More efficient aircraft and wind turbines will need more accurate aerodynamic profiles. This will require a step change in large-scale measurement accuracy. The National Physical Laboratory (NPL) is developing a state-of-the-art measurement technique, originally invented for the Large Hadron Collider, into an instrument that may provide this. The lab's divergent beam FSI system promises to allow self-calibrating and highly accurate coordinate measurements of multiple targets simultaneously, with direct traceability to the SI meter.
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