Smooth. Real Smooth.

This NASA F-16XL-2 aircraft was used during 1995-96 for the Supersonic Laminar Flow Control project to demonstrate that airflow could smoothly pass over a swept wing flying at supersonic speed. To achieve this, millions of tiny holes were drilled into a titanium "glove" that covered much of the aircraft's left wing. The holes helped direct the airflow over the wing so it would remain laminar, or the opposite of turbulent.

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