Electric-Drive Propulsion for U.S. Navy Ships

Electric-Drive Propulsion for U.S. Navy Ships
Author:
Publisher:
Total Pages: 0
Release: 2000
Genre:
ISBN:

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.

Electric-Drive Propulsion for U.S. Navy Ships

Electric-Drive Propulsion for U.S. Navy Ships
Author: Ronald O'Rourke
Publisher:
Total Pages: 0
Release: 2000
Genre: Destroyers (Warships)
ISBN:

This report provides background information and discusses issues for Congress regarding the use of electric-drive propulsion technology (as opposed to traditional mechanical-drive technology) on U.S. Navy ships. As a result of technological developments over the last few years, electric-drive technology has matured to the point where the Navy has selected it 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 Propulsion for U.S. Navy Ships

Electric-drive Propulsion for U.S. Navy Ships
Author: Ronald O'Rourke
Publisher:
Total Pages: 65
Release: 2000
Genre: Destroyers (Warships)
ISBN:

"This report provides background information and discusses issues for Congress rearding the use of electric-drive propulsion technology (as opposed to traditional mechanical-drive technology) on U.S. Navy Ships"--Introduction.

Electric Drive Propulsion for Ships

Electric Drive Propulsion for Ships
Author: John A. Culver
Publisher:
Total Pages: 7
Release: 2006
Genre: Ship propulsion
ISBN: 9781412083683

Electric drive ships are returning to the scene after a brief stay out of the maritime field. Now electric drive is returning in Roll-on Roll-off ships, Ferry Boats, Ocean Surveillance ships, Platform Supply Ships and Coast Guard Ice Breakers. Gas turbine generators have a potential of taking over prime movers for electric drive propulsion. Podded electric propulsions (PODS) are being used in some foreign ships. The U.S. Navy is looking at integrating electrical distribution systems with gas turbine generators to create an “all electric ship”. This book is an historical overview of electric drive propulsion in United States ships from 1900 to 2004. This includes ships of the U.S. Navy, Merchant Marine, Coast Guard and Oceanography. The summary is a list which gives the name or class of ship or submarine that have or had electric drive propulsion machinery installed. Each listing gives some details of a ship or class of ship, length, tonnage, and type of electric drive propulsion units and in some cases the shipbuilder and machinery manufacturer. Also, there are block diagrams showing the electric drive arrangement for each class of ship. The historical summary includes ships and submarine from 1900 to the massive build-up of ships with electic drive during World War II and into the slow down of the post war years. Naval Architects, Marine Engineers, shipbuilders, design agents, manufacturers of electric drive machinery, and personnel of the sea services will welcome this book to their library.

Technology for the United States Navy and Marine Corps, 2000-2035

Technology for the United States Navy and Marine Corps, 2000-2035
Author:
Publisher: National Academies
Total Pages: 356
Release: 1997
Genre: History
ISBN:

The future national security environment will present the naval forces with operational challenges that can best be met through the development of military capabilities that effectively leverage rapidly advancing technologies in many areas. The panel envisions a world where the naval forces will perform missions in the future similar to those they have historically undertaken. These missions will continue to include sea control, deterrence, power projection, sea lift, and so on. The missions will be accomplished through the use of platforms (ships, submarines, aircraft, and spacecraft), weapons (guns, missiles, bombs, torpedoes, and information), manpower, materiel, tactics, and processes (acquisition, logistics, and so on.). Accordingly, the Panel on Technology attempted to identify those technologies that will be of greatest importance to the future operations of the naval forces and to project trends in their development out to the year 2035. The primary objective of the panel was to determine which are the most critical technologies for the Department of the Navy to pursue to ensure U.S. dominance in future naval operations and to determine the future trends in these technologies and their impact on Navy and Marine Corps superiority. A vision of future naval operations ensued from this effort. These technologies form the base from which products, platforms, weapons, and capabilities are built. By combining multiple technologies with their future attributes, new systems and subsystems can be envisioned. Technology for the United States Navy and Marine Corps, 2000-2035 Becoming a 21st-Century Force: Volume 2: Technology indentifies those technologies that are unique to the naval forces and whose development the Department of the Navy clearly must fund, as well as commercially dominated technologies that the panel believes the Navy and Marine Corps must learn to adapt as quickly as possible to naval applications. Since the development of many of the critical technologies is becoming global in nature, some consideration is given to foreign capabilities and trends as a way to assess potential adversaries' capabilities. Finally, the panel assessed the current state of the science and technology (S&T) establishment and processes within the Department of the Navy and makes recommendations that would improve the efficiency and effectiveness of this vital area. The panel's findings and recommendations are presented in this report.

Shipboard Propulsion, Power Electronics, and Ocean Energy

Shipboard Propulsion, Power Electronics, and Ocean Energy
Author: Mukund R. Patel
Publisher: CRC Press
Total Pages: 392
Release: 2012-02-17
Genre: Science
ISBN: 1439888507

Shipboard Propulsion, Power Electronics, and Ocean Energy fills the need for a comprehensive book that covers modern shipboard propulsion and the power electronics and ocean energy technologies that drive it. With a breadth and depth not found in other books, it examines the power electronics systems for ship propulsion and for extracting ocean energy, which are mirror images of each other. Comprised of sixteen chapters, the book is divided into four parts: Power Electronics and Motor Drives explains basic power electronics converters and variable-frequency drives, cooling methods, and quality of power Electric Propulsion Technologies focuses on the electric propulsion of ships using recently developed permanent magnet and superconducting motors, as well as hybrid propulsion using fuel cell, photovoltaic, and wind power Renewable Ocean Energy Technologies explores renewable ocean energy from waves, marine currents, and offshore wind farms System Integration Aspects discusses two aspects—energy storage and system reliability—that are essential for any large-scale power system This timely book evolved from the author’s 30 years of work experience at General Electric, Lockheed Martin, and Westinghouse Electric and 15 years of teaching at the U.S. Merchant Marine Academy. As a textbook, it is ideal for an elective course at marine and naval academies with engineering programs. It is also a valuable reference for commercial and military shipbuilders, port operators, renewable ocean energy developers, classification societies, machinery and equipment manufacturers, researchers, and others interested in modern shipboard power and propulsion systems. The information provided herein does not necessarily represent the view of the U.S. Merchant Marine Academy or the U.S. Department of Transportation. This book is a companion to Shipboard Electrical Power Systems (CRC Press, 2011), by the same author.