Laser micro drilling methods for perforation of aircraft suction surfaces

To reduce the fuel consumption of large passenger aircrafts the hybrid laminar flow control is a key technology. For drag reduction, several millions of holes with diameters around 50 µm at the leading edges are needed. In this paper, the perforation of such titanium sheets using the laser processes...

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Bibliographic Details
Main Authors: Stephen, Andreas, Ocana, Roberto, Esmoris, Joseba, Thomy, Claus, Soriano, Carlos, Vollertsen, Frank, Sanchez, Rafael
Format: Conference Proceeding
Language:English
Subjects:
HLFC structures
laser drilling
micro-holes
percussion
single pulse
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Summary:To reduce the fuel consumption of large passenger aircrafts the hybrid laminar flow control is a key technology. For drag reduction, several millions of holes with diameters around 50 µm at the leading edges are needed. In this paper, the perforation of such titanium sheets using the laser processes of single pulse and percussion drilling is presented. The single pulse technique is an “on-the-fly” drilling process using a pulsed fibre laser in combination with a drilling optic with coaxial gas supply. The percussion technique is a flexible drilling process using a q-switched fibre laser combined with a galvanic scanner.
ISSN:2212-8271
2212-8271
DOI:10.1016/j.procir.2018.08.157