"The initial concept vehicle uses gas turbine technology to generate electricity to power six electric propulsors specially designed to have a low noise profile," the company said, adding the design used its existing M250 gas turbine.
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Today, in addition to many of its Navy projects, the facility tunnel-based research has expanded into pumps for the Space Shuttle, advanced propulsors for ships, heating and cooling systems, artificial heart valves, vacuum cleaner fans, and other pumps and propulsors related products.
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The proposed main power units were to be 4 40,000hp gas turbine engines driving water jet propulsors. The 3000-ton ship development contract was canceled in 1980.
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The dorsal and anal fins' roles as propulsors during escape response suggest that the size of the fins could lead to an evolutionary advantage when escaping predators.
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In contrast to a traditional bladed propeller, the Virginia class uses pump-jet propulsors (built by BAE Systems), originally developed for the Royal Navy's s. The propulsor significantly reduces the risks of cavitation, and allows quieter operation.
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The machinery spaces of Zuiderdam are vast and stretch along with two of its lowest decks for the most part of the vessel. MS Zuiderdam is powered by a CODAG propulsion system encompassing five (three 16-cylinder and two 12-cylinder) Sulzer ZAV40S diesel engines (built under license by Grandi Motori Trieste, now owned by Wärtsilä, in Trieste, Italy) and a GE LM2500 Gas Turbine. Zuiderdam was the first Holland America Line ship to use a CODAG propulsion arrangement, a GE LM2500 turbine or ABB Azipod propulsors. It is propelled by two 17.62 MW, 160 rpm synchronous freshwater-cooled ABB Azipod propulsors.
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Sharpe (ed.), Jane's Fighting Ships 1998–99, p. 26 Top speed was , with a range of at . Two electric auxiliary propulsors were used for close manoeuvring, with a top speed of . Standard ship's company was 184, including 15 officers, but excluding the flight crew for the embarked helicopters.
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Components such as clutches or gearboxes may be needed to connect the motor to axles, wheels, or propellers. Biological propulsion systems use an animal's muscles as the power source, and limbs such as wings, fins or legs as the propulsors. A technological/biological system may use human, or trained animal, muscular work to power a mechanical device.
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Queen Mary 2s power plant comprises four sixteen-cylinder Wärtsilä 16V46CR EnviroEngine marine diesel engines, generating a combined at 514 rpm, and two General Electric LM2500+ gas turbines, provide a further ; these drive electric generators, which in turn provide the power to drive four Alstom electrical motors located inside the podded propulsors (and thus entirely outside the vessel's hull). Such an arrangement, known as integrated electric propulsion (IEP), provides for economical cruising at low speed combined with an ability to sustain much higher speeds when required, and has been common in naval vessels for several decades. The propulsors are Rolls- Royce Mermaid azimuth thruster type podded propulsion units, each with one forward-facing low-vibration propeller with separately bolted blades. The forward pair of thrusters is fixed, but the aft pair can swivel through 360°, removing the need for a rudder.
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Her service speed in open water is and bollard pull 32 tons. In addition to the four Azipod units installed on Arcticaborg and her sister ship, ABB delivered a fifth spare unit, which allowed the company to carry out a complete overhaul for all propulsors, one at a time, without having to dock the ships for extended periods.ABB wins Azipod® service contract. ABB, 9 May 2011.
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Her service speed in open water is and bollard pull 32 tons. In addition to the four Azipod units installed on Georgiy Sedov and her sister ship, ABB delivered a fifth spare unit, which allowed the company to carry out a complete overhaul for all propulsors, one at a time, without having to dock the ships for extended periods.ABB wins Azipod® service contract. ABB, 9 May 2011.
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The German Type 212 submarine was the first series production submarine to use fuel cells for air-independent propulsion. It is powered by nine 34-kilowatt hydrogen fuel cells. Most small modern commercial submarines, that are not expected to operate independently, use batteries that can be recharged by a mother-ship after every dive. Towards the end of the 20th century, some submarines were fitted with pump-jet propulsors, instead of propellers.
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The hull had a hydraulically actuated bow flap to aid planing with a maximum waterborne speed of . Shrouded Honeywell waterjet propulsors are integrated into each side of the hull, which create over 2,800 horsepower of thrust. It was also outfitted with hydraulically actuated chines to cover the tracks while in seafaring mode. The vehicle uses an Ethernet network connected by the Tactical Switch Router, based on the COTS DuraMAR Mobile IP router for its internal and external communications.
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A separate gas engine was used to drive lift fans, and also to power out-drive units that were used for off-cushion slow-speed maneuvering. During the first year of testing, the XR-1 was fitted with more powerful main propulsion and flexible fore and aft seals were tested as well. The XR-1 was also used to test the concept of water-jet propulsion. The ship was modified in 1964 and equipped with gas turbine engines driving the water jet propulsors.
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The RV Triton For a time the Royal Navy toyed with the idea of the trimaran hulled Future Surface Combatant. These would have had a very low acoustic signature. With three blade like hulls these ships would have cut through the water with a minimum of hydrodynamic noise. Radiated mechanical noise would also be minimised by using propulsors powered by a diesel-electric power plant; with the diesels being placed in the superstructure to mechanically isolate them from the water.
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Modern engine room telegraph/remote control handle in Engine Control Room (ECR) on board a merchant ship. ECR Lever is not currently active as the system pictured is in direct bridge control mode. On most modern vessels with direct combustion engines or electric propulsors, the main control handle on the bridge acts as a direct throttle with no intervening engine room personnel. As such, it is regarded under the rules of marine classification societies as a remote control device rather than an EOT, though it is still often referred to by the traditional name.
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Two electric auxiliary propulsors are used for close manoeuvring, with a top speed of . Standard ship's company is 184, including 15 officers, but excluding the flight crew for the embarked helicopters. Original armament for the ship consisted of a Mark 13 missile launcher configured to fire RIM-66 Standard and RGM-84 Harpoon missiles, supplemented by an OTO Melara gun and a Vulcan Phalanx point-defence system. For anti- submarine warfare, two Mark 32 torpedo tube sets are fitted; originally firing the Mark 44 torpedo, the Adelaides later carried the Mark 46 torpedoes.
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Two electric auxiliary propulsors are used for close manoeuvring, with a top speed of . Standard ship's company is 184, including 15 officers, but excluding the flight crew for the embarked helicopters. Original armament for the ship consisted of a Mark 13 missile launcher configured to fire RIM-66 Standard and RGM-84 Harpoon missiles, supplemented by an OTO Melara gun and a Vulcan Phalanx point-defence system. As part of the mid-2000s FFG Upgrade Project, an eight-cell Mark 41 Vertical Launch System was fitted, with a payload of RIM-162 Evolved Sea Sparrow missiles.
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Blue Marlin and her sister ship were owned by Offshore Heavy Transport of Oslo, Norway, from their construction, in April 2000 and November 1999, respectively, until 6 July 2001, when they were purchased by Dockwise. The U.S. Navy hired Blue Marlin from Offshore Heavy Transport to move the destroyer back to the United States after the warship was damaged by Al-Qaeda suicide bombers while anchored in the port of Aden, Yemen. During the latter part of 2003, work done on Blue Marlin boosted her capacity and added two retractable propulsors to improve maneuverability. The ship re-entered service in January 2004.
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Two electric auxiliary propulsors are used for close manoeuvring, with a top speed of . Standard ship's company is 184, including 15 officers, but excluding the flight crew for the embarked helicopters. Original armament for the ship consisted of a Mark 13 missile launcher configured to fire RIM-66 Standard and RGM-84 Harpoon missiles, supplemented by an OTO Melara gun and a Vulcan Phalanx point-defence system.Moore (ed.), Jane's Fighting Ships 1977–78 , p. 25 As part of the mid-2000s FFG Upgrade Project, an eight-cell Mark 41 Vertical Launch System was fitted, with a payload of RIM-162 Evolved Sea Sparrow missiles.
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Two electric auxiliary propulsors were used for close manoeuvring, with a top speed of . The standard ship's company was 184, including 15 officers, but excluding the flight crew for the embarked helicopters. Adelaides Mark 13 launcher, with a dummy Standard missile loaded The original armament for the ship consisted of a Mark 13 missile launcher configured to fire RIM-66 Standard and RGM-84 Harpoon missiles, supplemented by an OTO Melara gun and a Vulcan Phalanx point-defence system. For anti-submarine warfare, two Mark 32 torpedo tube sets were fitted; originally firing the Mark 44 torpedo, the Adelaides later carried the Mark 46 torpedoes.
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When the 1973 oil crisis caused the petroleum price spikes in the early 1970s, interest in propfans soared, and NASA-funded research began to accelerate. The propfan concept was outlined by Carl Rohrbach and Bruce Metzger of the Hamilton Standard division of United Technologies in 1975 and was patented by Rohrbach and Robert Cornell of Hamilton Standard in 1979. Later work by General Electric on similar propulsors was done under the name unducted fan, which was a modified turbofan engine, with the fan placed outside the engine nacelle on the same axis as the compressor blades. During this era, the propeller problems encountered a few decades previously became fixable.
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The machinery spaces aboard Oosterdam are vast and extend along two of its lowest decks for the most part of the vessel. MS Oosterdam is powered by a CODAG propulsion system encompassing five (three 16-cylinder and two 12-cylinder) Sulzer ZAV40S diesel engines (built under license by Grandi Motori Trieste, now owned by Wärtsilä, in Trieste, Italy) and a GE LM2500 gas turbine, making it one of only a handful of merchant vessels that is powered by such an arrangement. It is propelled by two 17.62 MW (23956.53 ps), 160rpm synchronous freshwater-cooled ABB Azipod propulsors. Its two engine rooms are separated by a watertight bulkhead division.
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Sailing in September 2009 with and Off Eilan Donan Castle 2004 She was built by Vosper Thornycroft, in Woolston, Hampshire, and commissioned in 1999. The class was originally named as the Single Role Minehunter and was planned to complement the capabilities of the preceding Hunt class and to be cheaper to build. Sandown-class MCMVs are highly manoeuvrable vessels due to being fitted with Voith-Schneider propulsors allowing rapid turning at slow speeds or whilst stationary. On 24 January 2002, while her divers were searching for a 500 lb bomb in Gibraltar, she was approached by the Spanish patrol boat Conejera, which refused to leave when asked by the crew of , claiming they were in Spanish waters.
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The Jewel class was ordered in September 2003, with an option for two vessels. Later, the option was extended to four vessels. Jewel-class ships have Panamax dimensions, Azipod propulsors and tonnage values of 93,500 GT. The keel of the lead vessel, Norwegian Jewel was laid on 4 June 2004 and was delivered on 4 August 2005; the keel of second vessel, Norwegian Jade (former Pride of Hawaii) was laid on 8 February 2005 and was delivered on 19 April 2006; the third vessel's keel, Norwegian Pearl was laid on 4 October 2005 and was delivered on 28 November 2006; the last vessel's keel, Norwegian Gem was laid on 17 June 2006 and was delivered on 1 October 2007.
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With SSD, steam would drive electric turbogenerators, powered by steam turbines, that would be connected to a non-penetrating electric junction at the aft end of the pressure hull, with a watertight electric motor mounted externally, possibly an Integrated Motor Propulsor arrangement, powering the pump-jet propulsor, although SSD concepts without pump-jet propulsors also exist. More recent data, including an Ohio Replacement scale model displayed at the Navy League’s 2015 Sea-Air- Space Exposition, indicates that the Ohio Replacement will feature a pump-jet propulsor visually similar to the one used on Virginia class. The class will share components from the Virginia class in order to reduce risk and cost of construction.
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Compared to a conventional airship, the hybrid can be made smaller and does not need to carry ballast for altitude control, while compared to a heavier-than-air craft the hybrid requires either a smaller rotor or a shorter runway. Where the dynastat is seen as more promising in the longer-distance passenger and freight roles, the rotastat is anticipated to be more suitable as a "flying crane" able to lift heavy external loads for shorter distances. Some airships employ thrust vectoring, typically using pivoted ducted fan propulsors, to provide additional lift when the engine thrust is no longer needed for forward propulsion. Once airspeed is gained, the craft can use body lift to help carry a load greater than its aerostatic lift capacity alone.
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The company services the merchant, offshore, cruise and ferry, naval, fishing, tugs, yachts and special vessel markets, and the offering includes ship design, main and auxiliary engines, auxiliary power systems, electrical and automation packages, propulsors (such as water jets, thrusters, propellers, and nozzles), seals, bearings, gears, rudders, scrubbers, boilers, and all related services, such as repair, configuration, upgrading, training, maintenance, and environmental services. Customers comprise both shipyards and ship owners. The environmental products range from reduction of air emissions, such as NOx, SOx, CO, and volatile organic compounds (VOCs), to oily waste water treatment and other water systems such as ballast water management systems. Wärtsilä Marine was an important Finnish shipbuilder from 1935 until 1989, building cruiseferries, cruise ships and a large share of the icebreakers of the world.
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By SOLAS standards, these should have been lower on the hull ( above the waterline), but for the sake of appearance as well as to avoid the danger of large waves damaging the boats, Payne convinced SOLAS officials to exempt Queen Mary 2 from this requirement, and the boats are above the waterline. Payne's original intention was for a stern profile with a spoon shape, similar to most previous liners, but the mounting of the propeller pods required a flat transom. The compromise was a Costanzi stern – a combination of the two, which provides the transom required for azimuthal pod propulsors and has better seaholding characteristics in a following swell. In common with many modern ships, Queen Mary 2 has a bulbous bow to reduce drag and thereby increase speed, range, and fuel efficiency.
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Two electric auxiliary propulsors are used for close manoeuvring, with a top speed of . Standard ship's company is 184, including 15 officers, but excluding the flight crew for the embarked helicopters. Darwin test-firing a RIM-24 Tartar missile (not part of the ship's regular armament) from her Mark 13 missile launcher during RIMPAC 86 thumb Original armament for the ship consisted of a Mark 13 missile launcher configured to fire RIM-66 Standard and RGM-84 Harpoon missiles, supplemented by an OTO Melara gun and a Vulcan Phalanx point-defence system. As part of the mid-2000s FFG Upgrade Project, an eight-cell Mark 41 Vertical Launch System was fitted, with a payload of RIM-162 Evolved Sea Sparrow missiles.Australia's Hazard(ous) Frigate Upgrade, in Defense Industry Daily For anti-submarine warfare, two Mark 32 torpedo tube sets are fitted; originally firing the Mark 44 torpedo, the Adelaides later carried the Mark 46, then the MU90 Impact following the FFG Upgrade.
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