Airmen from the 67th Aircraft Maintenance Unit based at Kadena Air Base, Japan, take shelter under the wing of an F-15C during a rain shower at Cope Taufan 2012 at TUDM Butterworth, April. 3, 2012. Cope Taufan, the biennial live-flying exercise between the U.S. Air Force and RMAF, includes dissimilar basic fighter maneuvers and dissimilar air combat tactics training.Battling erosion

Even gentle rain or dust can cause significant damage to coatings on aerospace structures moving at flight speed. At the Air Force Research Laboratory’s state-of-the-art erosion facilities, we provide military and commercial customers unmatched testing and evaluation services to help ensure coatings are robust enough to withstand these elements.


Rain Erosion

 AFRL Whirling Arm Rain Erosion Test Rig 

Setting the gold standard for qualification of aerospace materials susceptible to rain-erosion damage, this rig employs an 8-foot-diameter whirling-arm, double-blade tip simulating the impact-effects of high-speed flight through rain at speeds up to 650 mph. Test specimens are rotated horizontally at specific velocity through simulated rainfall rate of 1 inch per hour, with drop diameters of ~2 mm.

Supersonic Rain Erosion Test Rig Figure 01

Supersonic Rain Erosion

AFRL Supersonic Rain Erosion Rig (SURE)

The SURE rig simulates the harsh environments of flight through rain at speeds up to Mach 2.3, with raindrop sizes between 1 and 2 mm. Our experts test systems, new technologies for aerospace and defense materials, abradable and ablative coatings for air and space vehicles, and structures such as radomes, leading edges, fan blades, and other parts susceptible to high-impact rain erosion.

Rain Erosion Test Rig Figure 02

Particle Erosion

AFRL Particle, Dust and Sand Erosion Rig

The Particle Rig simulates the effect of dust, sand other fine matter on aircraft surfaces in a particle-laden environment at ambient temperatures. This rig generates wind speeds from 50 to 500 mph and uses a wide variety of particle types, sizes, and angles of attack to evaluate erosion of windscreens and transparencies, infrared window materials and leading edges.

Particle Erosion Test Rig Figure 02