Now showing items 1-10 of 82
Generator Life and Power Electronics
(American Society of Naval Engineers, 2011-12)
The deleterious effect of full bridge rectifiers on the output of an AC generator deserves attention from the Naval community. The harmonics observed at the stator of the generator not only introduce hysteresis and eddy ...
Use of Anion Exchange Resins for One-Step Processing of Algae from Harvest to Biofuel
Some microalgae are particularly attractive as a renewable feedstock for biodiesel production due to their rapid growth, high content of triacylglycerols, and ability to be grown on non-arable land. Unfortunately, obtaining ...
An alternative architecture and control strategy for hexapod positioning systems to simplify structural design and improve accuracy
Hexapod systems (6 legged Stewart Platforms), offer advantages in accuracy over other positioning systems and are finding applications in numerous telescopes. However, instruments with increased sophistication for modern ...
Wind loading analysis and strategy for deflection reduction on HET wide field upgrade
Wind loading can be a detrimental source of vibration and deflection for any large terrestrial optical telescope. The Hobby-Eberly Telescope* (HET) in the Davis Mountains of West Texas is undergoing a Wide Field Upgrade ...
Effects of high penetration levels of residential photovoltaic generation
Photovoltaic (PV) generation technologies, often deemed a viable solution for reducing greenhouse gases and decreasing electricity demand, have become increasingly prevalent in their deployment. Particular progress in their ...
Design and analysis of the tracker bridge for the Hobby-Eberly Telescope wide field upgrade
A large structural weldment has been designed to serve as the new star tracker bridge for the Wide Field Upgrade to the Hobby-Eberly Telescope at McDonald Observatory in support of the Hobby-Eberly Telescope Dark Energy ...
Dynamic Simulations of a Large High-Frequency Power System
(Society for Modeling & Simulation International, 2011)
Dynamic simulations to assess performance aspects of a large high-frequency power system have been conducted. The analysis uses a model of an 80-MW power system for an all-electric ship. The model, developed in the ...
Design and Demonstration of an Extended Range Hydrogen Fuel Cell Utility Vehicle
This paper discusses the design, build, and demonstration of two hybrid electric fuel cell utility vehicles for a program sponsored by DLA (Defense Logistics Agency). The design emphasis for the utility vehicles was range ...
Electromagnetic Field Effect and Analysis of Composite Structure
The electromagnetic and thermal response of composites subjected to magnetic fields is simulated by solving Maxwell and heat transfer equations simultaneously. The developed analysis accounts for the anisotropic nature of ...
Notional System Report
(Electric Ship Research and Development Consortium, 2014-06-30)