Glossary
What are transonic airfoils, and what is the active clearance control? Check out our technical dictionary and find out more about engine technology terms – from active clearance control to velocity triangle.
Laser drilling
Laser powder cladding
Limiting Mach number
Linear friction welding
Low-pressure compressor
Low-pressure turbine
Low-pressure plasma spraying (LPPS)
Laser drilling
Laser drilling is used to produce cooling air holes in turbine blades and vanes. In the process the laser beam is focused on the surface to be drilled. The high energy density causes the material to melt before it is blown off by a gas jet. A cylindrical hole is produced by applying several short "shots" at short intervals to one and the same point on the surface. Laser drilling is a quick, flexible and cost-effective hole-drilling process.
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