2012年1月31日 星期二

swtor power leveling 000 cattle - YHO

129668732784375000_175F119 is for the United States fourth-generation fighter (in Russia standards is a fifth-generation) F-22 development thrust-weight ratio of 101-class afterburning turbofan engine, it uses a Pratt and Whitney company with many years of experience and new technologies, on the structure and properties represent the highest level has been put into operation engine. As of June 2011, Pratt and Whitney company was delivered to air force 466-F119Engine, the cumulative flight time of more than 380,000 hours, of which 200,000 hours is the F-22 power plant. Based on the F119 swtor power leveling, Pratt and Whitney company has launched the F135, United States of another being developed in the fourth-generation main battle Figure F-35 "lightning bolt" II the only driving force, have been delivered so far, 23 Trojan carried out 1000, 1450Flight hour and 110 without missing vertical landing, flight availability at 98%. Therefore, "F119 and F135 is today United States two of four generations the only production engine" has become the Pratt and Whitney company most proud of. The beginning of May 2011, Pratt and Whitney F135 test flights of the company donated to the United States national air and Space Museum. 1982Years, the United States air force "Advanced Tactical Fighter (ATF)" program. At that time, Lockheed, Boeing, General Dynamics Corporation a joint programme of YF-22 and NorthroFrye, YF-23 programme made by McDonnell Douglas joint bid, engine, a Pratt and Whitney and General Electric (GE) respectively to PW5000 and GE37 bid. InATF is scheduled to begin at the time United States air force: "ATF is required of aircraft in order to deal with the threats of tomorrow, in order to maintain the United States Air Force's air superiority in the future, ATF must have the best of stealthy, supersonic cruise, integrated avionics and agility. "Compared with the previous generation F-15, ATF has the following characteristics: high mobility and Gao Minjie,High of stealth, cruise at 1.5~1.6 times the speed of sound speed Diablo 3 Power Leveling, short take off landing ability, voyage far. To meet these performance needs, requires the use of engines with a thrust of about 160,000 cattle, 10 levels of thrust-weight ratio, can change the direction of thrust of the capacity (that is, with vectoring nozzle) cruise and low consumption. In addition, also requires high reliability, VictoriaGood repair. This is another challenge to the aero-engine industry. In June 1986, the military entered into manufacturing prototypes with Pratt and Whitney engine contract (3 years earlier than aircraft contracts), the PW5000 changed YF119. In October 1990, YF119 fitted with YF-22 makes its first flight. In August 1991, Pratt and Whitney company development 9Test engine and 33 flight test engines for $ 1.375 billion in contracts, enter "engineering and manufacturing development (EMD)" stage, so the aircraft was named F-22, engine named the F119. In September 1997 with F119-PW-100 F-22 first flight, then after a long flight, until the end of 2005 f-22 has the initial operational capability. The F119 is a small culvert-ratio afterburning turbofan engine, belonging to the more general design in structural design, emphasis on simple, sturdy, mature technology as much as possible, to avoid the development of high risk, and reduced manufacturing costs. The entire engine is divided into core machines, fans, low pressure turbine, Afterburner and nozzle and attachment motivation Kit6 units. In addition there is a third generation dual-redundant full authority digital engine control system (FADEC), the system has self-test, fault tolerance, fault diagnosis and processing capabilities to further enhance the reliability of the engine, and based on integration of aircraft propulsion systems to determine the best parameters of engine. Main performance parameters of the F119 for: maximum thrust of 156,000 cattle, Intermediate thrust 105,000 cattle, total pressure ratio 35, ducted 0.3, turbine temperature before 1577 ¡æ ~1677 ¡æ, maximum diameter of 1.13 metres swtor power leveling, 4.826 metres in length, weight 1360 kilograms. Compared with the early F-15 with F100-200 engine, F119 supersonic without afterburning thrust increase 100%, afterburning-thrust increased50%, part number 40%, reliability, maintainability, and logistics to improve 80%.

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