The Real Reason Planes Can't Fly Above 40,000 Feet

Why can't commercial airplanes fly much higher than 40,000 feet? The answer lies in a fascinating engineering challenge where lift, engine performance, air density, structural limits, and safety all collide. At extreme altitudes, aircraft approach a narrow zone known as the "coffin corner," where flying too fast or too slow can become equally dangerous. In this video, we explore the real reasons modern airliners stop climbing, how jet engines behave in thin air, and the hidden physics that define the ceiling of commercial flight. #Engineering #Aviation #Airplanes #Flight #Aerodynamics #Technology #TheBuiltWorld #Aircraft #Science #Documentary