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Now showing items 51-60 of 103
Design optimization methods for additively manufactured natural convection heatsinks
(2021-12)
With 3-D printing technology becoming more widely available, designs with complex geometries are now feasible to manufacture. The ability to create complex geometries opens many new possibilities in the optimization field. ...
Measurement and magnitude-based system identification of tornado-associated infrasound
(2021-07)
Recent evidence indicates that acoustic waves at frequencies below human hearing (infrasound) are produced during tornadogenesis and continue through the life of a tornado. The currently available tornadic infrasound data ...
Development and evaluation of a 360° differential pressure gust sensor for extreme weather environments
(2022-07)
Measuring rapidly fluctuating high wind speeds and direction in the extreme weather environments of severe storms proves to be a difficult task with current sensors. For example, mechanical anemometers do not provide ...
Integration and evaluation of a 180-kw turboprop engine with a turboelectric ground test rig
(2023-05)
This paper presents the integration of a PBS Aerospace 180-kW turboprop engine with a Cessna 172, four seat, 1,090-kg (2,400-lbf) max takeoff weight aircraft for use as a turboelectric ground test rig. The quickly growing ...
Primary breakup of liquid sheets in crossflow and liquid jets in gaseous coflow
(2022-05)
This thesis discusses the breakup of liquid sheets under the influence of crossflow and the breakup of micro-liquid jets in coflow air. The breakup of liquid jets and sheets is important for many applications, e.g., ...
Evaluation of a dual-mode, turbojet-turboprop engine for unmanned aircraft
(2022-05)
This paper provides experimental feedback on the feasibility of a small-scale, dual-mode turbojet to turboprop engine. The engine used for testing was a KingTech K45-TP. Key parameters focused on for this experiment were ...
Inflow analysis for multi-rotors and the impact on sensor placement
(2021-07)
As the usage of small multi-rotor unmanned aircraft systems (sUAS) continues to grow there is a need to understand the complex flow-field and its interactions with the propellers and the sUAS airframe. It is particularly ...
Predicting constraint point loads for a vehicle towed along a fixed path
(2020-12)
Towing a vehicle along a fixed path is useful in automation processes. Understanding the forces involved while towing a vehicle is critical for the design of the towing system. For aircraft in particular, careful measures ...
Viscoelastic Poisson's ratio of webs
(2020-12)
During web handling operations, the web moves along a processing line, supported by rollers, and is subject to numerous successive processes, for example several printing operations with different colors. Registration ...
Exploring mechanical assonance for impact energy harvesting using acoustic metamaterials
(2020-12)
Acoustic metamaterials are engineered to possess unique dynamic properties that are not commonly found in nature. It has been demonstrated that customizing the characteristics of their local features can help optimize their ...