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What is the safety reason that airplane windows have to be open during take off and landing?
Wiki User
∙ 14y ago
Improved visibility might be helpful in case of an emergency. Specifically, the occupants must be able to see outside to assess if it is safe to open the emergency exits. This is especially important in emergencies that invovle water landings (if an exit is below the water line) or in cases of an external fire, where the act of opening an exit will expose the occupants to the fire.
Wiki User
∙ 14y ago
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Why are airplane windows curved?
Why are airplane windows curved? A: This Q is about windows that are NOT flat. Usually curved windows are designed to fit the shape of the airplane so as make the airplane more aerodynamic and not be boxy. Why are airplane windows rounded on the corners? A: One of the first British jets began to crash for no reason. This airplane, the Comet, had large square windows. The investigation discovered that the airplane cracked open at the corners of the windows. This was about the time that engineers began to understand the phenomna of Fatigue. Their tests showed that the corners of the windows resulted in higher stresses and it fatigued the metal. They redeisgned the windows to be rounded and it reduced the stresses and no more planes crashed. Sharp corners in holes of any surface that is carrying a load will increase the stresses. If the corner is changed to a curved edge, then the stresses are lowered. Think of stress as a flow of forces and when it comes to a sharp corner, the flow can't go around the corner.
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