|
MiG-21 LanceR
This is a list of variants and specifications for variants of the Mikoyan-Gurevich MiG-21, which differed considerably between models. Variants All information in this section adapted from ''MiG-21'' (2008).Gordon, Yefim. ''Mikoyan MiG-21'' (Famous Russian aircraft). Hinckley: Midland, 2008. . Development and preproduction – Generation Zero (1954–1956) ; (1954) :Preliminary swept-wing design around the Mikulin AM-5A non-reheated turbojet. Instead of building it, the design was quickly reworked into the Ye-2. ; (1954; NATO: "Faceplate") :Swept-wing prototype with Mikulin AM-9B reheated turbojet, armed with three NR-30 cannon, and could carry one UB-16-57 rocket pod. Fitted with RSIU-4 VHF radio, ''Uzel'' IFF interrogator, ARK-5 ''Amur'' automatic direction finder with RUP landing approach computer, MRP-48P ''Dyatel'' marker beacon receiver, SRO-2 ''Khrom'' IFF transponder, ''Sirena-2'' RWR, SRD-1M ''Radal'-M'' radar rangefinder linked to an ASP-5N computing gunsight. Ye-2 mad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is an affinity group for contributors with shared goals within the Wikimedia movement. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within Wikimedia project, sibling projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by ''Smithsonian Magazine, Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semi-active Radar Homing
Semi-active radar homing (SARH) is a common type of missile guidance system, perhaps the most common type for longer-range air-to-air and surface-to-air missile systems. The name refers to the fact that the missile itself is only a passive detector of a radar signal—provided by an external source via radar illumination—as it reflects off the target (in contrast to active radar homing, which uses an active radar transceiver). Semi-active missile systems use bistatic continuous-wave radar. The NATO brevity code for a semi-active radar homing missile launch is Fox One. Concept The basic concept of SARH is that since almost all detection and tracking systems consist of a radar system, duplicating this hardware on the missile itself is redundant. The weight of a transmitter reduces the range of any flying object, so passive systems have greater reach. In addition, the resolution of a radar is strongly related to the physical size of the antenna, and in the small nose cone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ling-Temco-Vought
Ling-Temco-Vought (LTV) was a large American conglomerate which existed from 1961 to 2001. At its peak, it was involved in aerospace, airlines, electronics, steel manufacturing, sporting goods, meat packing, car rentals, and pharmaceuticals, among other businesses. It began in 1947 as Ling Electric Company, later named Ling-Temco-Vought, followed by LTV Corporation and eventually LTV Steel until its end in 2001. History Ling Electric Company In 1947, entrepreneur James Ling founded an electrical-contracting business, Ling Electric Company, in Dallas, Texas. He lived in the rear of the shop. After incorporating and taking the company public in 1955, Ling found innovative ways to market the stock, including selling door-to-door and from a booth at the State Fair of Texas. Ling-Temco-Vought In 1956, Ling bought L.M. Electronics, and in 1959, added Altec Electronics, a maker of stereo systems and speakers. In 1960, Ling merged the company with Temco Aircraft, best known f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lydia Zaitseva
Lydia (; ) was an Iron Age kingdom situated in western Anatolia, in modern-day Turkey. Later, it became an important province of the Achaemenid Empire and then the Roman Empire. Its capital was Sardis. At some point before 800 BC, the Lydian people achieved some sort of political cohesion, and existed as an independent kingdom by the 600s BC. At its greatest extent, during the 7th century BC, it covered all of western Anatolia. In 546 BC, it became a satrapy of the Achaemenid Empire, known as ''Sparda'' in Old Persian. In 133 BC, it became part of the Roman province of Asia. Lydian coins, made of electrum, are among the oldest in existence, dated to around the 7th century BC. Geography Lydia is generally located east of ancient Ionia in the modern western Turkish provinces of Uşak, Manisa and inland İzmir.Rhodes, P.J. ''A History of the Classical Greek World 478–323 BC''. 2nd edition. Chichester: Wiley-Blackwell, 2010, p. 6. The boundaries of historical Lydia va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mig21bisweb or MIG welding
{{disambig ...
Mig, MiG, or MIG may refer to: Business *MiG, a Russian aircraft corporation **Any of the MiG aircraft *Marfin Investment Group, Greek private equity company *Atlas Arteria, formerly Macquarie Infrastructure Group, toll roads company *Mortgage indemnity guarantee Other uses * Mig33 mobile social networking, Australian digital media company * Luton Town MIGs, English football hooligans * Monokine Induced by Gamma interferon, or CXCL9 * IATA code for Mianyang Nanjiao Airport, China * Mig Ayesa, an Australian singer-songwriter ** ''MiG'' (album), a 2007 album by Mig Ayesa * Metal inert gas welding Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) and metal active gas (MAG) is a welding process in which an electric arc forms between a consumable MIG wire electrode and the workpiece metal(s), which hea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tumansky R-25
The Tumansky R-25 is a turbojet engine, which is seen as the ultimate development of Tumansky R-11. It was designed under the leadership of Sergei Alekseevich Gavrilov. Design and development The Tumansky R-25 was designed as a replacement for the Tumansky R-13 in MiG-21 fighters. The R-25 is a two-spool axial-flow turbojet with a new compressor with increased overall pressure ratio and airflow, variable two-stage afterburner, and greater use of titanium. An unusual addition to the R-25 was an emergency mode thrust boost which increased the compressor speed to 106% and also increased the afterburner fuel flow with the addition of a second afterburner fuel pump. Thrust was increased to below an altitude of . The time limit for its use was 1 minute during training and 2 minutes in wartime, as further use caused the engine to overheat and be irreparably damaged. Use of this WEP required the engine to be removed on landing for inspection. Use of WEP shortened the already limited ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tumansky R-13
The Tumansky R-13 is a Soviet turbojet engine designed by . Design and development The Tumansky R-13 is a development of the successful Tumansky R-11 engine. It is a two-spool axial-flow turbojet featuring a new five-stage high-pressure compressor, new combustion chamber design to facilitate restarting the engine at high altitudes, new afterburner, and greater use of titanium components. It is used by MiG-21M, MF, SM, and SMT, and Sukhoi Su-15M and TM. R-13 is also built in China as LM WP13, and similar to Tumansky R-11 — originally both were licensed to be built in China, but after the Sino-Soviet split all Soviet technical support was withdrawn, Chinese proceeded on their own. Under the leadership of the principal engineer Jiang Hepu (江和甫), both R-11 and R-13 were successfully built in China. The R-95 is a non-afterburning development of this engine used by initial versions of the Sukhoi Su-25 The Sukhoi Su-25 ''Grach'' ( ('' rook''); NATO reporting name: Frogfoo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Su-25
The Sukhoi Su-25 ''Grach'' ( ('' rook''); NATO reporting name: Frogfoot) is a subsonic, single-seat, twin-engine jet aircraft developed in the Soviet Union by Sukhoi. It was designed to provide close air support for Soviet Ground Forces. The first prototype made its maiden flight on 22 February 1975. After testing, the aircraft went into series production in 1978 in Tbilisi in the Georgian Soviet Socialist Republic. Early variants included the Su-25UB two-seat trainer, the Su-25BM for target-towing, and the Su-25K for export customers. Some aircraft were upgraded to the Su-25SM standard in 2012. The Su-25T and the Su-25TM (also known as the Su-39) were further developments, not produced in significant numbers. The Su-25, and the Su-34, were the only armoured, fixed-wing aircraft in production in 2007.Gordon and Dawes 2004. Su-25s are in service with Russia, other CIS members, and export customers. Production of the Su-25 ended in 2010 in Georgia. Attempts continue to be ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supersonic Transport
The ogive.html" ;"title="Concorde supersonic transport had an ogive">ogival delta wing, a slender fuselage and four underslung Rolls-Royce/Snecma Olympus 593 engines. file:Tu-144.jpg, The Tupolev Tu-144 was the first SST to enter service and the first to leave it. Only 55 passenger flights were carried out before service ended due to safety concerns. A small number of cargo and test flights were also carried out after its retirement. A supersonic transport (SST) or a supersonic airliner is a Civil aviation, civilian supersonic aircraft designed to transport passengers at speeds greater than the speed of sound in terms of air speed. To date, the only SSTs to see regular service have been Concorde and the Tupolev Tu-144. The last passenger flight of the Tu-144 was in June 1978 and it was last flown in 1999 by NASA. Concorde's last commercial flight was in October 2003, with a November 26, 2003 ferry flight being its last flight. Following the termination of flying by Concorde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
