Chine (aeronautics)

In aircraft design, a chine is a longitudinal line of sharp change in the cross-section profile of the fuselage or similar body. The term chine originates in boatbuilding, where it applies to a sharp profile change in the hull of a boat. In a flying boat hull or floatplane float, the longitudinal line of sharp change in cross-section where the bottom plane meets the sidewall is an example of a chine.

On some supersonic aircraft a chine extends sideways for some distance, with a very sharp edge blending in with the main wing leading edge root. The rest of this article is concerned with this type of chine.

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