Working across both industries, polymers and aviation, I’ve got a small fun fact for you today.
Most people think aircraft passenger windows are only made of glass.
Well, they’re usually not.
In modern business jets like the Gulfstream G650, passenger windows are primarily made from advanced aerospace polymers, especially stretched acrylic (PMMA) engineered to handle massive pressure differences, temperature changes and thousands of flight cycles.
PPG’s Aerospace Business developed a material called Opticor™ — a high-performance transparent aerospace plastic developed specifically for aircraft windows. It’s lighter than traditional stretched acrylic and offers exceptional crack, flame and impact resistance.
Even more interesting:
the iconic rounded shape is not just about design.
Rounded windows help distribute stress more evenly across the fuselage and significantly reduce the risk of cracks caused by repeated cabin pressurization.
Gulfstream Aerospace is very proud of having the largest windows in business aviation sector.
Sometimes the most advanced applications of plastics are flying 51.000 feet above us.
And yes… we usually walk around the cabin without shoes 😉
