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2014 North Korean Missile Tests
The 2014 North Korean missile tests were a series of North Korean missile tests in 2014. Hwasong-7 overview The Hwasong-7 (sometimes referred as Nodong-1 or Nodong in South Korea) is a single stage, mobile liquid propellant medium range ballistic missile developed by North Korea. Developed in the mid-1980s, it is an adaptation of the Soviet SS-1, more commonly known by its NATO reporting name " Scud". It is believed North Korea obtained Scud-B designs from Egypt and possibly Scud-C designs from China, and reverse-engineered them into a larger, longer-distance weapon dubbed the Rodong. United States reconnaissance satellites first detected this type in May 1990 at the Musudan-ri test launch facility. The precise capabilities and specifications of the missile are unknown; even the fact of its production and deployment are controversial. Rodong-1 technology has been exported. Variants are believed to be the basis for Iran's Shahab-3 and Pakistan's Ghauri missiles. June 2014 test ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staging (rocketry)
A multistage rocket or step rocket is a launch vehicle that uses two or more rocket ''stages'', each of which contains its own engines and propellant. A ''tandem'' or ''serial'' stage is mounted on top of another stage; a ''parallel'' stage is attached alongside another stage. The result is effectively two or more rockets stacked on top of or attached next to each other. Two-stage rockets are quite common, but rockets with as many as five separate stages have been successfully launched. By jettisoning stages when they run out of propellant, the mass of the remaining rocket is decreased. Each successive stage can also be optimized for its specific operating conditions, such as decreased atmospheric pressure at higher altitudes. This ''staging'' allows the thrust of the remaining stages to more easily accelerate the rocket to its final speed and height. In serial or tandem staging schemes, the first stage is at the bottom and is usually the largest, the second stage and subsequ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shahab-3
The Shahab-3 ( fa, شهاب ۳, Šahâb 3; meaning "meteor-3") is a liquid-propelled medium-range ballistic missile (MRBM) developed by Iran and based on the North Korean Nodong-1. The Shahab-3 has a range of ; a MRBM variant can now reach (can hit targets as far as Israel, Egypt, Romania, Bulgaria and Greece). It was tested from 1998 to 2003 and added to the military arsenal on 7 July 2003, with an official unveiling by Ayatollah Khamenei on July 20. With an accuracy of 140 m CEP, the Shahab-3 missile is primarily effective against large, soft targets (like military airfields). Given the Shahab-3’s payload capacity, it would likely be capable of delivering nuclear warheads. According to the IAEA, Iran in the early 2000s may have explored various fuzing, arming and firing systems to make the Shahab-3 more capable of reliably delivering a nuclear warhead. The forerunners to this missile include the Shahab-1 and Shahab-2. In 2007, the then- Iranian Defence Minister Admiral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2014 In North Korea
The following lists events that happened in 2014 in North Korea. Incumbents *Premier: Pak Pong-ju * Supreme Leader: Kim Jong-un Events January * January 20 – Kenneth Bae, an American prisoner in North Korea, releases a message to the United States for help. February * February 5 – North Korea and South Korea hold meetings to discuss visitation reunions of families separated by the Korean War. * February 7 – The United Nations' commission of inquiry on human rights in the DPRK publishes a landmark report, which concludes that the DPRK's government is perpetrating "unspeakable atrocities" against its own people on a vast scale and committing “widespread, systematic and gross” violations that amount to crimes against humanity. * February 10 – North Korea withdraws an invitation to a United States envoy to discuss the release of Kenneth Bae. * February 11 – Talks between North Korea and the United States occur, with North and South Korea scheduled to start high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Of Japan
The Sea of Japan is the marginal sea between the Japanese archipelago, Sakhalin, the Korean Peninsula, and the mainland of the Russian Far East. The Japanese archipelago separates the sea from the Pacific Ocean. Like the Mediterranean Sea, it has almost no tides due to its nearly complete enclosure from the Pacific Ocean. This isolation also affects faunal diversity and salinity, both of which are lower than in the open ocean. The sea has no large islands, bays or capes. Its water balance is mostly determined by the inflow and outflow through the straits connecting it to the neighboring seas and the Pacific Ocean. Few rivers discharge into the sea and their total contribution to the water exchange is within 1%. The seawater has an elevated concentration of dissolved oxygen that results in high biological productivity. Therefore, fishing is the dominant economic activity in the region. The intensity of shipments across the sea has been moderate owing to political issues, bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean Peninsula
Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic of Korea) comprising its southern half. Korea consists of the Korean Peninsula, Jeju Island, and several minor islands near the peninsula. The peninsula is bordered by China to the northwest and Russia to the northeast. It is separated from Japan to the east by the Korea Strait and the Sea of Japan (East Sea). During the first half of the 1st millennium, Korea was divided between three states, Goguryeo, Baekje, and Silla, together known as the Three Kingdoms of Korea. In the second half of the 1st millennium, Silla defeated and conquered Baekje and Goguryeo, leading to the "Unified Silla" period. Meanwhile, Balhae formed in the north, superseding former Goguryeo. Unified Silla eventually collapsed into three separate states due to civi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wonsan
Wŏnsan (), previously known as Wŏnsanjin (), Port Lazarev, and Genzan (), is a port city and naval base located in Kangwŏn Province, North Korea, along the eastern side of the Korean Peninsula, on the Sea of Japan and the provincial capital. The port was opened by occupying Japanese forces in 1880. Before the 19501953 Korean War, it fell within the jurisdiction of the then South Hamgyŏng province, and during the war it was the location of the Blockade of Wŏnsan. The population of the city was estimated at 329,207 in 2013. Notable people from Wŏnsan include Kim Ki-nam, a diplomat and former Vice Chairman of the ruling Workers' Party of Korea. In 2013, it was announced that Wŏnsan would be converted into a summer destination with resorts and entertainment. Having spent his childhood years there, Kim Jong-un has expressed significant interest in further developing the region, with the construction of new infrastructure such as Kalma Airport, a dual-use civilian intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ghauri (missile)
The Ghauri–I ( ur, غوری-ا; official codename: Hatf–V Ghauri–I) is a land-based surface-to-surface medium-range ballistic missile, in current service with the Pakistan Army's Strategic Forces Command— a subordinate command of Strategic Plans Division. Influenced from the design of Nodong-1 of North Korea, its extensive modification and engineering took place in Kahuta Research Laboratories (KRL) in 1990s with an objective of developing an electronic system that uses a single stage liquid fuel rocket motor to carry a payload of 700 kg to a range of 1,500 km. This is enough to reach most, if not all of India. Two variants of the Ghauri were produced under the secretive missile research programme started in 1987 and the development of a third variant was cancelled. The Ghauri-II uses increased motor assembly length and improved propellants for an increased range of . The missile is named after Shahabuddin Muhammad Ghauri, while the "Hatf" designation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iran
Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmenistan to the north, by Afghanistan and Pakistan to the east, and by the Gulf of Oman and the Persian Gulf to the south. It covers an area of , making it the 17th-largest country. Iran has a population of 86 million, making it the 17th-most populous country in the world, and the second-largest in the Middle East. Its largest cities, in descending order, are the capital Tehran, Mashhad, Isfahan, Karaj, Shiraz, and Tabriz. The country is home to one of the world's oldest civilizations, beginning with the formation of the Elamite kingdoms in the fourth millennium BC. It was first unified by the Medes, an ancient Iranian people, in the seventh century BC, and reached its territorial height in the sixth century BC, when Cyrus the Great f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bipropellant Rocket
A liquid-propellant rocket or liquid rocket utilizes a rocket engine that uses liquid propellants. Liquids are desirable because they have a reasonably high density and high specific impulse (''I''sp). This allows the volume of the propellant tanks to be relatively low. It is also possible to use lightweight centrifugal turbopumps to pump the rocket propellant from the tanks into the combustion chamber, which means that the propellants can be kept under low pressure. This permits the use of low-mass propellant tanks that do not need to resist the high pressures needed to store significant amounts of gasses, resulting in a low mass ratio for the rocket. An inert gas stored in a tank at a high pressure is sometimes used instead of pumps in simpler small engines to force the propellants into the combustion chamber. These engines may have a higher mass ratio, but are usually more reliable, and are therefore used widely in satellites for orbit maintenance. Liquid rockets can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spy Satellite
A reconnaissance satellite or intelligence satellite (commonly, although unofficially, referred to as a spy satellite) is an Earth observation satellite or communications satellite deployed for military or intelligence applications. The first generation type (i.e., Corona and Zenit) took photographs, then ejected canisters of photographic film which would descend back down into Earth's atmosphere. Corona capsules were retrieved in mid-air as they floated down on parachutes. Later, spacecraft had digital imaging systems and downloaded the images via encrypted radio links. In the United States, most information available about reconnaissance satellites is on programs that existed up to 1972, as this information has been declassified due to its age. Some information about programs before that time is still classified information, and a small amount of information is available on subsequent missions. A few up-to-date reconnaissance satellite images have been declassifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reverse Engineering
Reverse engineering (also known as backwards engineering or back engineering) is a process or method through which one attempts to understand through deductive reasoning how a previously made device, process, system, or piece of software accomplishes a task with very little (if any) insight into exactly how it does so. It is essentially the process of opening up or dissecting a system to see how it works, in order to duplicate or enhance it. Depending on the system under consideration and the technologies employed, the knowledge gained during reverse engineering can help with repurposing obsolete objects, doing security analysis, or learning how something works. Although the process is specific to the object on which it is being performed, all reverse engineering processes consist of three basic steps: Information extraction, Modeling, and Review. Information extraction refers to the practice of gathering all relevant information for performing the operation. Modeling refers to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
