Optimal Turbine Clearances

for an improved efficiency

Active Clearance Control (ACC)

SABosman is the world market leader in the field of co-designing and manufacturing active clearance control systems.

The active clearance control system ensures that the clearance between rotating and stationary parts of an aircraft engine is minimised. This is of great importance, as 0.25mm of clearance increases fuel consumption by around 1%. The system is called active, as the amount of compressor cooling air can be adjusted.

All Boeing and Airbus single aisle aircraft (the A320 and B737 family) have an SABosman ACC.

SABosman manages the entire system with critical processes like:

• Simulations
• Critical forming processes like deep-drawing and hydro-forming
• Vacuum brazing and welding