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New measurements of optical aberrations caused by a compressible subsonic turbulent boundary layer are presented. These new measurements are based on more-accurate Malley Probe measurements made possible by developing new windtunnel test sections that greatly reduced vibration corruption that imprints itself on the Malley Probe's small-aperture, probe-beam deflection-angles. These new measurements give more-accurate levels of optical distortions for laser propagation through boundary layers, lowering previously-obtained values by ~ 30%. Using a similarity analysis based on these new measurements, a rigorous approach of extracting boundary-layer-related optical information from partially corrupted spectra is proposed and demonstrated by applying it to previously-obtained, vibration-corrupted measurements. Optical spanwise and streamwise length scales for a boundary layer are also presented and these statistical data is used to develop a method of creating realizations of 2-D wavefronts.

Primary care physicians have become increasingly reluctant to refer children for tonsillectomy and adenoidectomy (T and A) during the past years while antimicrobial therapy for pharyngotonsillitis and otitis media has become more common. Consequently, more children retain tonsils and adenoids throughout the childhood years. Airway compromise from adenotonsillar hypertrophy is reported in 11 cases — 8 with insidious onset, 3 with acute onset. Typical symptoms occurring during sleep include snoring, snorting, enuresis and obstructive apnea. Daytime symptoms include hyponasal speech, oral respiration and morning cephalgia. Methods of assessing children with adenotonsillar hypertrophy and airway compromise included polysomnography and acoustic analysis of respiratory sounds. It appears that airway compromise from adenotonsillar hypertrophy is more common now that fewer children are undergoing T and A, is being more commonly recognized because of improved methods of assessment, or both.

Aero-optical environment of the supersonic flow in Trisonic Gasdynamic Facility (TGF) wind tunnel at Wright-Patterson AFB was experimentally measured using a high-speed wavefront sensor. Temporally-and spatially-resolved wavefronts were collected at a range of Mach numbers between 1.5 and 3.0 and the range of Reynolds numbers between 1 and 4 million per foot. Several data reduction techniques, including multi-point spectral crosscorrelation method, were introduced to analyze results and important statistical information about the turbulent boundary layer was extracted and discussed. A novel method was presented for using the frozen flow assumption to recover time-resolved wavefront measurements from spatially resolved 2-D wavefronts that are under-sampled in time. The criteria for using this technique were discussed in detail.

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