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Full-Text Articles in Mechanical Engineering
Tholos - Eva Sample Location Calibration Device, James Verheyden, Kat Gipson, Julia Rios, Ben Trust
Tholos - Eva Sample Location Calibration Device, James Verheyden, Kat Gipson, Julia Rios, Ben Trust
Mechanical Engineering
To support NASA’s upcoming Artemis missions, an extravehicular activity (EVA) photometric calibration scale was developed to replace the Apollo-era Gnomon device. The Gnomon was a gimbaled stadia rod mounted on a tripod which provided color and reflectivity photo calibration, vertical orientation, and solar shadow direction, to include in photos of lunar geologic samples and features. With over 50 years of innovation since the first Gnomon deployment on Apollo 11, this redesign of the photometric calibration scale will support NASA’s missions in the modern day. The Tholos™, named after the ancient Greek repository of standardized measures, consists of a quadrupedal design …
Implementation Of A Conrad Probe On A Boundary Layer Measurement System, Charles Rocky Ulk
Implementation Of A Conrad Probe On A Boundary Layer Measurement System, Charles Rocky Ulk
Master's Theses
This thesis presents the design, calibration, and performance evaluation of a type of two-hole pressure probe anemometer known as a Conrad probe, as well as its subsequent implementation on an autonomous, compact boundary layer measurement device and its first application for subsonic in-flight measurements of a swept wing boundary layer. Calibration of the Conrad probe was accomplished using two calibration functions and a non-nulling method for resolving in-plane flow velocity direction and magnitude over a range of ±30 degrees. This approach to calibration and application offered the advantages of rapid data acquisition with lower energy consumption than alternative methods for …