Search
Now showing items 11-20 of 173
Safety-aware model-based reinforcement learning using barrier transformation
(2021-05)
The ability to learn and execute optimal control policies safely is critical to the realization of complex autonomy, especially where task restarts are not available and/or when the systems are safety-critical. Safety ...
Impact of vibrations on mobile infrasound sensing and the development of a custom sensor package
(2023-05)
Acoustic frequencies below 20 Hz, referred to as "infrasound", are emitted by various phenomena. Events such as volcanoes, tornadoes, earthquakes, industrial processes, detonations, and bolides, can be analyzed via the ...
Design and evaluation of a thermal nozzle for small-scale turbojets
(2022-05)
This paper presents the design and evaluation of a thermal nozzle for small-scale turbojets. Historically, small-scale turbojets have suffered from poor thermal efficiency and thrust specific fuel consumption (TSFC). This ...
Computational analysis of sweeping jet actuator using dynamic mode decomposition
(2022-12)
A sweeping jet actuator (SJA) is a self-sustaining, periodically oscillating device without involving any moving parts. SJA requires only pressurized fluid at the inlet to transfer momentum via the Coanda effect. As an ...
Empirical indicated loss analysis of a semi-hermetic light-commercial spool compressor
(2021-05)
An analysis of the indicated losses is presented for a semi-hermetic, light-commercial, prototype, spool compressor. The spool compressor prototype was instrumented with five high-speed pressure sensors, three in the ...
Design and analysis of Bellwether: A flying wing featuring the bell-shaped spanload
(2021-05)
This body of work details the design and analysis, as well as discussion of requirements for eventual fabrication and flight testing, of a flying-wing aircraft. The design presented is focused primarily on matching the ...
Characterization of cavity wakes
(2011-07)
Scope and Method of Study: This research focused on flow over deep cavities at subsonic speeds with emphasis on the wake downstream of the cavity. Cavity wake behaviors have not been studied in detail and are a major concern ...
Wound-on-tension of winders with nip rollers
(2016-12)
Roll-to-roll (R2R) manufacturing is widely used to create products from traditional web materials such as plastic webs, metal foils, to the recent printed and flexible electronics. Winding or rewinding is a critical component ...
Quantitative analysis of positive-displacement compressor models tested in extrapolation scenarios
(2022-12)
Testing and evaluation of select semi-empirical compressor models is carried out to quantify performance in modulation (variable speed), extrapolation, and additionally, variable superheat scenarios. Three representative ...
Design and analysis of feedback and feedforward control systems for web tension in roll-to-roll manufacturing
(2015-05)
In Roll-to-Roll (R2R) manufacturing, efficient transport of flexible materials (webs) on rollers requires simultaneous control of web speed and tension. Webs experience disturbing forces during transport due to nonideal ...