Chengdu J-20 "Dragón Poderoso" el Caza Furtivo Chino de Quinta Generación
- Tema iniciado Grulla
- Fecha de inicio
Linda toma
Los bulbos que se ven bajo los planos de direccion de las alas son los actuadores de los mismos?
Motocar
Colaborador
Perfiles o "blueprint" J-20, toamdo de la web:
http://browse.deviantart.com/?q=Military Aircraft&order=9&offset=456
Éxitos a todos
http://browse.deviantart.com/?q=Military Aircraft&order=9&offset=456
Éxitos a todos
Chinese J-20 Stealth Fighter Advances
Jan 31, 2012
By Bill Sweetman
Washington
Every indication is that nobody in Western intelligence saw the Chengdu J-20 coming. While it was known that China was developing a stealthy combat aircraft, the J-20 has emerged earlier than expected and appears to be more mature than the X‑plane or demonstrator that many people anticipated.
The debut of the J-20 had been predicted in a November 2009 interview on Chinese television by Gen. He Weirong, deputy commander of the People’s Liberation Army Air Force. The general said at the time that a “fourth-generation” fighter would be flown in 2010-11 and be operational in 2017-19.
At least two J-20 prototypes were complete by the time the aircraft made its first flight—or at least its first public flight—on Jan. 11, 2011. The two aircraft are distinguished by the detail design of their exhaust nozzles, leading to speculation that one of the aircraft has Russian-supplied AL-31F engines, of the type fitted to the Chengdu J-10, and the other has the Chinese-developed WS-10 engine.
The J-20 is a big aircraft. Although its overall length (around 66 ft.) is not much greater than that of the 62-ft. Lockheed Martin F-22, the main structure from nose to exhaust nozzles is considerably longer. Like the F-22, it has large weapon bays in the lower fuselage and smaller side bays, the latter probably dedicated to air-to-air missiles.
The J-20 echoes the canard configuration of the J-10, but with canards level with, and immediately in front of, the wing. Two small, canted, all-moving vertical stabilizers are fitted. Although no U.S. manned stealth aircraft have flown with canards, a tail-first layout was featured by early Joint Strike Fighter designs, including Lockheed Martin’s—which the J-20 resembles—and McDonnell Douglas’ X-36 unmanned demonstrator.
Stealth design features mostly follow Lockheed Martin F-22 and X-35 practice. A high chine line around the forebody continues through the inlets and upper body, and flat, canted side surfaces blend into a flat underside via a small-radius edge. The canopy shape is also reminiscent of the F-22. The J-20 uses a diverterless supersonic inlet (DSI)—originally developed by Lockheed Martin, DSI technology is now used on the J‑10B, JF-17 and (according to one report) the Saab Gripen JAS 39E/F.
The rear-aspect view of the aircraft is not as stealthy, a feature also seen on the Sukhoi T-50. This is clearly an intentional trade, eliminating the heavy 2D nozzles of the F-22. In this respect, both the T-50 and J-20 reflect the philosophy behind the pre-1986 Advanced Tactical Fighter studies that preceded the F-22, based on the theory that a fast, high-flying, agile aircraft is relatively immune from rear-quarter attacks.
According to a Chinese paper released on the Internet,(Attenccion! Este paper fue el primer post mio en Zonamilitar. Un par de amigos mios lo han transducido en Englés y lo hemos puesto en el internet. Casi en el mismo tiempo lo he transducdo en Espanol y otra version de mejor Engles y los he puesto aquí en Zonamilitar. El conclusion es Bill Sweetman, el "thinktank"de aviacion de Washingtion, leer foro de CDF o foro de zonamilitar o ambos los dos! Le voy a cobra!
) the main goal of the design was to achieve high speed and maneuverability with the engines that would be available to China in the near future—the AL-31F and WS-10—which do not have the same thrust/weight ratio as the latest Western engines. This resulted in the selection of a delta wing and relatively long body for low supersonic drag, plus large, high-deflection canards to provide agility. The all-moving vertical tails are said to be 40% smaller than conventional fin/rudder designs, and accordingly lighter. Supercruise is probably not attainable with existing engines, but the design looks capable of it, once propulsion technology in China improves.
In 2012, China-watchers will be monitoring progress with the flight-test program and looking for signs of work on the many challenging aspects of stealth. A stealth fighter needs multispectral, active and passive sensors to detect and track its targets, and those sensors need to be fused and managed to minimize emissions. Similarly, to operate at maximum effectiveness as part of a networked force, stealth aircraft need effective low-probability-of-intercept voice and data communication systems. These are problems that the U.S. is still wrestling with, after 25 years of work.
There is another, more fundamental question: What is the J-20 for? The fighter is large for air combat—but China, simply because of geographical factors, doesn’t face an adversary fighter force of the kind that the F-22 was designed to counter. At the same time, the J-20 weapon bays are not large enough for most standoff air-to-surface weapons. One possibility is that the J-20 is intended to threaten intelligence, surveillance and reconnaissance assets and tankers, by using stealth and speed to defeat their escorts.
http://www.aviationweek.com/aw/generic/story_channel.jsp?channel=defense&id=news/dti/2012/01/01/DT_01_01_2012_p59-402522.xml
Jan 31, 2012
By Bill Sweetman
Washington
Every indication is that nobody in Western intelligence saw the Chengdu J-20 coming. While it was known that China was developing a stealthy combat aircraft, the J-20 has emerged earlier than expected and appears to be more mature than the X‑plane or demonstrator that many people anticipated.
The debut of the J-20 had been predicted in a November 2009 interview on Chinese television by Gen. He Weirong, deputy commander of the People’s Liberation Army Air Force. The general said at the time that a “fourth-generation” fighter would be flown in 2010-11 and be operational in 2017-19.
At least two J-20 prototypes were complete by the time the aircraft made its first flight—or at least its first public flight—on Jan. 11, 2011. The two aircraft are distinguished by the detail design of their exhaust nozzles, leading to speculation that one of the aircraft has Russian-supplied AL-31F engines, of the type fitted to the Chengdu J-10, and the other has the Chinese-developed WS-10 engine.
The J-20 is a big aircraft. Although its overall length (around 66 ft.) is not much greater than that of the 62-ft. Lockheed Martin F-22, the main structure from nose to exhaust nozzles is considerably longer. Like the F-22, it has large weapon bays in the lower fuselage and smaller side bays, the latter probably dedicated to air-to-air missiles.
The J-20 echoes the canard configuration of the J-10, but with canards level with, and immediately in front of, the wing. Two small, canted, all-moving vertical stabilizers are fitted. Although no U.S. manned stealth aircraft have flown with canards, a tail-first layout was featured by early Joint Strike Fighter designs, including Lockheed Martin’s—which the J-20 resembles—and McDonnell Douglas’ X-36 unmanned demonstrator.
Stealth design features mostly follow Lockheed Martin F-22 and X-35 practice. A high chine line around the forebody continues through the inlets and upper body, and flat, canted side surfaces blend into a flat underside via a small-radius edge. The canopy shape is also reminiscent of the F-22. The J-20 uses a diverterless supersonic inlet (DSI)—originally developed by Lockheed Martin, DSI technology is now used on the J‑10B, JF-17 and (according to one report) the Saab Gripen JAS 39E/F.
The rear-aspect view of the aircraft is not as stealthy, a feature also seen on the Sukhoi T-50. This is clearly an intentional trade, eliminating the heavy 2D nozzles of the F-22. In this respect, both the T-50 and J-20 reflect the philosophy behind the pre-1986 Advanced Tactical Fighter studies that preceded the F-22, based on the theory that a fast, high-flying, agile aircraft is relatively immune from rear-quarter attacks.
According to a Chinese paper released on the Internet,(Attenccion! Este paper fue el primer post mio en Zonamilitar. Un par de amigos mios lo han transducido en Englés y lo hemos puesto en el internet. Casi en el mismo tiempo lo he transducdo en Espanol y otra version de mejor Engles y los he puesto aquí en Zonamilitar. El conclusion es Bill Sweetman, el "thinktank"de aviacion de Washingtion, leer foro de CDF o foro de zonamilitar o ambos los dos! Le voy a cobra!
) the main goal of the design was to achieve high speed and maneuverability with the engines that would be available to China in the near future—the AL-31F and WS-10—which do not have the same thrust/weight ratio as the latest Western engines. This resulted in the selection of a delta wing and relatively long body for low supersonic drag, plus large, high-deflection canards to provide agility. The all-moving vertical tails are said to be 40% smaller than conventional fin/rudder designs, and accordingly lighter. Supercruise is probably not attainable with existing engines, but the design looks capable of it, once propulsion technology in China improves.In 2012, China-watchers will be monitoring progress with the flight-test program and looking for signs of work on the many challenging aspects of stealth. A stealth fighter needs multispectral, active and passive sensors to detect and track its targets, and those sensors need to be fused and managed to minimize emissions. Similarly, to operate at maximum effectiveness as part of a networked force, stealth aircraft need effective low-probability-of-intercept voice and data communication systems. These are problems that the U.S. is still wrestling with, after 25 years of work.
There is another, more fundamental question: What is the J-20 for? The fighter is large for air combat—but China, simply because of geographical factors, doesn’t face an adversary fighter force of the kind that the F-22 was designed to counter. At the same time, the J-20 weapon bays are not large enough for most standoff air-to-surface weapons. One possibility is that the J-20 is intended to threaten intelligence, surveillance and reconnaissance assets and tankers, by using stealth and speed to defeat their escorts.
http://www.aviationweek.com/aw/generic/story_channel.jsp?channel=defense&id=news/dti/2012/01/01/DT_01_01_2012_p59-402522.xml
Publicado el 20 de Febrero de 2011
Tengo que cambiar de laburo e ir a escribir notas a Aviation Week.
El analisis de las superficies de sustentacion tambien viene de otro informe publicado donde hablan de las decisiones de compromiso que se fueron tomando. Anda publicado en este tema tambien.
O sea, no dice nada nuevo y se basa en cosas ya publicadas o que hasta yo puedo delirar.
Duwa
Master of the Universe.
Yo creo que para los chinos, dentro de la 5ta gen va a ser exportable el hipotético J-18 (era esa la designación?). Ese tiene pinta de ser mas multirol y flexible que el J-20, y menos grande, menos especifico y menos caro que el J-20. El J-20 me parece que es demasiado especifico para la estrategia de China y con ciertas ideas de empleo muy especificas. Hay que ver si sal el J-18, que sera como un F-18, mientras que el J-20 yo lo asocio con un Mig-31.
Pero los chinos nunca afirmaron que vayan a exportar la joya de la corona....
Correcto, más o menos.
Hay 2 possibilidades por ahora:
1. Como lo que dijiste, pero sea SAC J-19 (?), que es GRANDE ( un "camion de bombas" ), quiza más grande que J-20, bi-motor, sin carnard, con todas systemas avionicas poco menos fuertes que las de J-20 - más economico, pero lleva una cabeza casi lo misma que J-20 - un ASEA grande, muy bajo de RCS ambos de frontal y de total (mejor que Tifone y Rafale), "internal weapon bay", multirole, no saben aún si se puede supercruise o no. China tendria que producirlo con una gran candidad.
La perimer linea de defensa china es J-11B (hi) y J-10B (muy pronto,lo, ahora es J-10A ); en el recien futuro será J-20 (hi) y J-19 (lo). Muchos expertos no estan acuerdo con como lo que piensan Washington que J-20 es como un Mig-31. El motivo principal de J-20 es "Supermacia Area" (Air Superiority) como hace F-22A. Repeto: Si que J-20 se puede hacer como lo que piensa Sweetman, pero ese no es su prioridad. J-20 = Air Superiority! Punto.
2. un-motor version de J-20 a la "F-35" - creo que será más tarde que J-19, porque hay que esperar su motor a maturar.
Ambos los dos competirán por contracto de 5 gen naval (PLAN) despues de J-15. Ambos serán muy atractivos para exportar: un precio de p*** madre, con mucho caráctes de 5 gen, con aún menos RCS frontal ( y internal weapon bays) y AESA más fuerte se pueden vencer Eurocarnards, es possible que se pueden más o menos "hold its own" contra a F-35 y PAK FA.
---- según los rumores
