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Navy Ohio Replacement (SSBN[X]) Ballistic Missile Submarine Program: Background and Issues for Congress

Description: This report provides background information and potential oversight issues for Congress on the Ohio replacement program (ORP), a program to design and build a new class of 12 ballistic missile submarines (SSBNs) to replace the Navy's current force of 14 Ohio-class SSBNs. This report focuses on the Ohio replacement program as a Navy shipbuilding program.
Date: October 22, 2013
Creator: O'Rourke, Ronald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Navy Force Structure and Shipbuilding Plans: Background and Issues for Congress

Description: This report provides background information and presents potential issues for Congress concerning the Navy's ship force-structure goals and shipbuilding plans. The planned size of the Navy, the rate of Navy ship procurement, and the prospective affordability of the Navy's shipbuilding plans have been matters of concern for the congressional defense committees for the past several years. Decisions that Congress makes on Navy shipbuilding programs can substantially affect Navy capabilities and fu… more
Date: October 18, 2013
Creator: O'Rourke, Ronald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

In-Use and Vehicle Dynamometer Evaluation and Comparison of Class 7 Hybrid Electric and Conventional Diesel Delivery Trucks

Description: This study compared fuel economy and emissions between heavy-duty hybrid electric vehicles (HEVs) and equivalent conventional diesel vehicles. In-use field data were collected from daily fleet operations carried out at a FedEx facility in California on six HEV and six conventional 2010 Freightliner M2-106 straight box trucks. Field data collection primarily focused on route assessment and vehicle fuel consumption over a six-month period. Chassis dynamometer testing was also carried out on one c… more
Date: October 1, 2013
Creator: Burton, J.; Walkowicz, K.; Sindler, P. & Duran, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Statistical Characterization of School Bus Drive Cycles Collected via Onboard Logging Systems

Description: In an effort to characterize the dynamics typical of school bus operation, National Renewable Energy Laboratory (NREL) researchers set out to gather in-use duty cycle data from school bus fleets operating across the country. Employing a combination of Isaac Instruments GPS/CAN data loggers in conjunction with existing onboard telemetric systems resulted in the capture of operating information for more than 200 individual vehicles in three geographically unique domestic locations. In total, over… more
Date: October 1, 2013
Creator: Duran, A. & Walkowicz, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Overcoming the Range Limitation of Medium-Duty Battery Electric Vehicles through the use of Hydrogen Fuel-Cells

Description: Battery electric vehicles possess great potential for decreasing lifecycle costs in medium-duty applications, a market segment currently dominated by internal combustion technology. Characterized by frequent repetition of similar routes and daily return to a central depot, medium-duty vocations are well positioned to leverage the low operating costs of battery electric vehicles. Unfortunately, the range limitation of commercially available battery electric vehicles acts as a barrier to widespre… more
Date: October 1, 2013
Creator: Wood, E.; Wang, L.; Gonder, J. & Ulsh, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Improved Battery Pack Thermal Management to Reduce Cost and Increase Energy Density: Cooperative Research and Development Final Report, CRADA Number CRD-12-499

Description: Under this CRADA NREL will support Creare's project for the Department of Energy entitled 'Improved Battery Pack Thermal Management to Reduce Cost and Increase Energy Density' which involves the development of an air-flow based cooling product that increases energy density, safety, and reliability of hybrid electric vehicle battery packs.
Date: October 1, 2013
Creator: Smith, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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