Why do big commercial airplanes have wings on the bottom and big (US) military airplanes have their wings on top?
In: Engineering
Low wings leave the engines and fuel tanks closer to the ground which aids in maintenance, and keeps them away from the passenger area which marginally increases safety.
High wings keeps the engines and fuel tanks away from the ground which can keep them safer from debris, which is important for a military aircraft that might be operating in areas with poor infrastructure. It also allows the fuselage to be closer to the ground which can make loading cargo easier when there isn’t the kind of aid that a commercial airport can offer.
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