At high incidences, a leading-edge vortex becomes unstable, endangering the flight stability and controllability of delta-wing configurations. Active flow control by pulsed blowing offers an effective mean for stabilising the vortex system and enlarging the flight envelope. Wind-tunnel experiments and numerical analysis demonstrated two positive effects on the flow field, when the unsteady jets were active: postponing the mean vortex breakdown position and reattaching the otherwise separated shear-layer.
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At high incidences, a leading-edge vortex becomes unstable, endangering the flight stability and controllability of delta-wing configurations. Active flow control by pulsed blowing offers an effective mean for stabilising the vortex system and enlarging the flight envelope. Wind-tunnel experiments and numerical analysis demonstrated two positive effects on the flow field, when the unsteady jets were active: postponing the mean vortex breakdown position and reattaching the otherwise separated she...
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