How do aeroplanes fly? Why can some fly up-side down?
Answer / Kailash Chandra
"Aeroplanes fly by generating lift, which is an upward force that opposes the weight of the aircraft. This is achieved through the wings' unique shape and the airflow over them (airfoil). The wing's upper surface has a cambered shape to create lift, while the lower surface has a flatter shape to reduce drag. Regarding up-side down flight, some planes are designed to be 'aerobatic', which means they can safely perform maneuvers like inversions (flying upside down). This is possible due to their robust design and control systems."
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