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Acoustic Drilling Process

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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. 

Robotic process

Discover our automated acoustic drilling solution for composites panels.

Learn more!

ACOUSTIC DRILLING PROCESS FOR COMPOSITES PANELS OF AIRCRAFT NACELLE

Since years, our sister company GEBE2 stands as a leader for robotic drilling of acoustic panels dedicated to aircraft nacelle.

The production of holes is made with drilling effectors equipped with multispindle such as cutters or drills. This is a proven process that can be applied on composites (monolithic skin and sandwich panels). Our effectors, the most compact on the market, can access areas on complex parts.

The objective of this operation is to reduce the noise of aircraft engines : the cold air vein is covered with acoustic panels that absord sound waves. These in-between panels consist of a honeycomb core and a pierced skin. Each hole opening into an alveolus plays the role of a Helmholtz resonator.

Robotic accoustic drilling of composite panels | GEBE2

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