Bombardier Learjet wanted glass windshields and cockpit windows for the Learjet 85 aircraft, and PPG was selected because of our expertise and history designing and producing sophisticated glass transparencies, Scott said. They will use our latest sealant and interlayer technology for extended service life.
The four windows will wrap around the cockpit to enhance visibility and aerodynamics, with the large windshields formed into complex, compound shapes, according to Scott. Three plies of Herculite(R) II chemically strengthened glass will afford strong, lightweight transparencies. The windshields will be designed to resist impact by a 4-pound bird at 300 knots.
Rain-repellent Surface Seal(R) coating on the windshields will maintain visibility in rain conditions, enabling Bombardier Learjet to eliminate windshield wipers on the aircraft to save weight and reduce aerodynamic drag.
New PR-1425CF chromate-free sealant by PPG used as the outboard moisture seal will provide ultraviolet and weather exposure resistance in an environmentally responsible formulation. Proprietary new PR-2060 sealant used as an internal moisture seal will provide an additional barrier to further reduce moisture ingress and extend service life, according to Scott. Highly resistant to moisture damage, S-123 urethane by PPG will be used as the interlayers to bond the glass substrates, affording more elasticity than vinyl to eliminate cold chipping and defend against delamination.
Scott said PPG is designing and will produce the windshields and side cockpit windows for the Learjet 85 aircraft at its Huntsville aircraft transparencies facility with deliveries expected to begin the first quarter 2011 to Bombardier Learjet s Wichita, Kan., facility.
Launched on Oct. 30, 2007, the new Learjet 85 aircraft will be the first Bombardier Aerospace jet and first business jet designed for type certification under U.S. Federal Aviation Administration FAR Part 25 to use composite materials for all external primary structures.
PPG Aerospace is the aerospace products and services business of PPG Industries. PPG Aerospace Transparencies is the world s largest supplier of aircraft windshields, windows and canopies. PPG Aerospace PRC-DeSoto is the leading global producer and distributor of aerospace coatings, sealants, and packaging and application systems.
About PPG
PPG Industries vision is to continue to be the world s leading coatings and specialty products company. Founded in 1883, the company serves customers in industrial, transportation, consumer products, and construction markets and aftermarkets. With headquarters in Pittsburgh, PPG operates in more than 60 countries around the globe. Sales in 2009 were $12.2 billion. PPG shares are traded on the New York Stock Exchange (symbol: PPG). For more information, visit www.ppg.com.
China Chemical Weekly: http://news.chemnet.com/en/detail-1411716.html
