Buzz

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Buzz

1. In supersonic diffuser aerodynamics, a nonsteady shock motion and airflow associated with the shock system ahead of the inlet, very rapid pressure pulsations are produced which can affect downstream operation in the burner, nozzle, etc.
2. Sustained oscillation of an aerodynamic control surface caused by intermittent flow separation on the surface, or by a motion of shock waves across the surface, or by a combination of flow separation and shock-wave motion on the surface.

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use