DSumner
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(8/30/05 2:15 am)
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Naval Ogre
For those of you interested in Naval Ogre, here's a few pics and some info on some of the new experimental naval vessels coming on line.
"Sea Jet" AESD
August 27, 2005
The US Navy christened its Advanced Electric Ship Demonstrator (AESD) this week, naming the futuristic ship SEA JET and showing it to the media for the first time. The 133-foot vessel will serve as a model representing a destroyer-size surface ship and will be launched on Lake Pend Oreille, Idaho, where it will be used for test and demonstration of various technologies. An underwater discharge waterjet from Rolls-Royce Naval Marine called AWJ-21, will be among the first technologies tested. It allows vessels to operate in shallow water with increased maneuverability and stealth.
The AWJ-21 is designed to increase ship speed, making hulls sleeker by working without rudders, shafts and propeller struts. Unlike conventional waterjets, the system works completely underwater, reducing noise and surface wake and improving stealth.
The lightweight and compact AWJ-21 allows ships to operate in shallow waters. Its integrated steering and reversing system improves manoeuvrability at low speeds.
Pat Marolda, Rolls-Royce President – Naval, said: "This is a significant milestone in our development of an advanced waterjet technology which offers new parameters in performance, bringing real benefits to the US Navy."
Following demonstration of the AWJ-21, the RIMJET propulsor from General Dynamics Electric Boat will be installed in Sea Jet for evaluation. The RIMJET is a novel type of podded propulsion system that relies on a permanent magnet motor to drive the propellor.
The Chief of Naval Research Rear Admiral Jay M. Cohen delivered the principle address at the christening. The ship’s sponsor is Kathleen Harper, wife of Thurman Harper, vice president of engineering for Rolls-Royce Naval Marine, Inc. In the time-honored Navy tradition, she broke a bottle of champagne across the bow to formally christen the ship "Sea Jet."
Pic - www.gizmag.com/watermark....594406.jpg
"Sea Fighter"
The X-Craft was designed to demonstrate to the US and other navies the versatility of a very high speed, high payload capability vessel which can cross oceans quickly, and operate in shallow coastal waters on missions which include mine counter measures and antisubmarine warfare.
The Littoral Surface Craft-Experimental LSC(X) was developed by the Office of Naval Research and christened Fast Sea Frame Sea Fighter (FSF 1) on 5 February 2005. The X-Craft transformational program is a high-speed, aluminum catamaran consisting of an advanced hull geometry, designed to give the craft speeds of 50 knots or more. Initially, she will be used by ONR for purposes of hydrodynamic experimentation and as a test bed for Hull, Mechanical, and Electrical (HME) concepts for the Navy's new class of warship, Littoral Combat Ship (LCS).
X-Craft is the first vessel that the Navy has designed specifically as a “sea frame,” decoupling hull, mechanical and electrical (HM&E) systems from the mission packages and allowing for a true “plug and fight” mission module capability. Mission flexibility will be demonstrated through interchangeable “mission modules” (standard twenty-foot containers) housed in the X-Craft’s large mission bay. The mission bay will hold up to twelve containers, each with its own dedicated service panel, permitting rapid reconfiguration of the vessel to support a variety of potential missions including battle force protection, mine countermeasures, anti-submarine warfare, amphibious assault support, and logistics/humanitarian support.
Pic - www.globalsecurity.org/mi...6w-193.jpg
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