Aeroplanes

A stone hurled through the air is a flying machine, James Slough Zerbe insists—and its shape is not what makes it fly. What, then, keeps an aeroplane aloft?

Writing in aviation’s early decades, after Langley’s 1896 flight and the Wright brothers’ piloted success in 1903, Zerbe challenges the notion that flying machines must simply imitate birds. He begins with familiar forces—gravity, mass, momentum and air resistance—to ask how power turns a machine at rest into one supported by the atmosphere. The argument cuts against the prevailing emphasis on lightness and wing shape, and makes the mechanics of flight feel less like a mystery than a problem to be tested. If form is not the key, what is?

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