Rolls-Royce is running a comprehensive durability programme at its test facilities in Derby to reduce the wear and performance loss that jet engines suffer due to sand and fine dust. The programme aims to offer a solution to the efficiency problems frequently experienced by airlines operating in the Middle East, by making engine components more resistant to heat and abrasive effects.
Sand and dust particles ingested during take-off reach the hottest sections of the engine, causing structural wear and a loss of performance. Rolls-Royce is tackling this critical issue at its root with the new testing process.
Effect of Sand and Dust on Jet Engines
Fine dust and sand particles reaching the engines cause corrosion and coating wear, particularly in the hot sections. The blockage of cooling holes increases engine temperature, resulting in reduced efficiency. Pat Hilton, Head of the Rolls-Royce Test Facilities, highlighted that these particles rapidly erode engine components “as if operating in an environment unprotected from sand”, underscoring the significant cost and maintenance implications.
Engine Components Redesigned
As part of the durability programme, Rolls-Royce has made the metals used in engine components more resistant to high heat and abrasive effects. Cooling holes have also been repositioned to reduce the risk of blockage. This innovative approach is being tested across various engines, including the high-temperature Trent XWB-97 model.
These efforts form a key part of the company’s extensive durability programme valued at over £1 billion.
Synthetic Dust Developed in Partnership with the University of Manchester
Rolls-Royce collaborated with the University of Manchester to simulate real dust conditions from the Middle East in a laboratory environment. The synthetic dust developed perfectly represents the fine, talcum powder-like particles found in the region’s airspace. This allows engineers to identify potential problems during the design phase and develop stronger solutions.
Test Results Confirm Improvements
The three-phase test programme at Rolls-Royce’s Testbed 80 facility in Sinfin has completed its first two phases. Engines that were tested returned to service, and their time on wing increased by 60% without requiring overhaul.
Currently, a Trent engine can cover the equivalent of 500 flights around the world before its main parts require replacement. When the programme is completed in 2028, this duration is expected to double.
Commenting on the progress, Pat Hilton said:
“As our fleet evolves, we aim to keep engines flying twice as long. Knowing that the work being done today will pay off in the coming years makes us proud to be part of this journey.”
Reactions from Airlines and Industry Impact
Last year, Emirates President Sir Tim Clark questioned the durability of the Trent XWB-97 engine used on the Airbus A350, expressing concerns about its reliability on long-haul flights. These engines hold strategic importance for major industry players such as Emirates, Etihad, and Airbus.
Rolls-Royce has officially announced that the ongoing durability programme has resolved this issue across the entire fleet. This development will lower operational costs for airlines and reduce maintenance times, improving aircraft availability.
A New Milestone in the Industry
Rolls-Royce’s new technology developed against sand and dust damage is considered a major milestone in engine durability within the aviation sector. Doubling engine life will:
- reduce maintenance costs for airlines,
- facilitate operational planning,
- increase fleet efficiency,
- and largely solve the issues faced by Middle Eastern airlines.
These advancements show that the global aviation industry is moving towards a more durable, efficient, and economical engine architecture.
