Offshore Renewable Energy Catapult Additional Funding (non-Core) for Financial Year 2016/17 (“the Works”)

Engineers are building a machine that fires water droplets at spinning turbine blades to simulate years of storm damage in a matter of hours. Offshore wind farms lose significant generating capacity because rain erodes the leading edges of blades, roughening their surfaces and reducing aerodynamic efficiency. Current testing methods are inconsistent and poorly understood, meaning manufacturers cannot reliably predict how long a new coating or blade material will last before it degrades. This test rig will subject blades to controlled, repeatable rain impacts, allowing researchers to study the fundamental physics of erosion—how droplet speed, size, and impact angle combine to strip away protective layers. If the rig works as designed, it will accelerate the development of tougher coatings and materials, and help establish industry-wide standards for erosion testing. That could extend blade lifetimes, reduce maintenance costs, and keep offshore turbines generating electricity more reliably. The work is applied—it directly targets a known industrial bottleneck—but the knowledge gained about erosion mechanisms will also feed into fundamental materials science, potentially informing protective surfaces for aircraft, radar domes, or other structures exposed to high-speed rain.