Laser-assisted cutting technology will reduce engine parts manufacturing costs

According to the China Aviation Information Center, the British "Flight International" reported on June 5, 2007 that the West Virginia High-Tech Alliance and NASA jointly invested in laser cutting lightweight by Aurora Flight Sciences. The SiC ceramic matrix composite (CMC) project is underway.

CMC is mainly used for high-temperature structural parts of rockets and turbine engines, replacing nickel, chromium and titanium alloys, and can reduce weight by 50%. Aurora said that a technology will be developed in the project to significantly reduce the time required for CMC parts finishing.

The process is to heat the surface of the part to 540oC (1,000oF) before the part is cut with advanced tools, so that the brittle CMC material just softens. This process can produce more complex parts that cannot be produced with current grinding processes. This work will be carried out at Aurora's plant in West Virginia.

The project will also be assisted by Kansas State University and engine manufacturer GE Airlines. Aurora will manufacture and test typical CMC parts on rockets and turbines to determine the effectiveness of laser-assisted machining.

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