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Clap-and-Fling: Insect Wing Lift Mechanism

Interactive 3D model of the Weis-Fogh clap-and-fling mechanism: paired insect wings clap together at the top of the stroke and peel apart in a fling, generating a burst of circulation that boosts lift beyond steady aerodynamics at tiny Reynolds numbers.

Ecology & Conservation Biology3DAdvanced60 FPS📱 Mobile-adapted⇄ 2D version

Some of the smallest flying insects — thrips, and some of the tiniest parasitic wasps — fly at Reynolds numbers so low that conventional steady-state aerodynamics can't fully explain their lift. This simulator renders a wing pair performing the Weis-Fogh clap-and-fling stroke: the wings sweep up and close together at the top of the beat, then peel apart to fling open at the start of the downstroke, trapping and accelerating air between them. Tune wingbeat frequency, insect size, how tightly the wings actually clap, and how fast they peel apart, and watch the live Reynolds number, instantaneous circulation and fling lift-boost factor respond exactly as the underlying kinematics dictate.

⚙ Under the hood

An interactive 3D model of the Weis-Fogh clap-and-fling mechanism: paired insect wings clap together at the top of the stroke and peel apart in a fling, generating a burst of circulation that boosts lift beyond what steady aerodynamics predicts at these tiny Reynolds numbers.

clap-and-flingweis-fogh mechanisminsect flightlow reynolds numbercirculationaerodynamics

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install