Project 664 Class Torpedo Boat
The Project 664 (NATO reporting name ''Wisla'') class were Polish torpedo boats, designed in Poland in the 1970s. They were one of the few vessels of this size, powered by a gas turbine, and could achieve a great speed. Development In the late 1950s the Polish Navy decided to develop fast torpedo boats of own design, to supplement Soviet-origin project 183 (P-6) class torpedo boats. It was decided to use a gas turbine for propulsion and arm them with four torpedo tubes. Due to lack of previous experience in designing such craft, development was very long. In order to test the technology, a single experimental project 663D torpedo boat was built, ORP ''Błyskawiczny''. Her building started in 1961 and she entered service in 1965. Trials revealed some faults, and further development work was carried out. The result were the boats of the final project 664. They shared a similar silhouette, hull shape and a propulsion fit of 4 diesel and a TM-1 gas turbine engine in a CODAG arrangeme ...
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ORP Sprawny
ORP may refer to: * Okręt Rzeczypospolitej Polskiej, a Polish Navy ship prefix * Operational Ration Pack, UK military * Orpington railway station, Bromley, England * O'Reilly Raceway Park at Indianapolis * Oxidation reduction potential Redox potential (also known as oxidation / reduction potential, ''ORP'', ''pe'', ''E_'', or E_) is a measure of the tendency of a chemical species to acquire electrons from or lose electrons to an electrode and thereby be reduced or oxidised respe ...

Klimov VK-1
The Klimov VK-1 was the first Soviet jet engine to see significant production. It was developed by and first produced by the GAZ 116 works. Derived from the Rolls-Royce Nene, the engine was also built under licence in China as the Wopen WP-5. Design and development Immediately after World War II, the Soviet Union manufactured copies of first generation German Junkers 004 and BMW 003 engines, which were advanced designs with poor durability, limited by Germany's shortage of rare metals in wartime. However, in 1946, before the Cold War had really begun, the new British Labour government under the prime minister, Clement Attlee, keen to improve diplomatic relations with the Soviet Union, authorised Rolls-Royce to export 40 Rolls-Royce Nene centrifugal flow turbojet engines. In 1958 it was discovered during a visit to Beijing by Whitney Straight, then deputy chairman of Rolls-Royce, that this engine had been copied without license to power the MiG-15 'Fagot', first as the RD-45 ...
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Torpedo Boat Classes
A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such a device was called an automotive, automobile, locomotive, or fish torpedo; colloquially a ''fish''. The term ''torpedo'' originally applied to a variety of devices, most of which would today be called mines. From about 1900, ''torpedo'' has been used strictly to designate a self-propelled underwater explosive device. While the 19th-century battleship had evolved primarily with a view to engagements between armored warships with large-caliber guns, the invention and refinement of torpedoes from the 1860s onwards allowed small torpedo boats and other lighter surface vessels, submarines/submersibles, even improvised fishing boats or frogmen, and later light aircraft, to destroy large ships without the need of large guns, though some ...
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ORP Odważny
ORP may refer to: * Okręt Rzeczypospolitej Polskiej, a Polish Navy ship prefix * Operational Ration Pack, UK military * Orpington railway station, Bromley, England * O'Reilly Raceway Park at Indianapolis * Oxidation reduction potential Redox potential (also known as oxidation / reduction potential, ''ORP'', ''pe'', ''E_'', or E_) is a measure of the tendency of a chemical species to acquire electrons from or lose electrons to an electrode and thereby be reduced or oxidised respe ...

Skarżysko-Kamienna
Skarżysko-Kamienna is a city in northern Świętokrzyskie Voivodeship in south-central Poland by Kamienna river, to the north of Świętokrzyskie Mountains; one of the voivodship's major cities. Prior to 1928, it bore the name of ''Kamienna''; in less formal contexts usually only the first part of the name (''Skarżysko'') is used. It belongs to historic Polish province of Lesser Poland. Skarżysko-Kamienna is an important railroad junction, with two main lines (Kraków – Warsaw and Sandomierz – Koluszki) crossing there. History The present-day districts of Łyżwy and Nowy Młyn were the locations of Paleolithic industrial settlements, which are now archaeological sites, part of the Rydno Archaeological Reserve, consisting of several hundred former Paleolithic sites stretching from Skarżysko-Kamienna to Wąchock. The sites were discovered in 1923–1925. In 1173, the knights' congress gathered in Milica village (now the town's district) led by Casimir II The Just. Within ...
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White Eagle Museum
The White Eagle Museum ( pl, Muzeum im. Orła Białego) is a Polish military museum located in the town of Skarżysko-Kamienna in the central Świętokrzyskie Voivodeship, opened in 1969. Museum The museum has a large collection of Russian, Polish and German World War II and post-war military equipment. The military equipment is displayed in a permanent outdoor exhibition covering , and includes tanks, artillery pieces, armoured vehicles, rockets and aircraft. The museum also collects documents and historical materials relating to the history of the city and the region, and objects related to military history from World War II onwards. The museum is housed in the former residence of the superintendent of the Rejów foundry, which was built in 1836–1838. It houses exhibitions pertaining to local industry, including ''Państwowa Fabryka Amunicji'' (The National Ammunition Factory). During World War II, the munitions factory was taken over by the German company, HASAG, and used for ...
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Orp Odwazny 6
ORP may refer to: * Okręt Rzeczypospolitej Polskiej, a Polish Navy ship prefix * Operational Ration Pack, UK military * Orpington railway station, Bromley, England * O'Reilly Raceway Park at Indianapolis * Oxidation reduction potential Redox potential (also known as oxidation / reduction potential, ''ORP'', ''pe'', ''E_'', or E_) is a measure of the tendency of a chemical species to acquire electrons from or lose electrons to an electrode and thereby be reduced or oxidised respe ...

Aluminium Alloy
An aluminium alloy (or aluminum alloy; see spelling differences) is an alloy in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin, nickel and zinc. There are two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories heat-treatable and non-heat-treatable. About 85% of aluminium is used for wrought products, for example rolled plate, foils and extrusions. Cast aluminium alloys yield cost-effective products due to the low melting point, although they generally have lower tensile strengths than wrought alloys. The most important cast aluminium alloy system is Al–Si, where the high levels of silicon (4–13%) contribute to give good casting characteristics. Aluminium alloys are widely used in engineering structures and components where light weight or corrosion resistance is required.I. J. Polmear, ''Light Alloys'', Arnold, 1995 Alloys c ...
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Hydronalium
Hydronalium is a family of aluminium-magnesium alloys. It is an alloy predominantly of aluminium, with between 1%-12% of magnesium as the primary alloying ingredient. It also includes a secondary addition of manganese, usually between 0.4%-1%. The Hydronalium alloys originated in Germany in the 1930s and are best known, at least by that name, in Eastern Europe. They were widely used for shipbuilding in Poland. There are many alloys within this family, one standard reference listing over twenty. Applications The alloy family is noted for its resistance to seawater corrosion. As such it is used in sheet form for boatbuilding and light shipbuilding. As castings it is used for marine fittings. The reliable strength of some grades is sufficient for aerospace use and so they are used for wetted components of seaplane aircraft, such as floats and propellers, where marine corrosion resistance is also needed. Some variants of the alloy are ductile enough to be drawn into wire. This, ...
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Gas Turbine
A gas turbine, also called a combustion turbine, is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the direction of flow: * a rotating gas compressor * a combustor * a compressor-driving turbine. Additional components have to be added to the gas generator to suit its application. Common to all is an air inlet but with different configurations to suit the requirements of marine use, land use or flight at speeds varying from stationary to supersonic. A propelling nozzle is added to produce thrust for flight. An extra turbine is added to drive a propeller (turboprop) or ducted fan (turbofan) to reduce fuel consumption (by increasing propulsive efficiency) at subsonic flight speeds. An extra turbine is also required to drive a helicopter rotor or land-vehicle transmission (turboshaft), marine propeller or electrical generator (power turbine). Greater ...
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