quality of new lighter material applications by modal testing
- Improving quality and test efficiency in aero engines
- Systems for development and measurement of new noise-optimised engine/ acoustic lining designs and propagation code validation (engine duct modal analysis, far-field noise measurement, and acoustic panel in-situ impedance measurement)
- In-flight engine monitoring with flight-certified, high-temperature accelerometers
Although aero engines provide the bulk of noise during takeoff, noise standards set limits for representative of key noise-sensitive flight points (Take-Off/Sideline, Cutback/Flyover, Approach). The Rotating and Acoustic Test Suites provide state-of-the-art tools to test and measure changes in noise caused by introducing new materials, such as carbon fibre blades, for benchmarking or approval.
If there is a problem with an engine, the aircraft doesn’t fly. Preventative maintenance and manufacturer-specified checks prolong the health of engines. Brüel & Kjær’s permanently installed HUMS sensors help by monitoring gearbox conditions.
Aero engine efficiency, noise minimisation and safety are primary concerns when designing new engines. Many new considerations arise when improving engine efficiency by using composite materials such as carbon fibre blades. These new materials must stand up to the aerodynamic loading and conditions encountered in use and required by standards. Brüel & Kjær’s structural dynamics experience and state-of-the-art equipment enable unmatched real-time analysis and post-processing capabilities for those new materials.
Durability testing of sub-components
Vibration can be a limiting factor on the performance, precision, durability and comfort of an aircraft and can cause serious problems, resulting in repairs, major overhauls, or catastrophe. Subjecting components or whole assemblies to shock and vibration will provide aerospace companies the possibility to evaluate how the structure will stand up to real-life conditions before assembling the aircraft.