(13/12/22)  Rolls-Royce and Pratt & Whitney have signed a joint agreement with Virginia Tech for pre-competitive research focused on the impact of environmental contaminants on aeroengine operation and testing.

The four-year project will leverage Virginia Tech’s research and cross-discipline expertise on engine operation, instrumentation and geosciences, as well as the current research relationships that both Pratt & Whitney and Rolls-Royce have with the university.

“At Virginia Tech, we are honored to be given the opportunity to build on the foundation of our existing academic alliances by partnering with Pratt & Whitney and Rolls-Royce on this project,” said Changmin Son, the Rolls-Royce Commonwealth Professor at Virginia Tech. “The multidisciplinary group, teamed with Mechanical Engineering, Aerospace and Ocean Engineering, and Geosciences, will work together to tackle the impact of the airborne particulate on aircraft engines, which is a huge challenge for today’s aviation industry.”

Rolls-Royce M250 Turboshaft Engine. Click to enlarge.

Rolls-Royce M250 Turboshaft Engine

This research relationship continues longstanding collaboration between Rolls-Royce and Pratt & Whitney on issues that are common across the aerospace industry. The two companies have partnered on several government-based research projects, including a study focused on volcanic ash damage to aircraft engines.

Work has taken place in the US, UK and around the world, with various groups developing some of the basic understanding needed before complex modeling can be undertaken.

The collaboration between Pratt & Whitney, Rolls-Royce and Virginia Tech in this research initiative is designed to add the more complicated engine testing available at Virginia Tech to further develop mitigation strategies, and to provide information back to these more basic research activities from actual engine operations.

“Rolls-Royce has enjoyed a strong relationship with Virginia Tech for decades, collaborating on a variety of research projects to measure and evaluate engine performance under different conditions,” said Lisa Teague, head of Emerging Technologies and Innovation at Rolls-Royce LibertyWorks. “This new joint research project will help further industry understanding of airborne particles – a key contributor to engine degradation – and their impact on operability.”

Detrimental effects of particle ingestion are common concerns in the aerospace industry and can lead to accelerated engine aging and performance loss.

The short-term goal for the work is leveraging learning from smaller engine tests, which will be performed on a Rolls-Royce M250 engine, to influence large engine test programs by accounting for the difference in engine architecture and operating conditions.

The impact of environmental contaminants costs hundreds of millions of dollars of losses annually for both commercial and military operations as air travel has expanded around the world. It is a multifaceted problem that ranges from basic scientific questions about complex chemistry of the environmental contaminants within the engine, to fleet operations, maintenance procedures, engine design and even weather prediction. It spans a wide range of scientific issues to practical engineering problems which are well suited to a multi-discipline focused project.

The work done on this project will have a direct impact on Rolls-Royce and Pratt & Whitney testing methodology and capabilities.

“Pratt & Whitney sees this as a great opportunity to improve our basic understanding of an issue that is critically important to our entire industry,” said Frank Preli, vice president, Propulsion and Materials Technologies, Pratt & Whitney. “Virginia Tech has the right expertise and facilities to help us make an impact as the joint research team will investigate the fundamentals of particle (sand/dust) properties as the particles pass through the engine with the goal of improving analysis methods to better predict those effects.”

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