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Advances in Aerospace Laser Technologies

Explore new laser technologies in aerospace like laser paint stripping and polygon scanning. Learn about the benefits of polygon scanners, improved flame control, process control, and more for aviation applications.

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Advances in Aerospace Laser Technologies

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  1. New Aerospace Technologies from EWI May 23, 2012 Brian Bishop Business Development Manager – Aerospace 614-270-7052 bbishop@ewi.org

  2. Update on LPS Activities Advances in Laser Paint Stripping Stan Ream Laser Technology Leader EWI 614-688-5092 sream@ewi.org

  3. Another way to scan a beam- polygon scanner by EWI and CWA - • Up to 50 m/s scan speed • All reflective optics • One moving part • Constant scan velocity across scan width • Constant velocity across scan width Rotating Polygonal Mirror Laser Beam Source EWI Scanner, Patent Pending

  4. Polygon “Beta” Scanner- “COTS” availability from WTT - • More robust • Contamination resistant Protective “door” Single body component Water cooling Servo Drive Patent Pending

  5. Why the polygon scanner works • Scan speed reduces flame height • Reduced flame height reduces beam interference • Reduced flame height improves effluent removal • Reduced flame height supports cleaner combustion • Reduced flame height permits better vision High speed video (approximately 300X ) with diode laser illumination

  6. Need for process control- more important for shorter wavelength - • Paint thickness is not constant • Undocumented paint layers may exist • Overlap between passes cannot be assured

  7. System Considerations • LPS of component parts can be relatively simple • Many off-aircraft components are candidates

  8. White, Commercial Aircraft? - fiber lasers not a productive option - • Repositionable robot platform for CO2 laser • Technically feasible but not an attractive solution Laser Chiller Exhaust Filtration Controls

  9. Mobile CO2 LPS Platform?- we’ll never know if we don’t ask - • Large mobile platforms are commercially available • Many questions about laser tolerance to motion Image from SwRI

  10. Literally “out of the box” concept- CO2 laser pitch-catch system - • CO2 beam guided and “guarded” by multiple safety beams Yeah, probably too far out for aircraft

  11. But, maybe not too far out for a tougher class of transportation- CO2 laser pitch-catch system -

  12. Summary • Novel brazing approach developed for silicon carbide joining • Material has a low neutron cross section and is stable at temperatures >1200C • Forms unique composite microstructure • Preliminary reactor testing at OSURR, a fast fluence (E> 0.1 MeV) of 1E18 n/cm2, or 1E22 n/m2 • EWI process does not require high pressure • Other approaches for SiC brazing require high pressures of 30-40 MPa or more; fuel clad tubes are only 1cm in diameter and have thin wall thickness • This provides key advantage in manufacturability to other competitor processes Patent Pending: Provisional Application #61/538,409 “Method for Joining Ceramic Bodies to One Another”

  13. Questions Brian Bishop Business Development Manager – Aerospace 614-270-7052 bbishop@ewi.org

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