In a joint project, Safran Landing Systems and SLM Solutions tested Selective Laser  Melting to produce a component of a nose landing gear for a bizjet. A world first for a part  of this size.  

The joint objective of the project is to demonstrate the feasibility to produce a main fitting by  Selective Laser Melting process. The component was therefore redesigned for metal-based  additive manufacturing allowing time saving in the whole process, and significant weight  reduction about 15% of the component.  

Due to the stringent requirements of this component, which is one of the parts that transfers the  loads from the wheel to the aircraft structure and is retracted after take-off, Safran selected the  titanium alloy, as it is a material with high mechanical properties, naturally resistant to corrosion, 

which does not require any surface treatment. Additionally, it helps increasing part durability.  Thierry Berenger, Additive Manufacturing project leader at Safran Landing Systems says: “We  chose SLM Solutions as a partner, because of their expertise and the SLM^®800 machine, which  exactly meets our requirements in terms of machine size and reliability.”  

With a vertically extended build envelope, the SLM^®800 is perfectly adapted to produce large  components. The machine is equipped with SLM Solutions’ proven quad-laser technology and  innovative features, like the patented gas flow and a permanent filter, that ensure highest  reliability.  

One of the strengths of the SLM^® technology is its flexibility. Design changes can be quickly  modified, printed and tested, then less time is spent during the prototype development.  Gerhard Bierleutgeb, EVP Global Services & Solutions at SLM Solutions explains: “Additive  manufacturing contributes to save time in the qualification and certification phases by rapidly  providing the parts for testing. We were able to produce the main fitting in few days on the  SLM^®800, vs few months with the forging process.”  

Part Information:  

• Measurements: 455x295x805 mm  

• Material: Titanium  

• Machine: SLM^®800  

This new design invented by Safran Landing Systems, meeting ambitious resistance and  mass reduction objectives, is patented.

Source: Safran