Glossary

What are transonic airfoils, and what is the active clearance control? Check out our technical dictionary and find out more about engine technology terms – from active clearance control to velocity triangle.

Radial-flow machine Recrystallization annealing Reverse-flow annular combustion chamber Rotary friction welding

Rotary friction welding

Inertia welding is the most widely used variant of rotary friction welding. At MTU the process is applied to manufacture highly stressed rotating components. The surfaces to be joined are, as a rule, axisymmetric. The rotary friction welding machines available at MTU are inertia welding machines. The energy needed in the welding process corresponds to the kinetic energy of a flywheel accelerated to a specified speed.