|
Vosper Limited
Vosper & Company, often referred to simply as Vospers, was a British shipbuilding company based in Portsmouth, England. History The Company was established in 1871 by Herbert Edward Vosper, concentrating on ship repair and refitting work. By the turn of the century, Vosper was prospering as a general-purpose builder of small craft, boilers and marine engines, for which they had made a name for themselves as a producer of reliable designs. In the lean times after World War I, they concentrated mainly on ship repair to survive. By the early 1930s, the company began to concentrate on high speed naval craft, yachts and power boats, for which they would become renowned. In 1936 they became listed as a public company, known as Vosper, Limited, at which time they moved to a new yard at Portchester. They built Sir Malcolm Campbell's water speed record breaking ''Bluebird K4'', reaching 141.74 mph in 1939. Vosper would become famous as the builder of small (60 to 70-foot) un-step ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John I
John I may refer to: People * John I (bishop of Jerusalem) * John Chrysostom (349 – c. 407), Patriarch of Constantinople * John of Antioch (died 441) * Pope John I, Pope from 523 to 526 * John I (exarch) (died 615), Exarch of Ravenna * John I of Naples (died c. 719) * John of Abkhazia (ruled 878/879–880) * John I of Gaeta (died c. 933) * John I Tzimiskes (c. 925 – 976), Byzantine Emperor * John I of Amalfi (died 1007) * John I of Ponthieu (c. 1147 – 1191) * John I (archbishop of Trier) (c. 1140-1212), Archbishop of Trier from 1190 to 1212 * John of England (1166–1216), King of England, Lord of Ireland, Duke of Normandy and Aquitaine and Count of Anjou * John I of Sweden (c. 1201 – 1222) * John of Brienne (c. 1148 – 1237), king of Jerusalem * John I of Trebizond (died 1238) * John I of Dreux (1215–1249) * John I of Avesnes (1218–1257), Count of Hainaut * John of Brunswick, Duke of Lüneburg (c. 1242–1277) * John I, Count of Blois (died 1280) * John I, Duke of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Air Force
The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) and the Royal Naval Air Service (RNAS). Following the Allied victory over the Central Powers in 1918, the RAF emerged as the largest air force in the world at the time. Since its formation, the RAF has taken a significant role in British military history. In particular, it played a large part in the Second World War where it fought its most famous campaign, the Battle of Britain. The RAF's mission is to support the objectives of the British Ministry of Defence (MOD), which are to "provide the capabilities needed to ensure the security and defence of the United Kingdom and overseas territories, including against terrorism; to support the Government's foreign policy objectives particularly in promoting international peace and security". The R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alvand Class Frigate
__NOTOC__ The ''Alvand'' class ( fa, کلاس الوند) or ''Saam'' class ( fa, کلاس سام) was originally a class of four frigates built for the Imperial Iranian Navy. They were renamed after the Iranian Revolution, and served in the Islamic Republic of Iran Navy during Iran-Iraq War. Three still remain in service. A fourth was sunk by the United States Navy, U.S. Navy in 1988. Development and construction The ships were built in the United Kingdom by VT Group, Vosper Ltd and based on their Mark 5 design with the following arms & equipment:Moore, John ''Jane's Fighting Ships, 1974–75'', pub Jane's Publishing Co Ltd, 1975, -page 175. *Anti-surface warfare, ASuW - 1 × quintuple Sea Killer, Sea Killer Mk2 Anti-ship missile, surface-to-surface missile *Anti-aircraft warfare, AAW - 1 × triple Sea Cat surface-to-air missile launcher *Anti-submarine warfare, ASW 1 × 3 barrelled Limbo (weapon), Anti Submarine Mortar Mark 10 Limbo launcher *Guns - 1 × 4.5 inch Mark 8 naval ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
F43 Liberal , in El Dorado, Arkansas
{{Letter-NumberCombDisambig ...
F43 may refer to: Ships * , a ''Niterói''-class frigate of the Brazilian Navy * , a Tribal-class destroyer of the Royal Navy * , a ''Whitby''-class frigate of the Royal Navy * , a ''Talwar''-class frigate of the Indian Navy Other uses * Downtown Airport (Arkansas) Downtown Airport is a city-owned, public-use airport located in El Dorado, a city in Union County, Arkansas, United States. Facilities and aircraft Downtown Airport covers an area of 88 acres (36 ha) at an elevation of 256 feet (78 m) above ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supercavitation
Supercavitation is the use of a cavitation bubble to reduce skin friction drag on a submerged object and enable high speeds. Applications include torpedoes and propellers, but in theory, the technique could be extended to an entire underwater vessel. Physical principle Cavitation is the formation of vapour bubbles in liquid caused by flow around an object. Bubbles form when water accelerates around sharp corners and the pressure drops below the vapour pressure. Pressure increases upon deceleration, and the water generally reabsorbs the vapour; however, vapour bubbles can implode and apply small concentrated impulses that may damage surfaces like ship propellers and pump impellers. The potential for vapour bubbles to form in a liquid is given by the nondimensional cavitation number. It equals local pressure minus vapour pressure, divided by dynamic pressure. At increasing depths (or pressures in piping), the potential for cavitation is lower because the difference between local ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol Proteus
The Bristol Proteus was the Bristol Engine Company's first mass-produced gas turbine engine design, a turboprop that delivered just over 4,000 hp (3,000 kW). The Proteus was a reverse-flow gas turbine. Because the second turbine drove no compressor stages, but only the propeller, this engine was classified as a free-turbine. It powered the Bristol Britannia airliner, small naval patrol craft, hovercraft and electrical generating sets. It was also used to power a land-speed record car, the Bluebird-Proteus CN7. After the merger of Bristol with Armstrong Siddeley the engine became the Bristol Siddeley Proteus, and later the Rolls-Royce Proteus. The Proteus was to have been superseded by the Bristol Orion which would have given a Britannia a 75% increase in power for cruising faster. Design and development The Proteus was to power a very large airliner for use after the war. Design work started in September 1944 with its free turbine and propeller gearbox based on th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol Siddeley
Bristol Siddeley Engines Ltd (BSEL) was a British aero engine manufacturer. The company was formed in 1959 by a merger of Bristol Aero-Engines Limited and Armstrong Siddeley Motors Limited. In 1961 the company was expanded by the purchase of the de Havilland Engine Company and the engine division of Blackburn Aircraft. Bristol Siddeley was purchased by Rolls-Royce Limited in 1966. History Bristol Siddeley Engines Limited was formed by the 1 April 1959 merge of Bristol Aero-Engines and Armstrong Siddeley Motors. These were the aero engine manufacturing companies of the Bristol Aeroplane Company and the Hawker Siddeley Group. The share capital of Bristol Siddeley was held in equal proportions by these two parent organisations. At around the same time Bristol's aircraft manufacturing was being subsumed into the British Aircraft Corporation along with those of English Electric and Vickers-Armstrong. Armstrong Siddeley Motors had been producing aero-engines and motor-cars sinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brave Class Fast Patrol Boat
The Brave-class fast patrol boats were a class of two gas turbine motor torpedo boats (MTBs) that were the last of their type for the Royal Navy (RN) Coastal Forces division. They formed the basis for a series of simpler boats which were widely built for export. At the time of their introduction the Braves were the fastest naval vessels in the world. Brave class The Brave class followed the of convertible motor torpedo boats/gunboats. They were larger than the Dark class, and differed in being powered by gas turbine engines rather than the diesel engines of the Dark class. (Gas turbine propulsion had been tested in the of two experimental fast patrol boats). Three Bristol Proteus engines propelled the Braves to a maximum of . Like the Dark class, the Braves had a mahogany skin over aluminium frame construction. They were built to be able to be used as either motor torpedo boats or motor gun boats. For the former role they had a 40 mm Bofors gun, four torpedoes and two de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metropolitan-Vickers
Metropolitan-Vickers, Metrovick, or Metrovicks, was a British heavy electrical engineering company of the early-to-mid 20th century formerly known as British Westinghouse. Highly diversified, it was particularly well known for its industrial electrical equipment such as generators, steam turbines, switchgear, transformers, electronics and railway traction equipment. Metrovick holds a place in history as the builders of the first commercial transistor computer, the Metrovick 950, and the first British axial-flow jet engine, the Metropolitan-Vickers F.2. Its factory in Trafford Park, Manchester, was for most of the 20th century one of the biggest and most important heavy engineering facilities in Britain and the world. History Metrovick started as a way to separate the existing British Westinghouse Electrical and Manufacturing Company factories from United States control, which had proven to be a hindrance to gaining government contracts during the First World War. In 1917 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bold Class Fast Patrol Boats
In typography, emphasis is the strengthening of words in a text with a font in a different style from the rest of the text, to highlight them. It is the equivalent of prosody stress in speech. Methods and use The most common methods in Western typography fall under the general technique of emphasis through a change or modification of font: ''italics'', boldface and . Other methods include the alteration of LETTER CASE and as well as and *additional graphic marks*. Font styles and variants The human eye is very receptive to differences in "brightness within a text body." Therefore, one can differentiate between types of emphasis according to whether the emphasis changes the " blackness" of text, sometimes referred to as typographic color. A means of emphasis that does not have much effect on blackness is the use of ''italics'', where the text is written in a script style, or ''oblique'', where the vertical orientation of each letter of the text is slanted to the left o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolls-Royce Limited
Rolls-Royce was a British luxury car and later an aero-engine manufacturing business established in 1904 in Manchester by the partnership of Charles Rolls and Henry Royce. Building on Royce's good reputation established with his cranes, they quickly developed a reputation for superior engineering by manufacturing the "best car in the world". The business was incorporated as Rolls-Royce Limited in 1906, and a new factory in Derby was opened in 1908. The First World War brought the company into manufacturing aero-engines. Joint development of jet engines began in 1940, and they entered production. Rolls-Royce has built an enduring reputation for development and manufacture of engines for defence and civil aircraft. In the late 1960s, Rolls-Royce was adversely affected by the mismanaged development of its advanced RB211 jet engine and consequent cost over-runs, though it ultimately proved a great success. In 1971, the owners were obliged to liquidate their business. The useful p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.png "Click for more on -> Bold Class Fast Patrol Boats")
.jpg "Click for more on -> Rolls-Royce Limited")