PPG Aerospace has a successful history as the transparency supplier for the advanced C-27J tactical twin-turboprop airlifter that began with its predecessor, the G222 twinturboprop medium-transport aircraft. PPG designed and built a complete transparency system for the G222, including anti-icing and antifogging system electrical controllers.
PPG Aerospace continues to demonstrate success in providing glass cockpit windows to the market to meet the stringent certification requirements and performance levels demanded by worldwide operators.
The PPG windshield and No. 2 windows for the Alenia C-27J and G222 are an all-glass design to provide the operator outstanding strength, durability, improved damage tolerance and enhanced visibility. The all glass design features chemically strengthened glass. The all glass design is based on Herculite® II chemically strengthened glass developed by PPG. It is used in transparency systems where designs require high strength to weight ratio, high performance, and long service life. Additionally, it offers greater damage tolerance and scratch resistance as a result of its high surface hardness. The unique properties of Herculite® II chemically strengthened glass allow lightweight cockpit windows to be designed for structural, load bearing applications. For these applications, aircraft loads are transferred through the cockpit window, thus allowing for reduced weight in the fuselage structure.
Since its introduction, Herculite® II chemically strengthened glass has been field proven in all cockpit window applications for both structural and nonstructural applications. Herculite® II is used on regional, commercial, general aviation, and military aircraft, |