Yak-141 Freestyle (Wallpaper 3)
Monday, October 31, 2011
image dimensions : 1200 x 750
Yak-141 Freestyle (Wallpaper 3)
Three. Yak-141 Freestyle, Yakovlev, Jet, Fighter, Russia, Soviet, Air Force, Attack, Aircraft, Airplane. Photo, image, picture, wallpaper, review, specification.
Yak-141 has a similar radar to the Mig-31, with a similar look down shoot down capbility. F-35 has the advantage of stealth, but not much overall YAK-141 has highera speed advantage F-35 is most likely more expensive Agility is unknown. The Yak-141 (formerly Yak-41) was intended originally to replace Yak-38 for air defence of Kiev class carriers/cruisers, with secondary attack capabilities. Designed for carrier-borne operations as an air interceptor, close air combat, maritime and ground attack aircraft, the Yak-141 has the same multi-mode radar as the MiG-29, although with a slightly smaller antenna housed in the nose radome. It features a triplex full authority digital fly-by-wire system. The Yak-141 continues previous Soviet V/STOL principles, combining a lift and propulsion jet with two fuselage mounted lift jets in tandem behind the cockpit, with cruise power provided by a single Tumansky R-79 jet engine. The R-79 has a rear lift/cruise nozzle which deflect down for take-off while the two lift engines have corresponding rearward vector to ensure stability. The airframe makes extensive use of composites materials, with some 28 percent by weight constructed of carbon-fibre, primarily in the tail assembly, while the remainder of the structure is mainly aluminum lithium alloys. The project began in 1975, but was delayed by financial constraints as well as the protracted development of the engine, which meant the prototype did not fly until March 1989. This development program was cancelled due to termination of Defence Ministry funding. Yakolev OKB continued development in refined land-based and naval combat aircraft forms. Four prototypes were built, two continuing in flight testing until 1995, with the other two used for engine and structural testing. To facilitate sales of the Yak-141, Yeltsin has issued decrees allowing tri- or quadripartite agreements with a number of interested organizations in Latin America and Asia. The F-35's ability to win an air-to-air engagement is drawing increased attention as the U.S. military and industry's focus includes expanding the Joint Strike Fighter's customer base beyond the core purchasing nations. For years, prime contractor Lockheed Martin seemed content to promote the F-35's "strike fighter" capabilities, if only to avoid competing against its other major fighter program, the F-22 Raptor. But with the F-22 not exportable, Lockheed Martin seems keen to talk up the F-35's air combat skills to bolster its chances for new foreign military sales -- namely, to Japan, Turkey and Greece. The contractor tells Aviation Week that the JSF's combination of stealth, multisensor situational awareness, advanced pilot-machine interface and basic aeromechanical performance make it a credible fighter aircraft, too. That is key to several other customers, who cannot afford the so-called high-low fighter mix on which the U.S., U.K. and Italian air forces are planning. But Lockheed Martin is focusing largely on the beyond-visual-range fight, with ranges greater than 18 naut. mi. that executives say will represent 62% of all aerial combat. Another 31% of engagements would fall into the 8-18-naut.-mi. transition range, and just 7% of fighting would be close-in combat where the airframe is stressed the most. Lockheed Martin says it ran the F-35 through the Pentagon's TAC Brawler simulation for air combat systems analysis, using what would be the "ideal" air combat configuration, taking the conventional-takeoff-and-landing F-35A, the only model designed to perform full 9g maneuvers. The aircraft can also reach a 55-deg. angle of attack in trimmed flight, while most fighters, excluding the F/A-18, are limited to 30 deg. The exact performance of the current F-35A configuration -- also known as the 240-4 -- are classified. But a similar earlier standard (240-3) was credited with a maximum speed of Mach 1.67; acceleration from Mach 0.8 to Mach 1.2 at 30,000 ft. in 61 sec.; a top turning speed of 370 kt. at 9g and 15,000 ft.; and a sustained turn capability of 4.95g at Mach 0.8 and 15,000 ft. Moreover, an aircraft with those performance figures would carry two beyond-visual-range AIM-120 Advanced Medium-Range Air-to-Air Missiles (Amraams) in the internal weapons bay.
Three. Yak-141 Freestyle, Yakovlev, Jet, Fighter, Russia, Soviet, Air Force, Attack, Aircraft, Airplane. Photo, image, picture, wallpaper, review, specification.
Yak-141 has a similar radar to the Mig-31, with a similar look down shoot down capbility. F-35 has the advantage of stealth, but not much overall YAK-141 has highera speed advantage F-35 is most likely more expensive Agility is unknown. The Yak-141 (formerly Yak-41) was intended originally to replace Yak-38 for air defence of Kiev class carriers/cruisers, with secondary attack capabilities. Designed for carrier-borne operations as an air interceptor, close air combat, maritime and ground attack aircraft, the Yak-141 has the same multi-mode radar as the MiG-29, although with a slightly smaller antenna housed in the nose radome. It features a triplex full authority digital fly-by-wire system. The Yak-141 continues previous Soviet V/STOL principles, combining a lift and propulsion jet with two fuselage mounted lift jets in tandem behind the cockpit, with cruise power provided by a single Tumansky R-79 jet engine. The R-79 has a rear lift/cruise nozzle which deflect down for take-off while the two lift engines have corresponding rearward vector to ensure stability. The airframe makes extensive use of composites materials, with some 28 percent by weight constructed of carbon-fibre, primarily in the tail assembly, while the remainder of the structure is mainly aluminum lithium alloys. The project began in 1975, but was delayed by financial constraints as well as the protracted development of the engine, which meant the prototype did not fly until March 1989. This development program was cancelled due to termination of Defence Ministry funding. Yakolev OKB continued development in refined land-based and naval combat aircraft forms. Four prototypes were built, two continuing in flight testing until 1995, with the other two used for engine and structural testing. To facilitate sales of the Yak-141, Yeltsin has issued decrees allowing tri- or quadripartite agreements with a number of interested organizations in Latin America and Asia. The F-35's ability to win an air-to-air engagement is drawing increased attention as the U.S. military and industry's focus includes expanding the Joint Strike Fighter's customer base beyond the core purchasing nations. For years, prime contractor Lockheed Martin seemed content to promote the F-35's "strike fighter" capabilities, if only to avoid competing against its other major fighter program, the F-22 Raptor. But with the F-22 not exportable, Lockheed Martin seems keen to talk up the F-35's air combat skills to bolster its chances for new foreign military sales -- namely, to Japan, Turkey and Greece. The contractor tells Aviation Week that the JSF's combination of stealth, multisensor situational awareness, advanced pilot-machine interface and basic aeromechanical performance make it a credible fighter aircraft, too. That is key to several other customers, who cannot afford the so-called high-low fighter mix on which the U.S., U.K. and Italian air forces are planning. But Lockheed Martin is focusing largely on the beyond-visual-range fight, with ranges greater than 18 naut. mi. that executives say will represent 62% of all aerial combat. Another 31% of engagements would fall into the 8-18-naut.-mi. transition range, and just 7% of fighting would be close-in combat where the airframe is stressed the most. Lockheed Martin says it ran the F-35 through the Pentagon's TAC Brawler simulation for air combat systems analysis, using what would be the "ideal" air combat configuration, taking the conventional-takeoff-and-landing F-35A, the only model designed to perform full 9g maneuvers. The aircraft can also reach a 55-deg. angle of attack in trimmed flight, while most fighters, excluding the F/A-18, are limited to 30 deg. The exact performance of the current F-35A configuration -- also known as the 240-4 -- are classified. But a similar earlier standard (240-3) was credited with a maximum speed of Mach 1.67; acceleration from Mach 0.8 to Mach 1.2 at 30,000 ft. in 61 sec.; a top turning speed of 370 kt. at 9g and 15,000 ft.; and a sustained turn capability of 4.95g at Mach 0.8 and 15,000 ft. Moreover, an aircraft with those performance figures would carry two beyond-visual-range AIM-120 Advanced Medium-Range Air-to-Air Missiles (Amraams) in the internal weapons bay.
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