People’s Liberation Army internal expert said: The F-20 to F-22 early standards
Recently, the chiefs of the military technical school wrote an article on the Chinese fifth-generation fighter, the J-XX development work, said China’s 5th generation aircraft against the F-22, will not go to imitate the path of Russia’s 1.44 test machine, but will go to imitate the F22 road; In recent years, the Westerner aircraft design and manufacturing capabilities The decline is very powerful, the level of the world’s electronics technology has developed rapidly, the electronic level of our country’s rapid development of electronic levels need to reflect in the fighter came out, no longer suitable of the Russian airframe. The respectable CAC designers will highlight air combat performance of the primary design goals, and give up other multi-functional to ensure air-to-air combat capability of the F-22, so at least the two sides can play for a draw, evenly matched.
F-22 in terms of its performance so far can be regarded as almost perfect, then a reasonable question is the manufacturer of aircraft design are how to contend with F -22? The answer is not surprising, nor difficult. Five fighters are usually multi-role fighters, but versatility is not the same degree in each fighter program.
of the original program of the F-22 multi-function minimum, the program modified its versatility greatly increase. Modified F-22A was accepted by the United States and start the batch equipment. Improved the weight of the “Raptor” has increased dramatically. From early 1990 to the normal takeoff weight of 22 7 tons to now 29.6 tons.
It is easy to understand, fighter planes, for each additional one, take off some of the load should increase.
the fact that limits the aircraft to use more advanced technology. In short: the aircraft is equipped with more features will greatly increase the aircraft takeoff weight, showing increased takeoff weight is a prerequisite for achieving these features not only a model aircraft so, such as the JSF (Joint Strike Fighter) need The project developed three different models of fighter is the same.the
designers have mastered the technology, only from the combat capability in terms of, you can create a very high standard of fighter, the only question is how Chinese people show of military strength in the sky like Americans driving the F-22 fighters in the border of China has begun to show.
combat capability and application technology combining to determine the weight of the fighter level. Can be said that Chinese designers to develop the fighter performance plan, the goal is not now the F-22A, but “hollow” task as the main design objectives in 1995, the YF-22.
look through the existing mastered the intelligence of the Chinese 5th generation aircraft aerodynamic shape, this assertion is undoubtedly correct. Based on this information, the main tactical and technical parameters are aimed at long-range fighter and close air combat capability in the tactical and technical parameters of primary consideration is stealth and mobility.
no matter how the designers of China is very clear existing hands of resources (technical, and perhaps capital) simply copied the Americans will not work alone. China has been looking for a way to solve all the problems to develop 5th generation fighter.
the Chinese side will definitely not out publicity the ongoing 5th generation aircraft development work, lack of true information (though very large) attention led to some confusion. One of which is that the designers of the Group in Chengdu in imitation of the Russian name of the test prototype 1.44. This hypothesis is mentioned in its report by the U.S. Strategic and International Studies Center. Subsequently, the hypothesis has been reproduced by several major foreign publications, and thus a matter of course become a “fact”.
full-motion V-tail design is extremely beneficial for improving aircraft stealth characteristics. Moreover, due to the reduction of the control surfaces and the corresponding control mechanism, but also helps the aircraft to reduce weight and reduced drag. However, apart from the manipulation of the surface load, this design is bound to face a test of flight control system is complicated.
V-shaped tail deflection control is quite complex, a multi-purpose design is bound to increase the flight control system complexity and development risk. The preparation of the flight control software is precisely one of the difficulties of the flight control system design. Wire flight control system applied to the third-generation fighter since the majority of first-class fighter are planted in it and fallen. YF-23 did not receive the favor of the conservative United States Air Force, which is also an important reason.
However, the J-10 aircraft development test flight hit a third-generation fighters miracle “crash” has reason to believe that China’s aviation science and technology personnel to the flight control software the preparation level has sufficient capacity to meet this challenge.
If the V-tail aircraft using thrust-vectoring engines for more than a series of problems may be alleviated, is also beneficial to improve mobility and agility.
YF-23 does not use thrust-vectoring engines, first, that the thrust-vectoring engines in the United States is not fully mature, the use will further increase the development risk, and second, their design ideas over the pursuit of stealth ability. The YF-23′s upper groove tail vents from B-2 aft fuselage design, can reduce the aircraft’s radar cross section area and improve the ability of infrared stealth. This design is appropriate for the bomber, fighter, not necessarily. On the set groove tail vents also makes the engine nozzle can not be vector deflection.
the present situation, the Russian AL-41 thrust vectoring engine has been basically mature, if China’s next generation of fighters using Russian-made or made large thrust thrust vectoring engine will achieve the harmonization of stealth, mobility and agility. Seen from Figure, the end of China’s next generation fighter has been reserved for the thrust vectoring nozzle end of the engine room for maneuver.the
based on information currently disclosed, China’s next generation fighter developed by Shen fly closer to the competitive selection of the United States four generations of machine losing YF-23, but plus a canard.
other wing size has also been reduced, a corresponding reduction of the main wing fuel tank volume. Taking into account the stealth combat, the next generation of aircraft have largely failed to plug external fuel tanks, all fuel must be from inside the tank load. Inter-theater play “world police” global intervention in the United States, the fighter’s flight requirements is relatively high; and the Chinese Air Force homeland defense and the surrounding operations, there is no need to pursue a particular voyage. This choice is acceptable.
two compared to China’s next generation fighter fuselage length was significantly longer than the F-22, which means that even if the aircraft has a maximum cross-sectional area equivalent to the case of China The next-generation fighter can get a smoother cross-sectional area distribution and rate of change, which means a smaller cross-supersonic resistance. Difficult to see that China’s next generation fighter to select a supersonic performance, clearly reflects the concept of high-speed attack high-speed interceptor.
in the overall appearance of the next generation of fighters and the YF-23 is very similar to the beginning of the body looks like the forward fuselage and two separate engine compartment directly embedded into a whole wing.
ago set the radar cabin, cockpit, the nose landing gear bay, the avionics compartment and missile compartment within the body. Front-end cross-section of the forward fuselage to approximate an upper and lower symmetrical rounded hexagonal, and then a gradual transition to a circular cross section, and finally in the middle and wings, fuselage fully integrated.