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Schwartzkopff Torpedo
The Schwartzkopff torpedo was a torpedo manufactured in the late 19th century by the German firm ''Eisengießerei und Maschinen-Fabrik von L. Schwartzkopff'', later known as Berliner Maschinenbau, based on the Whitehead design. Unlike the Whitehead torpedo, which was manufactured out of steel, the Schwartzkopff was made out of bronze, enhancing corrosion resistance. Design In 1866 Robert Whitehead, working on a design by Giovanni Luppis, perfected what came to be known as the Whitehead torpedo. Whitehead's Fiume torpedo works then became a meeting place for business associates and potential customers. One such visitor was Louis Victor Robert Schwartzkopff, the owner of the German firm Berliner Maschinenbau. On the last night of Schwartzkopff's visit, a disturbance had reportedly taken place in the plant's drawing room. In the morning, it was discovered that someone had broken in and stolen a set of torpedo plans. Whitehead maintained that Schwartzkopff had nothing to do with t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-surface Warfare
Anti-surface warfare (ASuW or ASUW) is the branch of naval warfare concerned with the suppression of surface combatants. More generally, it is any weapons, sensors, or operations intended to attack or limit the effectiveness of an adversary's surface ships. Before the adoption of the submarine and naval aviation, all naval warfare consisted of anti-surface warfare. The distinct concept of an anti-surface warfare capability emerged after World War II, and literature on the subject as a distinct discipline is inherently dominated by the dynamics of the Cold War. Categories of anti-surface warfare Anti-surface warfare can be divided into four categories based on the platform from which weapons are launched: * Air (or aviation): Anti-surface warfare conducted by aircraft. Historically, this was conducted primarily through level- or dive-bombing, strafing runs or air-launching torpedoes (and in some cases by suicide attacks). Today, air ASuW is generally conducted by stand-off att ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bronze
Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals, such as phosphorus, or metalloids such as arsenic or silicon. These additions produce a range of alloys that may be harder than copper alone, or have other useful properties, such as ultimate tensile strength, strength, ductility, or machinability. The three-age system, archaeological period in which bronze was the hardest metal in widespread use is known as the Bronze Age. The beginning of the Bronze Age in western Eurasia and India is conventionally dated to the mid-4th millennium BCE (~3500 BCE), and to the early 2nd millennium BCE in China; elsewhere it gradually spread across regions. The Bronze Age was followed by the Iron Age starting from about 1300 BCE and reaching most of Eurasia by about 500 BCE, although bronze continued to be much more widely used than it is in mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Weihaiwei
The Battle of Weihaiwei (Japanese: was a battle of the First Sino-Japanese War. It took place between 20 January and 12 February 1895, in Weihai, Shandong Province, China, between the forces of Japan and Qing China. In early January 1895, the Japanese landed forces in eastern Shandong positioning forces behind the Chinese naval base at Weihaiwei. Through a well-coordinated offensive of both naval and land forces, the Japanese destroyed the forts and sank much of the Chinese fleet. With the Shandong and Liaoning peninsulas under Japanese control, the option for a pincer attack against the Chinese capital, Beijing, was now a possibility. This strategic threat forced the Chinese to sue for peace and led to the war's end in April 1895. Background Following its victory at the Battle of Lushunkou on 21 November 1894, the next strategic objective of the Japanese campaign was to neutralize the Qing naval base at Weihaiwai on Shandong Peninsula. This would give Japan total control o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Yalu River (1894)
The Battle of the Yalu River (; ja, 黄海海戦, translit=Kōkai-kaisen; ) was the largest naval engagement of the First Sino-Japanese War, and took place on 17 September 1894, the day after the Japanese victory at the land Battle of Pyongyang. It involved ships from the Imperial Japanese Navy and the Chinese Beiyang Fleet. The battle is also known by a variety of names: Battle of Haiyang Island, Battle of Dadonggou, Battle of the Yellow Sea and Battle of Yalu, after the geographic location of the battle, which was in the Yellow Sea off the mouth of the Yalu River and not in the river itself. There is no agreement among contemporary sources on the exact numbers and composition of each fleet, but both were of a similar size, and the battle is considered to be one of the Imperial Japanese Navy's greatest victories. Background Japan's strategy Japan's initial strategy was to gain command of the sea, which was critical to its operations in Korea. Command of the sea would allow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atmosphere (unit)
The standard atmosphere (symbol: atm) is a unit of pressure defined as Pa. It is sometimes used as a ''reference pressure'' or ''standard pressure''. It is approximately equal to Earth's average atmospheric pressure at sea level. History The standard atmosphere was originally defined as the pressure exerted by 760 mm of mercury at and standard gravity (''g''n = ). It was used as a reference condition for physical and chemical properties, and was implicit in the definition of the Celsius temperature scale, which defined as the boiling point of water at this pressure. In 1954, the 10th General Conference on Weights and Measures (CGPM) adopted ''standard atmosphere'' for general use and affirmed its definition of being precisely equal to dynes per square centimetre (). This defined both temperature and pressure independent of the properties of particular substance. In addition, the CGPM noted that there had been some misapprehension that it "led some physicists to believe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internal Pressure
Internal pressure is a measure of how the internal energy of a system changes when it expands or contracts at constant temperature. It has the same dimensions as pressure, the SI unit of which is the pascal. Internal pressure is usually given the symbol \pi_T. It is defined as a partial derivative of internal energy with respect to volume at constant temperature: \pi _T = \left ( \frac \right )_T Thermodynamic equation of state Internal pressure can be expressed in terms of temperature, pressure and their mutual dependence: \pi_T = T \left ( \frac \right )_V - p This equation is one of the simplest thermodynamic equations. More precisely, it is a thermodynamic property relation, since it holds true for any system and connects the equation of state to one or more thermodynamic energy properties. Here we refer to it as a "thermodynamic equation of state." : Perfect gas In a perfect gas, there are no potential energy interactions between the particles, so any change in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schwartzkopff Torpedo General Profile The Schwartzkopff Torpedo U
{{disambiguation, surname ...
Schwartzkopff may refer to: *Schwartzkopff-Eckhardt II bogie, a mechanical device * L. Schwartzkopff, a German locomotive manufacturer, later Berliner Maschinenbau AG *Schwartzkopff torpedo, a series of torpedoes in use at least 1873-1900, made by Berliner Maschinenbau AG People with the surname *Louis Victor Robert Schwartzkopff (1825–1892), German businessman See also *Schwarzkopf (other) Schwarzkopf ("black head" in German) may refer to: Companies * Hans Schwarzkopf GmbH, a beauty care company * Schwarzkopf & Schwarzkopf Verlag, a German publishing house Mountains * Schwarzkopf (Bavarian Forest), a mountain in Bavaria, Germa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Sydney Morning Herald
''The Sydney Morning Herald'' (''SMH'') is a daily compact newspaper published in Sydney, New South Wales, Australia, and owned by Nine. Founded in 1831 as the ''Sydney Herald'', the ''Herald'' is the oldest continuously published newspaper in Australia and "the most widely-read masthead in the country." The newspaper is published in compact print form from Monday to Saturday as ''The Sydney Morning Herald'' and on Sunday as its sister newspaper, '' The Sun-Herald'' and digitally as an online site and app, seven days a week. It is considered a newspaper of record for Australia. The print edition of ''The Sydney Morning Herald'' is available for purchase from many retail outlets throughout the Sydney metropolitan area, most parts of regional New South Wales, the Australian Capital Territory and South East Queensland. Overview ''The Sydney Morning Herald'' publishes a variety of supplements, including the magazines ''Good Weekend'' (included in the Saturday edition of ''Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compressed Air
Compressed air is air kept under a pressure that is greater than atmospheric pressure. Compressed air is an important medium for transfer of energy in industrial processes, and is used for power tools such as air hammers, drills, wrenches, and others, as well as to atomize paint, to operate air cylinders for automation, and can also be used to propel vehicles. Brakes applied by compressed air made large railway trains safer and more efficient to operate. Compressed air brakes are also found on large highway vehicles. Compressed air is used as a breathing gas by underwater divers. It may be carried by the diver in a high pressure diving cylinder, or supplied from the surface at lower pressure through an air line or diver's umbilical. Similar arrangements are used in breathing apparatus used by firefighters, mine rescue workers and industrial workers in hazardous atmospheres. In Europe, 10 percent of all industrial electricity consumption is to produce compressed air—amountin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pendulum-and-hydrostat Control
Pendulum-and-hydrostat control is a control mechanism developed originally for depth control of the Whitehead torpedo. It is an early example of what is now known as proportional and derivative control. The hydrostat is a mechanism that senses pressure; the torpedo's depth is proportional to pressure. However, with only a hydrostat controlling the depth fins in a negative feedback loop, the torpedo tends to oscillate around the desired depth rather than settling to the desired depth. The addition of a pendulum allows the torpedo to sense the pitch of the torpedo. The pitch information is combined with the depth information to set the torpedo's depth control fins. The pitch information provides a damping term to the depth control response and suppresses the depth oscillations. Operation In control theory the effect of the addition of the pendulum can be explained as turning the simple proportional controller into a proportional-derivative controller since the depth keeping is not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Victor Robert Schwartzkopff
Louis Victor Robert Schwartzkopff (5 June 1825 - 7 March 1892) was a German industrialist and founder of the Berliner Maschinenbau (BMAG) mechanical engineering company, chiefly known as manufacturer of steam locomotives. Life Louis Schwartzkopff was born in Magdeburg, then capital of the Prussian province of Saxony. Between 1831 and 1842 he attended the grammar school in Magdeburg as well as the trade school there, where he, together with Carl Wilhelm Siemens, studied mathematics under Carl’s brother, Werner von Siemens. From 1842 to 1845 Schwartzkopff attended the trade institute (''Gewerbeinstitut'') founded by Wilhelm Beuth in Berlin. After that he did his practical training at the firm of Borsig, where he got to know August Borsig personally. Schwartzkopff finished his training with a six-month post as an engine driver on the Berlin-Hamburg Railway. Between 1847 and 1851 he was the chief mechanical engineer (''Maschinenmeister'') of the Magdeburg-Wittenberge Railway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corpus Separatum (Fiume)
''Corpus separatum'', a Latin term meaning " separated body", refers to the status of the City of Fiume (modern Rijeka, Croatia) while given a special legal and political status different from its environment under the rule of the Kingdom of Hungary. Formally known as City of Fiume and its District ( hu, Fiume város és kerülete), it was instituted by Empress Maria Theresa in 1779, determining the semi-autonomous status of Fiume within the Habsburg monarchy until the fall of the Austro-Hungarian Empire in 1918. Origins Maria Theresa, with her sovereign decision of 2 October 1776, gave up possession of Fiume, which for a long time was administrated with the adjacent hereditary Inner Austrian fiefs of the Habsburgs within the Holy Roman Empire, and gave it to the Kingdom of Hungary, of which she was also queen, with a view of fostering trade. Since Hungary proper was some away, the city was initially annexed to the Habsburg Kingdom of Croatia, whose territory began east of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
