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Mark 56 Gun Fire Control System
Mark 56 Gun Fire Control System (Mk.56 GFCS) is a gun fire-control system made up of AN/SPG-35 radar tracker and the Mark 42 ballistic computer. Overview The directional board is maneuverable, equipped with an X-band radar Mk.35 (later renamed AN/SPG-35 based on the naming convention for military electronic equipment) and an optical sight, and is manned with two operators on board. It was an expression. Target tracking by the operator's optical sight is also possible, but fully automated tracking is the basic operation, and blindfire is also possible for the first time as a practical aircraft of the US Navy. Mark 42 Ballistic Computer First, the target is captured by a spiral scan that slowly scans the space by swinging the beam at an angle of 6 degrees, and then a conical scan that quickly measures and distances by narrowing the beam swing angle to 0.5 degrees. Track the target by scanning. The speed of the tracking target is obtained by the gyroscope of the directiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Hornet (CV-12)
USS ''Hornet'' (CV/CVA/CVS-12) is an ''Essex''-class aircraft carrier built for the United States Navy (USN) during World War II. Completed in late 1943, the ship was assigned to the Fast Carrier Task Force (variously designated as Task Force 38 or 58) in the Pacific Ocean, the navy's primary offensive force during the Pacific War. In early 1944, she participated in attacks on Japanese installations in New Guinea, Palau and Truk among others. ''Hornet'' then took part in the Mariana and Palau Islands campaign and most of the subsidiary operations, most notably the Battle of the Philippine Sea in June that was nicknamed the "Great Marianas Turkey Shoot" for the disproportionate losses inflicted upon the Japanese. The ship then participated in the Philippines Campaign in late 1944, and the Volcano and Ryukyu Islands campaign in the first half of 1945. She was badly damaged by a typhoon in June and had to return to the United States for repairs. After the war she took part in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subsonic Aircraft
A subsonic aircraft is an aircraft with a maximum speed less than the speed of sound ( Mach 1). The term technically describes an aircraft that flies below its critical Mach number, typically around Mach 0.8. All current civil aircraft, including airliners, helicopters, future passenger drones, personal air vehicles and airships, as well as many military types, are subsonic. Characteristics Although high speeds are usually desirable in an aircraft, supersonic flight requires much bigger engines, higher fuel consumption and more advanced materials than subsonic flight. A subsonic type therefore costs far less than the equivalent supersonic design, has greater range and causes less harm to the environment. The less harsh subsonic environment also allows a much wider range of aircraft types, such as balloons, airships and rotorcraft, allowing them to fill a much wider range of roles. Subsonic aerodynamics Subsonic flight is characterised aerodynamically by incompressible flow, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Des Moines-class Cruiser
''Italic text'' The ''Des Moines''-class cruisers were a trio of very large U.S. Navy heavy cruisers commissioned in 1948 and 1949. They were the last of the all-gun heavy cruisers, exceeded in size in the American navy only by the s that straddled the line between heavy cruiser and battlecruiser. Two were decommissioned by 1961 but the , served until 1975. is a museum ship in Quincy, Massachusetts; the other two were scrapped. Description Derived from the heavy cruisers, they were larger, had an improved machinery layout and carried a new design of auto-loading, rapid-fire 8"/55 gun (the Mk16). The improved Mk16 guns of the main battery were the first auto-loading 8" guns fielded by the US Navy and allowed a much higher rate of fire than earlier designs, capable of sustaining eight shots per minute per barrel, about twice that previous heavy cruisers could. The auto-loading mechanism could function at any elevation, giving some anti-aircraft capability. While the secondary b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS New Jersey (BB-62)
USS ''New Jersey'' (BB-62) is an , and was the second ship of the United States Navy to be named after the US state of New Jersey. She was often referred to fondly as "Big J". ''New Jersey'' earned more battle stars for combat actions than the other three completed ''Iowa''-class battleships, and was the only US battleship providing gunfire support during the Vietnam War. During World War II, ''New Jersey'' shelled targets on Guam and Okinawa, and screened aircraft carriers conducting raids in the Marshall Islands. During the Korean War, she was involved in raids up and down the North Korean coast, after which she was decommissioned into the United States Navy reserve fleets, better known as the "mothball fleet". She was briefly reactivated in 1968 and sent to Vietnam to support US troops before returning to the mothball fleet in 1969. Reactivated once more in the 1980s as part of the 600-ship Navy program, ''New Jersey'' was modernized to carry missiles and recommissioned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Essex-class Aircraft Carrier
The ''Essex'' class was a class of aircraft carriers of the United States Navy. The 20th century's most numerous class of capital ship, the class consisted of 24 vessels, which came in "short-hull" and "long-hull" versions. Thirty-two ships were ordered, but as World War II wound down, six were canceled before construction, and two were canceled after construction had begun. Fourteen saw combat during World War II. None were lost to enemy action, though several sustained crippling damage. ''Essex''-class carriers were the backbone of the U.S. Navy from mid-1943 and, with the three carriers added just after the war, continued to be the heart of U.S. naval strength until supercarriers joined the fleet in the 1960s and 1970s. Several of the carriers were rebuilt to handle heavier and faster aircraft of the early jet age, and some served until well after the Vietnam War. Overview The preceding s and the designers' list of trade-offs and limitations forced by arms control treaty obl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Saint Paul (CA-73) Shelling Korea 1953
There have been three ships of the United States Navy named USS ''Saint Paul'' for Saint Paul, Minnesota: * , a former passenger liner which was refitted into a ''Saint Louis''-class auxiliary cruiser and was in commission in 1898, and again from 1917 to 1919. * , a heavy cruiser, was the original name of . * , another ''Baltimore''-class heavy cruiser in commission from 1945 to 1971. Additionally, two ships of the U.S. Navy have been named for both of the "Twin Cities" (Minneapolis Minneapolis () is the largest city in Minnesota, United States, and the county seat of Hennepin County. The city is abundant in water, with thirteen lakes, wetlands, the Mississippi River, creeks and waterfalls. Minneapolis has its origins ... and Saint Paul, Minnesota) together: * , the 21st , in commission from 1984 to 2008. * is a planned . See also * {{DEFAULTSORT:Saint Paul United States Navy ship names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamagumo-class Destroyer
The ''Yamagumo'' class are vessels of the Japanese Maritime Self-Defense Force, usually classified as a destroyer, but due to their relatively light displacement, in other sources as a destroyer escort. This class is the successor of the . This class was planned to become the new generation workhorse of the fleet of the JMSDF. In support of this objective, it was equipped with some new generation weapon and sensor systems such as the ASROC anti-submarine rocket and the OPS-11 early warning radar (Japanese equivalent of the American AN/SPS-40 radar). The ''Minegumo''-class destroyer derived from this class as the new DASH The dash is a punctuation mark consisting of a long horizontal line. It is similar in appearance to the hyphen but is longer and sometimes higher from the baseline. The most common versions are the endash , generally longer than the hyphen b ... equipped version, but after the QH-50D DASH was scrapped, the JMSDF decided on resuming the construction of thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harukaze-class Destroyer
The ''Harukaze''-class destroyer was the first indigenous post-World War II Japanese destroyer class. Its main mission was anti-submarine warfare. Almost all equipment was supplied from the United States according to the U.S. and Japan Mutual Defense Assistance Agreement. Sensor systems on-board was standard equipment in the U.S. Navy at that time, for example, the AN/SPS-6 air-search radar, the AN/SPS-5 surface-search radar, the QHB search sonar, the QDA attack sonar. Three 5-inch/38 caliber Mark 12 guns were mounted on Mark 30 single mounts, and controlled by a Mark 51 director. The JMSDF wasn't satisfied with performance of the director, so later the Mark 51 was replaced by the Swedish advanced GFCS developed by Contraves (''Harukaze'') or American Mark 57 (''Yukikaze''). At the same time, K-guns and depth charge racks were reduced by half and replaced by Mark 32 torpedo The Mark 32 torpedo was the first active acoustic antisubmarine homing torpedo in United States Navy ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan Maritime Self-Defense Force
, abbreviated , also simply known as the Japanese Navy, is the maritime warfare branch of the Japan Self-Defense Forces, tasked with the naval defense of Japan. The JMSDF was formed following the dissolution of the Imperial Japanese Navy (IJN) after World War II. The JMSDF has a fleet of 154 ships, 346 aircraft and 50,800 personnel. History Origin Following Japan's defeat in World War II, the Imperial Japanese Navy was dissolved by the Potsdam Declaration acceptance. Ships were disarmed, and some of them, such as the battleship , were taken by the Allied Powers as reparation. The remaining ships were used for repatriation of the Japanese soldiers from abroad and also for minesweeping in the area around Japan, initially under the control of the ''Second Bureau of the Demobilization Ministry''. The minesweeping fleet was eventually transferred to the newly formed Maritime Safety Agency, which helped maintain the resources and expertise of the navy. Japan's 1947 Constitution w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ivan A
Ivan () is a Slavic male given name, connected with the variant of the Greek name (English: John) from Hebrew meaning 'God is gracious'. It is associated worldwide with Slavic countries. The earliest person known to bear the name was Bulgarian tsar Ivan Vladislav. It is very popular in Russia, Ukraine, Croatia, Serbia, Bosnia and Herzegovina, Slovenia, Bulgaria, Belarus, North Macedonia, and Montenegro and has also become more popular in Romance-speaking countries since the 20th century. Etymology Ivan is the common Slavic Latin spelling, while Cyrillic spelling is two-fold: in Bulgarian, Russian, Macedonian, Serbian and Montenegrin it is Иван, while in Belarusian and Ukrainian it is Іван. The Old Church Slavonic (or Old Cyrillic) spelling is . It is the Slavic relative of the Latin name , corresponding to English ''John''. This Slavic version of the name originates from New Testament Greek (''Iōánnēs'') rather than from the Latin . The Greek name is in tur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
5"/54 Caliber Mark 42 Gun
The Mark 42 5"/54 caliber gun (127mm) is a naval gun (naval artillery) mount used by the United States Navy and other countries. It consisted of the Mark 18 gun and Mark 42 gun mount. United States naval gun terminology indicates the gun fires a projectile in diameter, and the barrel is 54 calibers long (barrel length is 5" × 54 = 270" or 6.9 meters.) In the 1950s a gun with more range and a faster rate of fire than the 5"/38 caliber gun used in World War II was needed, therefore, the gun was created concurrently with the 3"/70 Mark 26 gun for different usages. The 5"/54 Mk 42 is an automatic, dual-purpose (air / surface target) gun mount. It is usually controlled remotely from the Mk 68 Gun Fire Control System, or locally from the mount at the One Man Control (OMC) station. The self-loading gun mount weighs about including two drums under the mount holding 40 rounds of semi-fixed case type ammunition. The gun fires projectiles at a velocity of .Baile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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