Why are the Windows of Aircraft Round or Oval?

Have you ever wondered why the windows of today's passenger aircraft are round or oval and not square? Is it something to do with the pressure at high altitudes or the aesthetics in the cabin, or are there completely different reasons? In the "Ask the Expert" section, we explore these questions with our expert André Simoes Duarte, Structural Engineer at SWISS Technics. 

Flying is fascinating! Aviation is as varied as the destinations SWISS flies to. And the numerous unanswered questions and myths about flying are at least as varied and exciting. In the "Ask the Expert" section, we get to the bottom of the facts and offer simple explanations to the big questions. Our experts know the answer to (almost) everything!

Why are Aircraft windows round or oval?

Do you have an exciting question of your own? We look forward to your input with the subject "Ask the Expert" to swissmagazine@swiss.com