Robotic acoustic drilling of composite panels
New-generation aircraft are more fuel-efficient and quieter for passengers and people who live close to airports. Engine acoustics have been optimized using micro-drilled panels that cover a large portion of the interior and exterior surfaces of the cold air stream. This is the principle of the Helmoltz resonator, which is applied to sandwich panels that comprise a honeycomb and a pierced skin with 40 to 60,000 holes per m².
Manufacturing these panels is a real challenge partly because production rates have never been so high, and partly because of increasing pressure on production costs.
GEBE2 designs and manufactures robotic cells with multi-spindle heads that provide greater flexibility than special machines, and are more cost-effective than solutions based on conventional CNC machine. This pioneering solution has been chosen to produce most of the acoustic panels for the LEAP.