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Integration Of Energy Efficient Propulsion Systems For Future Us Navy Vessels April 6 2006 109 2 Hearing
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Book Synopsis Integration of Energy Efficient Propulsion Systems For Future U.S. Navy Vessels, April 6, 2006, 109-2 Hearing, * by : United States. Congress. House. Committee on Armed Services
Download or read book Integration of Energy Efficient Propulsion Systems For Future U.S. Navy Vessels, April 6, 2006, 109-2 Hearing, * written by United States. Congress. House. Committee on Armed Services and published by . This book was released on 2007* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Integration of Energy Efficient Propulsion Systems for Future U.S. Navy Vessels by : United States. Congress. House. Committee on Armed Services. Projection Forces Subcommittee
Download or read book Integration of Energy Efficient Propulsion Systems for Future U.S. Navy Vessels written by United States. Congress. House. Committee on Armed Services. Projection Forces Subcommittee and published by . This book was released on 2006 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report of The Activities of The Committee on Armed Services for the 109th Congress, December 15, 2006, 109-2 House Report 109-731 by :
Download or read book Report of The Activities of The Committee on Armed Services for the 109th Congress, December 15, 2006, 109-2 House Report 109-731 written by and published by . This book was released on 2007 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis INTEGRATION OF ENERGY EFFICIENT PROPULSION SYSTEMS FOR FUTURE,... HEARING... COMMITTEE ON ARMED SERVICES, U.S. HOUSE OF REPS.... 109TH CONGRESS, 2ND SESSION by :
Download or read book INTEGRATION OF ENERGY EFFICIENT PROPULSION SYSTEMS FOR FUTURE,... HEARING... COMMITTEE ON ARMED SERVICES, U.S. HOUSE OF REPS.... 109TH CONGRESS, 2ND SESSION written by and published by . This book was released on 2007* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Navy Ship Propulsion Technologies by :
Download or read book Navy Ship Propulsion Technologies written by and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: General strategies for reducing the Navy's dependence on oil for its ships include reducing energy use on Navy ships; shifting to alternative hydrocarbon fuels; shifting to more reliance on nuclear propulsion; and using sail and solar power. Reducing energy use on Navy ships. A 2001 study concluded that fitting a Navy cruiser with more energy-efficient electrical equipment could reduce the ship's fuel use by 10% to 25%. The Navy has installed fuel-saving bulbous bows and stern flaps on many of its ships. Ship fuel use could be reduced by shifting to advanced turbine designs such as an intercooled recuperated (ICR) turbine. Shifting to integrated electric-drive propulsion can reduce a ship's fuel use by 10% to 25%; some Navy ships are to use integrated electric drive. Fuel cell technology, if successfully developed, could reduce Navy ship fuel use substantially. Alternative hydrocarbon fuels. Potential alternative hydrocarbon fuels for Navy ships include biodiesel and liquid hydrocarbon fuels made from coal using the Fischer-Tropsch (FT) process. A 2005 Naval Advisory Research (NRAC) study and a 2006 Air Force Scientific Advisory Board both discussed FT fuels. Nuclear propulsion. Oil-fueled ship types that might be shifted to nuclear propulsion include large-deck amphibious assault ships and large surface combatants (i.e., cruisers and destroyers). A 2005 "quick look" analysis by the Naval Nuclear Propulsion Program concluded that total life-cycle costs for nuclearpowered versions of these ships would equal those of oil-fueled versions when oil reaches about $70 and $178 per barrel, respectively. Sail and solar propulsion. Kite-assisted propulsion might be an option for reducing fuel use on Navy auxiliaries and DOD sealift ships. Two firms are now offering kite-assist systems to commercial ship operators. Solar power might offer some potential for augmenting other forms of shipboard power, perhaps particularly on Navy auxiliaries and DOD sealift ships. Legislative activity. Section 128 of the FY2007 defense authorization bill (H.R. 5122) states that "it is the sense of Congress that the Navy should make greater use of alternative technologies, including nuclear power, as a means of vessel propulsion for its future fleet of surface combatants." The Senate report (S.Rept. 109-292 of July 25, 2006) on the FY2007 defense appropriations bill (H.R. 5631) encourages DOD to continue exploring FT fuels and requires a report on synthetic fuels. Section 214 of the conference report (H.Rept. 109-413 of April 6, 2006) on the Coast Guard and Maritime Transportation Act of 2006 (H.R. 889) requires the Coast Guard to conduct a feasibility study on using biodiesel fuel in new and existing Coast Guard vehicles and vessels. Section 130 of the conference report (H.Rept. 109-360 of December 18, 2006) on the FY2006 defense authorization act (H.R. 1815, P.L. 109-163 of January 6, 2006) requires the Navy to submit a report by November 1, 2006, on alternative propulsion methods for surface combatants and amphibious warfare ships. This report will be updated as events warrant.
Book Synopsis Legislative Calendar by : United States. Congress. House. Committee on Armed Services
Download or read book Legislative Calendar written by United States. Congress. House. Committee on Armed Services and published by . This book was released on 2009 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CIS Annual written by and published by . This book was released on 2007 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Electric Propulsion by : Jean L Broge
Download or read book Advances in Electric Propulsion written by Jean L Broge and published by SAE International. This book was released on 2017-05-18 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aviation propulsion development continues to rely upon fossil fuels for the vast majority of commercial and military applications. Until these fuels are depleted or abandoned, burning them will continue to jeopardize air quality and provoke increased regulation. With those challenges in mind, research and development of more efficient and electric propulsion systems will expand. Fuel-cell technology is but one example that addresses such emission and resource challenges, and others, including negligible acoustic emissions and the potential to leverage current infrastructure models. For now, these technologies are consigned to smaller aircraft applications, but are expected to mature toward use in larger aircraft. Additionally, measures such as electric/conventional hybrid configurations will ultimately increase efficiencies and knowledge of electric systems while minimizing industrial costs. Requirements for greater flight time, stealth characteristics, and thrust-to-power ratios adds urgency to the development of efficient propulsion methods for applications such as UAVs, which looks to technologies such as asymmetrical capacitors to enhance electric propulsion efficiency. This book will take the reader through various technologies that will enable a more-electric aircraft future, as well as design methods and certification requirements of more-electric engines.
Book Synopsis Electric-Drive Propulsion for U.S. Navy Ships by :
Download or read book Electric-Drive Propulsion for U.S. Navy Ships written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Navy in January 2000 selected electric-drive propulsion technology for use on its planned next-generation DD-21 land-attack destroyer and is considering it for use on other kinds of Navy ships as well. Electric drive poses issues for Congress concerning its costs, benefits and risks, and how the technology should be integrated into the DD-21 program or other ship-acquisition programs. Several foreign countries are developing or using electric drive in commercial or naval ships. The U.S. Navy's electric-drive development effort centers on the Integrated Power System (IPS) program. Several private-sector firms in the United States are now pursuing electric drive for the U.S. Navy market. Electric drive offers significant anticipated benefits for U.S. Navy ships in terms of reducing ship life-cycle cost, increasing ship stealthiness, payload, survivability, and power available for non-propulsion uses, and taking advantage of a strong electrical power technological and industrial base. Potential disadvantages include higher nearterm costs, increased technical risk, increased system complexity, and less efficiency in full-power operations. The current scarcity of precise and systematic estimates of the costs and benefits of electric drive makes it difficult for policymakers to assess the relative cost-effectiveness of differing technical approaches to achieving electric drive. Some of the risks involved in developing electric-drive technology have been mitigated by the successful development of electric-drive technology for commercial ships; estimates of the amount of remaining risk vary. The Navy has stated that developing common electric-drive components is feasible for several kinds of Navy ships and that pursuing electric drive technology in the form of a common family of components could have advantages for the Navy. The potential savings associated with a common system are difficult to estimate, but could be substantial. The concept of developing a common system or family of components poses issues for policymakers concerning the extent of commonality across electric-drive-equipped Navy ships and the use of competition in the development and procurement of electric-drive technology. Much of the debate over electric drive concerns electric motors. The five basic types in question - synchronous motors, induction motors, permanent magnet motors, superconducting synchronous motors, and superconducting homopolar motors - differ in terms of their technological maturity, power-density, and potential applicability to different Navy ship types. The Navy's decision to use electric drive on the DD-21 raises several potential issues concerning the acquisition strategy for the ship. Electric drive could be installed on Virginia (SSN-774) class submarines procured in FY2010, according to the Navy. Other candidates for electric drive include the Navy's planned TADC(X) auxiliary dry cargo ships, the Navy's planned joint command and control (JCC[X]) ships, the second through fifth LHA replacement ships, future aircraft carriers, and possibly the new cutters to be procured under the Coast Guard Deepwater project.
Author :United States Government Accountability Office Publisher :Createspace Independent Publishing Platform ISBN 13 :9781720358893 Total Pages :34 pages Book Rating :4.3/5 (588 download)
Book Synopsis Propulsion Systems for Navy Ships and Submarines by : United States Government Accountability Office
Download or read book Propulsion Systems for Navy Ships and Submarines written by United States Government Accountability Office and published by Createspace Independent Publishing Platform. This book was released on 2018-06-16 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Propulsion Systems for Navy Ships and Submarines
Book Synopsis Naval Ship Propulsion and Electric Power Systems Selection for Optimal Fuel Consumption by : Emmanouil Sarris
Download or read book Naval Ship Propulsion and Electric Power Systems Selection for Optimal Fuel Consumption written by Emmanouil Sarris and published by . This book was released on 2011 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although propulsion and electric power systems selection is an important part of naval ship design, respective decisions often have to be made without detailed ship knowledge (resistance, propulsors, etc.). Propulsion and electric power systems have always had to satisfy speed and ship-service power requirements. Nowadays, increasing fuel costs are moving such decisions towards more fuel-efficient solutions. Unlike commercial ships, naval ships operate in a variety of speeds and electric loads, making fuel consumption optimization challenging. This thesis develops a flexible decision support tool in Matlab® environment, which identifies the propulsion and ship-service power generation systems configuration that minimizes fuel consumption for any ship based on its operating profile. Mechanical-driven propulsion systems with or without propulsion derived ship-service power generation, separate ship-service systems and integrated power systems are analyzed. Modeling includes hull resistance using the Holtrop-Mennen method requiring only basic hull geometry information, propeller efficiencies using the Wageningen B series and transmission and prime movers fuel efficiencies. Propulsion and ship-service power generation systems configuration is optimized using the genetic algorithm. US Navy's Advanced Surface Ship Evaluation Tool (ASSET) model for the DDG-51 Flight I destroyer was used for modeling validation. Optimal fuel consumption results are compared against the existing configuration for the DDG-51 Flight I destroyer using a representative operating profile.
Book Synopsis Future Ship Powering Options by : Royal Academy of Engineering (Great Britain)
Download or read book Future Ship Powering Options written by Royal Academy of Engineering (Great Britain) and published by . This book was released on 2013 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Analysis, Simulation and Control of Cycloconverter Drives for Ship Propulsion by : Christopher P. Mercer
Download or read book The Analysis, Simulation and Control of Cycloconverter Drives for Ship Propulsion written by Christopher P. Mercer and published by . This book was released on 1996-12-01 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Naval expeditionary forces of the future will require new, technologically advanced, multi-mission surface combatants. The design philosophy for future surface combatants stresses survivability, efficiency, and modularity through the use of a modern open architecture consisting of commercial off the shelf and dual use systems. An integrated propulsion and electrical power generation system which utilizes advanced, commercially viable power electronics and state of the art control and monitoring systems is viewed as the appropriate system for the future surface combatant. This study provides the designing naval engineer with technical background information and design considerations for the application of a cycloconverter drive for ship propulsion in an integrated power system. The cycloconverter is a power electronic circuit which performs a single stage conversion of an ac input voltage at one frequency to an ac output voltage of variable frequency and amplitude. Cycloconverters are generally used for low speed, very large horsepower applications and with suitable closed loop control can develop torque and speed responses suitable for ship propulsion. External performance characteristics and control issues for the cycloconverter are discussed, followed by a time domain computer simulation of an integrated ship propulsion drive utilizing a cycloconverter. From the technical background information, external performance characteristics and computer simulation analysis, the designing naval engineer can make educated decisions on the application of a cycloconverter drive for ship propulsion.
Book Synopsis A New Propulsion System for Ships by : Herman E. Sheets
Download or read book A New Propulsion System for Ships written by Herman E. Sheets and published by . This book was released on 1980 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Executive Summary; Introduction -- Limitation of Existing Propulsion Systems, Trends in Ship Power Requirements, Propeller Configuration, Supercavitating Propellers, Water Jet Propulsion, Integrate Ship and Propeller Into a Single System; The New Propulsion System -- The Hydraulic Axial Flow Transmission, Pump -- Specific Speed and Efficiency, The Inverted Turbine, Integrated Transmission Turbine and Propeller, The Thrust Reaction System, Thrust Reversal, Combined Propulsion Efficiency and Transmission Ratio, The Low Cavitation Pump, Boundary Layer Control on Propeller and Ship, The Total System and Contra-Rotation; The Air Models; The Water Model; Propulsion System Performance; Propulsion Applications and System Improvements; Conclusions -- Proof of Concept, Future Applications and the Total Ship System.
Download or read book The Chinese Navy written by and published by Smashbooks. This book was released on 2012 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis PROPULSION SYSTEM STRUCTURAL INTEGRATION AND ENGINE INTEGRITY- SELECTED PAPERS PRESENTED AT A SYMPOSIUM- AIAA, AERONAUTICAL SYSTEMS DIVISION- U.S.OFFICE OF NAVAL RESEARCH- NASA (NATIONAL AERONAUTICS AND SPACE ADMINISTRATION). by :
Download or read book PROPULSION SYSTEM STRUCTURAL INTEGRATION AND ENGINE INTEGRITY- SELECTED PAPERS PRESENTED AT A SYMPOSIUM- AIAA, AERONAUTICAL SYSTEMS DIVISION- U.S.OFFICE OF NAVAL RESEARCH- NASA (NATIONAL AERONAUTICS AND SPACE ADMINISTRATION). written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lightweight Propulsion Systems for Advanced Naval Ship Applications. Part I. System Studies by : Simion C. Kuo
Download or read book Lightweight Propulsion Systems for Advanced Naval Ship Applications. Part I. System Studies written by Simion C. Kuo and published by . This book was released on 1977 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of system studies as part of a comprehensive study program to evaluate the technological and economic feasibility of utilizing open- and closed-cycle gas turbines integrated with fossil or nuclear heat sources for providing advanced lightweight propulsion power for future Navy capital ship applications. The level of technology considered is that judged by the Contractor to be available during the 1990's. Naval ship types which could benefit from implementing lightweight propulsion systems were selected and characterized, and performance and weight characteristics for selected propulsion machinery components were estimated. Turbomachinery technologies applicable to naval ship propulsion were reviewed, and future advances in crucial technical areas were projected. Eight reference installed power levels between 40,000 and 300,000 shp applicable to the ship types considered were selected. Basic propulsion system arrangements compatible with component capabilities were identified. From the huge number of possible combinations of propulsion system components, arrangements, and power levels for different ship types, a manageable number of practical cases were selected by use of a matrix screening process and subjected to detailed study.
