One of the major quantities of interest for airborne laser systems is the unsteady variation in pointing direction of the beam, or jitter. In airborne laser systems, the beam jitter is usually thought of as sourced from two components. The component of the jitter caused by mechanical vibration of the optical table, optical elements, etc. is called mechanical jitter. The component ...
In this work we examined the aero-optical component of the jitter that results from a forced shear layer. Full 2D wavefronts were collected in Notre Dame's Tri-Sonic facility with the high speed flow set at $M = 0.6$ and the low speed flow set at $M …
Non-intrusive optical approach was used to study the regions of the amplified turbulence inside the externally forced boundary layer. Spatially-temporallyresolved wavefronts in the spanwise direction were collected and analyzed. The external forcing …
A multiple aperture approach for the correction of aero-optical distortions is presented. Measurements were conducted in Notre Dame's Tri-Sonic facility at M = 0.2 at 40kHz with an $Ap/\delta ≈ 6$. In this work we investigated the convective nature …