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Hwasong-17
The Hwasong-17 () is a North Korean two-stage ICBM, first unveiled on 10 October 2020, the 75th anniversary of the founding of the Workers' Party of Korea (WPK) parade. This missile is the latest iteration of North Korea's intercontinental ballistic missile (ICBM) program. Japan has estimated its operational range at 15,000 km or more. Unlike its predecessors, the Hwasong-17 may be capable of carrying multiple warheads. North Korea claimed the first Hwasong-17 was successfully launched on 24 March 2022. Western analysts instead believe the 24 March launch was an earlier missile design, and a later test that took place on 18 November 2022 was in fact the first successful test launch. Description The Hwasong-17 is assumed to be a two-stage, liquid fuelled road-mobile ICBM carried by a 22-wheeled transporter erector launcher (TEL) vehicle. The missile itself is judged from images to be 26 m long with a diameter of 2.7 m. The exact capabilities of the missile are as yet unconfirme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean People's Army Strategic Rocket Force
The Korean People's Army Strategic Force (Korean: 조선인민군 전략군), previously known as the Korean People's Army Strategic Rocket Force (Korean: 조선인민군 전략로케트군) and as the Missile Guidance Bureau (Korean: 미사일지도국), is a military branch of the Korean People's Army that oversees North Korea's nuclear and conventional strategic missiles. It is mainly armed with surface-to-surface missiles of domestic design as well as older Soviet and Chinese models. The KPA Strategic Force was established in 1999 when several missile units under KPA Ground Force Artillery Command were re-organized into a single missile force reporting directly to the office of the Supreme Commander of the KPA via the General Staff. History Shortly after Kim Il-Sung's 5 October 1966 instructions to jointly develop the military and the economy, the Second Machine Industry Ministry, under the Workers' Party of Korea secretary in charge of military defence industries was formed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean People's Army Strategic Force
The Korean People's Army Strategic Force (Korean language, Korean: 조선인민군 전략군), previously known as the Korean People's Army Strategic Rocket Force (Korean language, Korean: 조선인민군 전략로케트군) and as the Missile Guidance Bureau (Korean language, Korean: 미사일지도국), is a military branch of the Korean People's Army that oversees North Korea's nuclear and conventional strategic missiles. It is mainly armed with surface-to-surface missiles of domestic design as well as older Soviet Union, Soviet and China, Chinese models. The KPA Strategic Force was established in 1999 when several missile units under KPA Ground Force Artillery Command were re-organized into a single missile force reporting directly to the office of the Supreme Commander of the KPA via the General Staff. History Shortly after Kim Il-Sung's 5 October 1966 instructions to jointly develop the military and the economy, the Second Machine Industry Ministry, under the Workers' Party ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RD-250
The RD-250 (GRAU Index 8D518) is the base version of a dual-nozzle family of liquid-fuel rocket, liquid rocket engines, burning Dinitrogen tetroxide, N2O4 and Unsymmetrical dimethylhydrazine, UDMH in the Staged combustion cycle (rocket), oxidizer rich staged combustion cycle. The RD-250 was developed by NPO Energomash, OKB-456 for Mikhail Yangel, Yangel's Yuzhmash, PA Yuzhmash ICBM, the R-36 (missile), R-36 (8K67). Its variations were also used on the Tsyklon-2 and Tsyklon-3 launch vehicles. It was supposed to be used on the Tsyklon-4, but since the cancellation of the project it should be considered as out of production. Versions The engine has seen different versions made: * RD-250 (GRAU Index 8D518): Base engine of the family. Used on the R-36 (missile), R-36. A bundle of three RD-250 form the RD-251 cluster. * RD-250P (GRAU Index 8D518P): Improved version of the RD-250. Used on the R-36 (missile), R-36P. A bundle of three RD-250P form the RD-251P cluster. * RD-250M (GRAU Index ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Popular Mechanics
''Popular Mechanics'' (sometimes PM or PopMech) is a magazine of popular science and technology, featuring automotive, home, outdoor, electronics, science, do-it-yourself, and technology topics. Military topics, aviation and transportation of all types, space, tools and gadgets are commonly featured. It was founded in 1902 by Henry Haven Windsor, who was the editor and—as owner of the Popular Mechanics Company—the publisher. For decades, the tagline of the monthly magazine was "Written so you can understand it." In 1958, PM was purchased by the Hearst Corporation, now Hearst Communications. In 2013, the US edition changed from twelve to ten issues per year, and in 2014 the tagline was changed to "How your world works." The magazine added a podcast in recent years, including regular features ''Most Useful Podcast Ever'' and ''How Your World Works''. History ''Popular Mechanics'' was founded in Chicago by Henry Haven Windsor, with the first issue dated January 11, 1902. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
INDOPACOM
United States Indo-Pacific Command (USINDOPACOM) is a unified combatant command of the United States Armed Forces responsible for the Indo-Pacific region. Formerly known as United States Pacific Command (USPACOM) since its inception in 1947, the command was renamed to U.S. Indo-Pacific Command in 2018, in recognition of the increasing connectivity between the Indian and Pacific oceans. It is the oldest and largest of the unified combatant commands. Its commander, the senior U.S. military officer in the Pacific, is responsible for military operations in an area that encompasses more than , or roughly 52 percent of the Earth's surface, stretching from the waters of the West Coast of the United States to the east coast maritime borderline waters of Pakistan at the meridian 66° longitude east of Greenwich and from the Arctic to the Antarctic. The commander reports to the President of the United States through the Secretary of Defense and is supported by service component and subo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low Earth Orbit
A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never more than about one-third of the radius of Earth. The term ''LEO region'' is also used for the area of space below an altitude of (about one-third of Earth's radius). Objects in orbits that pass through this zone, even if they have an apogee further out or are sub-orbital, are carefully tracked since they present a collision risk to the many LEO satellites. All crewed space stations to date have been within LEO. From 1968 to 1972, the Apollo program's lunar missions sent humans beyond LEO. Since the end of the Apollo program, no human spaceflights have been beyond LEO. Defining characteristics A wide variety of sources define LEO in terms of altitude. The altitude of an object in an elliptic orbit can vary significantly along the orbit. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unha-3
The Unha or Eunha ( ko, 은하, 銀河, "Galaxy") is a North Korean expendable carrier rocket, which partially utilizes the same delivery system as the Taepodong-2 orbital launch system. History North Korea's first orbital space launch attempt occurred on August 31, 1998, and was unsuccessful. This launch attempt was performed by a Paektusan-1 rocket, which used a solid motor third stage, a Scud-missile-based second stage, and a Nodong-1 based first stage. Nodong-1 was a North Korean-developed stage thought to be a scale-up of the old Soviet Scud missile. The Paektusan-1 stood tall, was in diameter, and weighed about 21 tonnes. Vehicle description The Unha's first stage consists of four clustered Nodong motors, which themselves are enlarged Scud motors. The second stage was initially thought to be based on the SS-N-6, although it, too, is now believed to be based on Scud technology. The third and last stage might be identical to the Iranian Safir's second stage which is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taepodong-2
The Taepodong-2 (TD-2, also spelled as Taep'o-dong 2) Federation of American Scientists, May 30, 2008 ( ko, 대포동 2호) is a designation used to indicate what was initially believed to be a n two or three-stage design that is the successor to the technology demonstrator. In 2012 the |
Union Of Concerned Scientists
The Union of Concerned Scientists (UCS) is a nonprofit science advocacy organization based in the United States. The UCS membership includes many private citizens in addition to professional scientists. Anne Kapuscinski, Professor of Environmental Studies and Director of The Coastal Science and Policy Program at the University of California—Santa Cruz, currently chairs the UCS Board of Directors, having replaced James J. McCarthy, Professor of Biological Oceanography at Harvard University and past president of the American Association for the Advancement of Science in 2015. History The Union of Concerned Scientists was founded in 1969 by faculty and students of the Massachusetts Institute of Technology. The organization's founding document says it was formed to "initiate a critical and continuing examination of governmental policy in areas where science and technology are of actual or potential significance" and to "devise means for turning research applications away from the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lofted Trajectory
Projectile motion is a form of motion experienced by an object or particle (a projectile) that is projected in a gravitational field, such as from Earth's surface, and moves along a curved path under the action of gravity only. In the particular case of projectile motion of Earth, most calculations assume the effects of air resistance are passive and negligible. The curved path of objects in projectile motion was shown by Galileo to be a parabola, but may also be a straight line in the special case when it is thrown directly upwards. The study of such motions is called ballistics, and such a trajectory is a ballistic trajectory. The only force of mathematical significance that is actively exerted on the object is gravity, which acts downward, thus imparting to the object a downward acceleration towards the Earth’s center of mass. Because of the object's inertia, no external force is needed to maintain the horizontal velocity component of the object's motion. Taking other fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Launch Vehicle
The Satellite Launch Vehicle or SLV was a small-lift launch vehicle project started in the early 1970s by the Indian Space Research Organisation to develop the technology needed to launch satellites. SLV was intended to reach a height of and carry a payload of . The first experimental flight of SLV-3, in August 1979, was a failure. The first successful launch took place on 18 July 1980. It was a four-stage rocket with all solid-propellant motors. The first launch of the SLV took place in Sriharikota on 10 August 1979. The fourth and final launch of the SLV took place on 17 April 1983. It has taken approximately seven years to realise the vehicle from start. The solid motor case for first and second stage are fabricated from 15 CDV6 steel sheets and third and fourth stages from fibre reinforced plastic. Launch statistics Launch history All four SLV launches occurred from the SLV Launch Pad at the Sriharikota High Altitude Range. The first two launches were experimental ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juche
''Juche'' ( ; ), officially the ''Juche'' idea (), is the state ideology of North Korea and the official ideology of the Workers' Party of Korea. North Korean sources attribute its conceptualization to Kim Il-sung, the country's founder and first leader. ''Juche'' was originally regarded as a variant of Marxism–Leninism until Kim Jong-il, Kim Il-sung's son and successor, declared it a distinct ideology in the 1970s. Kim Jong-il further developed ''Juche'' in the 1980s and 1990s by making ideological breaks from Marxism–Leninism and increasing the importance of his father's ideas. ''Juche'' incorporates the historical materialist ideas of Marxism–Leninism but also strongly emphasizes the individual, the nation state, and national sovereignty. ''Juche'' posits that a country will prosper once it has become self-reliant by achieving political, economic, and military independence. As Kim Jong-il emerged as Kim Il-sung's likely successor in the 1970s, loyalty to the leader ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
