Auxiliary power units (APU) supply compressed air and energy for aircraft. A turbine wheel is one of the core components for generating power.

Modern APUs have a so-called “bladed disk”, also known as a “blisk”, as a turbine wheel.

The upper part of the blisk generally wears down due to erosion.

Directed Energy Deposition (ISO 52900) is used to reapply material to the complex-shaped turbine blades where erosion has led to a deficit.

The project content is to support the industrial partner in the introduction of the production technology and certification of the repair.