India Province, patriotism and national pride is also very strong, but the India aviation industry lags behind reality, was in fact the West and Russia to entrap the. Accused China of reverse engineering to seek psychological balance, for his dereliction of duty excuse, perhaps is the India air force generals the funny and lovely place. Numerous place week, India has always been China 's environment envy, want what advanced technology weapon, Western and Russian are willing to provide, Russia sold to India aircraft technical level than China but also have high. But this caused India lacked a sense of crisis, rather than drive to establish their complete aviation industry chain. China from 1949after being isolated from the world, long closed without development, almost wasted 30 years gold period, and Japan Taiwan Hongkong there has been a tremendous gap. So to make up the gap is the first task of surpassing. Backward overtake advanced, of course not scratch, backward to reach and advanced the same starting line to start the race. How to achieve the same starting line is the key, otherwise it is lag behind step by step, step by step to chase, catch forever. So to span type develops. In the introduction of Russian aircraft main purpose is not for equipment and confrontation but to digestion technology quickly fill the gap and the shortest path to achieve the same starting line level. Because Chinese pressure is much bigger than India, can only rely on their own, with more foreign exchange, the West and Russia will not put the core advanced to sell things to China, so to seize every possible capture technology resources as soon as possible to learn, digestive, master, to infer other things from one fact. China in the 80's out early and the United States of America honeymoon period began to have access to advanced western technology, J10is the legacy of Western technical reserves, and the United States technical cooperation development projects, but after 89 years, relations between China and the West rupture was sanctions, embargo. The technical project transferred to israel. Through the introduction of Russian technology to China was gradually established a technical ability, but also have the ability to digest at the beginning of 80 time obtain some Western technical reserve. So thanks to Russia, Russia is to make money, but did not think China can so easily understand their technique, there is a saying that" as long as the Chinese at1/3, will be able to do the rest of the2/3" this was forced. In fact, most of the countries in the world are not advanced fighter technology and production capacity, with strong technology in Europe and Israel, if not the United States to allies of the public long-term technical output and support, the small country in Europe after World War II also can not rely through one's own efforts to master such complete aviation industrial capacity. China and the support of Pakistan aviation industrial capacity for the same reason. The United States of America and Soviet aviation industry technical reserve source is from germany. Otherwise they are not so fast master missile, jet and rocket technology. Although India is not China so much pressure but with Pakistan and China, but also in the efforts to develop their own military, one example is the Lca, but the Lca in Russia to help or not completed independent production engines and radar equipment to equip, in today's high quality and high reliability requirements of military production, is not so simple thing, it is western developed country in Europe and Japan, the United States of America technology without the upper support and internal allies a wide range of technical exchanges platform, also may not be so easy to produce as the wind so that the excellent fighter, from the Eurofighter development history, France is the offbeat, other countries, is basically a buy american. In recent years, British Italy before Germany to jointly develop the wind. The Israeli and European advanced weapons, leaving the United States decades of factors, said they were completely independent research and development production of the consequences. China is in a closed and hostile environment to survive, others to be open and aboveboard access technology gift nobody said anything, China from the traces of various scattered technology fragments, puzzles, the study of imitation, plagiarism is said to. A simple question, many countries and regions have won the United States and the Soviet Union advanced weapons, why no ability to master it, Taiwan would have a F16, but Taiwan cannot digest to their own research and produce their own suitable aircraft. Not a want, do not have this capacity and financial resources, Japan has its own R & D aircraft capabilities, but still want to rely on the United States to purchase F35, because his own plane to fast to keep up with the requirement of equipment, even have the ability to develop their5 generation aircraft also needs a long period and money and arms gap, but not to wait, so must rely on the United States of america. All dependence on the United States, and the United States will not put their best equipped to give a little brother, always under the top gear two and other equipment for brothers, so the United States must ensure that their two and other equipment must also be on China's technical advantages, can be assured that his little brother. The American place also have a risk, China J20, Japan 's dilemma, on one hand to direct purchase of F22, but the United States is willing to sell to buy F35, barely support, but the United States has not been able to mass production, itself also has some problems, and ultimately not imagine can quickly equipment, while the their own R & D their5 generation machine time to catch money, huge investment, uncertainty factors such as high, really developed that may also become obsolete, to the six generation day - empty UAV era. China Development J20stealth fighter, and improve their Chinese in four generation machine time is parallel, China must cross in order to get the starting line, otherwise you lose. During concurrent completed aviation industry chain construction, can be said to be a day for three days to live, the development of China 's stealth fighter not only J20, but a series, including Shen Fei has projects in progress, at the same time, the engine also in parallel to chase and breakthrough. Six generation machine has entered the implementation stage China plan, are in hot pursuit of the United States of America pace, in six generation machine on the same starting point of competition. On 5 generation machine, F22is the pioneer, for example, later can quickly grasp and improvement, F22 design in the 80's, size small is not conducive to battle platform in the new technology and equipment after updating, the recent F22also appeared supply system problem, a few degrees of grounding. 5 generation machine system complexity and high investment, once formed, it is difficult to change, if the design problems down to this system project is too big, not as a direct development of the next generation of new aircraft is more cost-effective. J20draw a lot of excellent design experience, the establishment of a sustain period using the effect of the platform, focus is from a systems engineering perspective, rather than a single technical indicators, the system platform, if successful, will be continued in this platform on the input, improve economic efficiency in using. It seems to me that T50and F22 are lack of more development potential, system efficiency is low, the T50design is rough, original intention is not for personal use and may be used for commercial sale, similar to the F35uses, when looking for Chinese cooperation in R & D, but the Chinese response. That is, in the 5 generation machine the high costs of equipment, the system efficiency is a crucial problem, even if the United States now have better design but also do not have the capital to change, the F22 supply if the problem involves the whole system rather than a single system problem, is a very troublesome thing, any changes costs are staggering. Many people now make fun of China overtaking process to rely on the reverse engineering technology, will soon laugh does not come out, China 's5 generation machine goal is must have the stable periodic practical value, the true competition will be the next generation of the six generation system. At that time China will be on show the United States of america.