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Scale Models Of Acoustic Scattering Problems Including Barriers And Sound Absorption, Nan Zhang
Scale Models Of Acoustic Scattering Problems Including Barriers And Sound Absorption, Nan Zhang
Theses and Dissertations--Mechanical Engineering
Scale modeling has been commonly used for architectural acoustics but use in other noise control areas is nominal. Acoustic scale modeling theory is first reviewed and then feasibility for small-scale applications, such as is common in the electronics industry, is investigated. Three application cases are used to examine the viability. In the first example, a scale model is used to determine the insertion loss of a rectangular barrier. In the second example, the transmission loss through parallel tubes drilled through a cylinder is measured and results are compared to a 2.85 times scale model with good agreement. The third example …
The Kentucky Re-Entry Universal Payload System (Krups): Sub-Orbital Flights, James Devin Sparks
The Kentucky Re-Entry Universal Payload System (Krups): Sub-Orbital Flights, James Devin Sparks
Theses and Dissertations--Mechanical Engineering
The Kentucky Re-entry Universal Payload System (KRUPS) is an adaptable testbed for atmosphere entry science experiments, with an initial application to thermal protection systems (TPS). Because of the uniqueness of atmospheric entry conditions that ground testing is unable to replicate, scientists principally rely on numerical models for predicting entry conditions. The KRUPS spacecraft, developed at the University of Kentucky, provides an inexpensive means of obtaining validation data to verify and improve these models.
To increase the technology readiness level (TRL) of the spacecraft, two sub-orbital missions were developed. The first mission, KUDOS, launched August 13th, 2017 on a Terrier-Improved Malamute …