CARL-Nyquist Nebula

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A Nyquist diagram obtained from a rap test of the AFRL 6000 horsepower Compressor Aero Research Lab (CARL) bedplate.

Beck's Curves

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Frequency vs. amplitude; stability regions of a periodically excited beam.

Holy Streamwise Coherent Structure Propagating in the Boundary Layer, Batman!

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PIV image of separated flow over the suction surface of a low pressure turbine.

Blue halo

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Glow of xenon plasma from a 200 Watt Hall thruster.

Toroidal blue flame ring

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The image shows a Toroidal Blue ring flame that forms around the main flame immediately downstream of the bluff centerbody. The fuel for the flame is an ethylene/nitrogen mixture. This blue ring flame exhibits a slight oscillation in the vertical direction. The blue color is attributed to CH-radicals.

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