Sting (fixture)

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A model Cessna mounted on a sting with helium-filled bubbles showing streamlines of the wingtip vortices.

In experimental fluid mechanics, a sting is a test fixture on which models are mounted for testing, e.g., in a wind tunnel. A sting is usually a long shaft attaching to the downstream end of the model so that it does not disturb flow over the model.

Stings often attach to internal balances to measure the forces on the model.

A CAD model of an internal balance


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