Engine mounts attach the engine to the pylons. They are one of the most stressed parts on an aircraft. This makes the high-quality work of BÖHLER Schmiedetechnik GmbH & Co KG all the more important.
The pylon is the link that connects the engine and wing. On each pylon features a forward and aft engine mount – these affix the engine to the pylon. These mounts must withstand enormous stresses – especially during an aircraft’s takeoff and landing.
Strength at high temperatures
Because of waste heat from the engine, mounts must maintain their high strength even at temperatures of up to 500 °C. They must also possess high fracture toughness. “Engine mounts are produced for the life span of an aircraft – there aren’t any replacement parts here,” said Hans-Peter Freudenthaler, Head of Design Engineering at BÖHLER Schmiedetechnik GmbH & Co KG. And an aircraft is employed for an average of 25 to 30 years.
Each mount is unique
No aircraft is like another and every type of engine develops heat differently. As a consequence, each new engine mount is also unique. Depending on requirements, three different material groups are used at BÖHLER Schmiedetechnik GmbH & Co KG:
- Nickel-based alloys: These steels are primarily used at extremely high temperatures.
- Titanium alloys: Titanium weighs half as much as steel and is used where light weight is needed.
- High-alloy steels: These primarily contain chromium and molybdenum and are used when especially high strength is needed at low temperatures.
Incidentally, the steel alloys are produced by the neighboring sister company, BÖHLER Edelstahl GmbH & Co KG.
The latest video from the voestalpine image and brand campaign focuses on engine mounts we produce for aircraft in Kapfenberg, Austria, and shows them being installed in the Airbus A380 of Emirates Airline. An ongoing blog series offers further insight and background information about the product, the areas of application and the market as well as about Hans Freudenthaler from Böhler Schmiedetechnik GmbH & Co KG, the star of the campaign.