The United Engine Corporation (UEC) has completed a key phase of engineering tests on the PD-8 engine, designed for the Sukhoi Superjet 100 (SSJ100). The tests were conducted on a test stand at UEC-Saturn in Rybinsk and included simulated fan blade failure, according to the company’s press service.
Such rig tests are a mandatory part of the engine’s certification program. To ensure airframe integrity and safe landing capability, fan blades must fail without breaching the engine casing.
“To assess blade reliability, a pyrotechnic charge was used to fracture the blade at takeoff power. The engine structure retained all components, and no casing damage was recorded,” the statement said.
Preparation for the test included installation of a current collector, phasing system, and air sampling system. The sampling system confirmed that oil vapor emissions from the blade rupture did not exceed permissible limits within the aircraft’s environmental control system. The tests validated the design solutions and technical specifications defined in the engine’s development program, UEC noted.
Previously, the PD-8 underwent comprehensive engineering tests for acoustic impact, water ingestion, crosswind performance, and reverser operation. All tests were performed at thrust levels above 17,600 pounds-force (≈8,000 kgf), suitable for use on regional aircraft such as the SSJ100 and amphibious Beriev Be-200.
UEC added that the full program of rig and flight tests is ongoing. Successful demonstration of fan blade containment brings the PD-8 closer to type certification, a prerequisite for commercial operation on the SJ-100.
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