主题：【原创】关于四代 -- 晨枫
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参数变化，作者，声望:1；铢钱:0。你，乐善:1；铢钱:-1。本帖花:1
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参数变化，作者，声望:1；铢钱:0。你，乐善:1；铢钱:-1。本帖花:1
因为苏联把米格23、F111之类变后掠翼飞机单独划了一代，而美国是都归在第二代。
而且也是教改班的。
我这一届，去空天海的人数都差不多，很多航空的同学做的东西是我从来没想过的，很有生机。但是发动机依然是短板，az09说得太对了，这个工艺要求比其他的高多了
老头子是六十年代西北工大，搞航空的。
小时候，我的读物便是各国空军的资料。
后来，老头子也改行，离开了航空。
我想假如，老头子看都丝带心情一定会很激动。
怀念我敬爱的父亲！一个见证中国航空航天事业发展的英雄。
四代由于20年的时间差，加上发动机推力不足，只有在气动上更进一步才行。
我本人是工程师，知道工程是积跬步以至千里的。但是其实科学也不是灵机一动，也是一点点做出来的。现在的诺贝尔奖很少有一人独享的，就是因为很多时候的成果都是水到渠成的，到处开花。回到过去，就算是狭义相对论，诞生之前十年，也有洛伦兹一代人做了大量铺垫工作，爱因斯坦综合出了合理的哲学和物理解释。
Is This China’s First Stealth Fighter?
They could be the products of a Chinese government misinformation campaign. They could be clever Photoshop jobs by Chinese aviation fanboys. Or they could be the real thing: the first hard evidence of the long-rumored Chengdu J-20, China’s first stealth-fighter prototype.
The above photo and several others surfaced over the Christmas weekend on Chinese Internet forums, catching the eye of Aviation Week fighter guru Bill Sweetman. Sweetman, a noted skeptic in the sometimes enthusiastic world of fast-jet journalism, stressed that the pics might be fakes. Fantastical Photoshop art is a hallmark of Chinese military-themed Websites. See the giant, flying “heli-carrier,” or the submarine flattop — both creations of over-excited Chinese Photoshoppers.
But there are hints that the J-20 photos are for real — and that much clearer shots exist, somewhere. “Rumor has it that better shots have put in transient appearances on Chinese Websites before being zapped by the censor,” Sweetman wrote. That those rumored photos were yanked is itself perhaps proof that Beijing really does have a new fighter. “In China’s military fan Web culture, the rapid intervention of the censors is always a boost for the credibility of the poster,” aviation journalist Rick Fisher told Sweetman.
Most convincingly, the airplane depicted in the snapshots apparently has many of the right characteristics for a fifth-generation stealth-fighter prototype: a chiseled front-section, triangular wings, all-moving tailplanes. In fact, the supposed J-20 seems to combine the front fuselage of the U.S. Air Force’s F-22 with the back half of Russia’s T-50 stealth prototype, which appeared a little less than a year ago.
If it’s real — and that’s a big if — the J-20’s appearance could signal a big step forward for the Chinese air force, which to date relies mostly on airplanes bought from Russia or reverse-engineered from Russian or Israeli designs. Panicky Western air-power advocates, who a year ago claimed America would be “less safe” if the Pentagon pressed forward with plans to end production of the F-22 stealth fighter at 187 copies, might just announce the end of America’s 50-year dominance of the skies. Alarmists made similar claims when the Russia’s new T-50 fighter first flew, despite that plane’s many non-stealthy attributes and dubious production prospects.
The Pentagon hasn’t had a chance to comment on the J-20 photos, but is likely to remain sanguine. In deliberations over the F-22, Secretary of Defense Robert Gates acknowledged that the Chinese were working on a stealth fighter, but insisted the Communist country would have “no fifth-generation aircraft by 2020,” while the U.S. would have more than a thousand F-22s and F-35s. In the year-and-a-half since Gates made that claim, the Pentagon has delayed F-35 production and China has apparently accelerated its own stealth development — alleged J-20 photos aside — but the spirit of Gates’ assertion remains valid.
Even if the photos are real and the J-20 exists as more than blueprints, there’s probably no cause for alarm. The U.S. flew its first stealth prototypes — the YF-22 and rival YF-23 — in 1990; the J-20 hasn’t even flown yet. It took 15 years for the F-22 to enter front-line service; considering China’s quality-control problems with high technology, it could take a decade or more for the J-20 to appear in numbers that make any difference in the Pacific balance of power. Gates might have been slightly off in his assessment of the Chinese air force, but probably not by much.
And that’s all assuming Beijing’s Christmas stealth-fighter surprise isn’t all just Photoshop magic. With so little good information on military hardware coming out of China, fighter fakery is a real prospect. In which case, we’ll keep waiting for China’s first stealth fighter to make its true debut.
Update, 7:28 EST: There’s another photo up — the clearest yet. “The impression here is of a big, long aircraft, 70+ feet from nose to tail, which would make sense for a number of reasons,” Sweetman wrote in reaction. He speculated the J-20 might have “lower supercruise performance and agility than an F-22, but with larger weapon bays and more fuel.”
“Why would China need or want a short-range stealth aircraft?” he continued. “Any targets with defenses that call for that capability are a long way from the mainland. Also, the bigger that the aircraft is, the more likely it is that it is a bomber as much as, if not more than, a fighter.”
http://www.wired.com/dangerroom/ ... st-stealth-fighter/
1990年美帝的YF-22和YF-23初经人事，不知TG现在是否也尝到个中美妙滋味？网上流传一组打了马赛克的J-20艳照，有人像复读机只会一句“阿娇还是处女“，有人认为陈老师已经中出n次，还有些砖家叫兽认为这是战略忽悠局在忽悠着你
中国的成年男性喜欢的网站在疯传这些图片。图片上的妹子看起来具有很多最新一代隐飞的萌点，胸前曲线凹凸有致，三角形的下着充满诱惑，还有扭来扭曲的丰满臀部。这妹子正面的姿势是美国F-22的，后入的动作有俄罗斯T-50风格
J-20萌妹子的出现震动了广大业界大叔，他们本以为这个妹妹要过个十来年才会出面接客。J-20妹子小猫步乃是TG的的一大步，从此PLA不用整天对这露西亚或者犹太国的新款式打飞机了
纠结不已的分析家还在为F-22 和F-35妹子担心，难不成好日子到头了？
当初露西亚的小loli T-50登场的时候他们也是神神叨叨的
五角大楼刚刚推迟了F-35量产计划，让想买一个回去暖被窝的诸位好生着急，结果TG就乘势加快了妹子养成计划。
不过J-20还没有真正的体验过“飞”入云端的感觉，当年F-22可是调教了15年才成为合格的奴仆的。考虑到TG在各种新道具上的质量问题，起码要过10年J-20才能成为喷出太平洋另一半的妹子。盖茨可能会多看TG家的小mm几眼，但是应该不太多
美国太平洋总部的海军上将Robert Willard说，中国威胁航空母舰的弹道导弹，已达到了“初始作战能力”。
这一年，中国的反舰弹道导弹正在进行广泛的测试，并接近部署。观察家认为，中国去年开始生产导弹发动机，而中国军方正在准备将其部署在韶关的核导弹基地。
By Kathrin Hille in Beijing
Published: December 28 2010 11:58 | Last updated: December 28 2010 11:58
A new Chinese anti-ship missile that will significantly alter the balance of military power in the Pacific is now operational, according to a senior US commander.
Admiral Robert Willard, the top US commander in the Pacific, said the Chinese ballistic missile, which was designed to threaten US aircraft carriers in the region, had reached “initial operational capability”.
His remarks signal that China is challenging the US ability to project military power in Asia much sooner than many had expected.
The US and other countries in the Pacific region are increasingly concerned at the speed with which China is developing its naval power. Japan, for example, recently decided to refocus its military on the potential threat from China.
“So now we know – China’s [anti-ship ballistic missile] is no longer aspirational,” Andrew Erickson, an expert on the Chinese military at the US Naval War College, said in response to Adm Willard’s comments to the Asahi newspaper.
Defence analysts have called the Dongfeng 21 D missile a “game changer” since it could force US aircraft carriers to stay away from waters where China does not want to see them. These include the Taiwan Strait where a potential conflict could develop over the self-ruled island which China claims.
The land-based missile is designed to target and track aircraft carrier groups with the help of satellites, unmanned aerial vehicles and over-the-horizon radar. Aircraft carriers and their accompanying ships are unable to defend themselves against such a threat.
Aware of the missile’s development, the Pentagon has already started considering ways to counter the new threat, including a new concept for more closely integrated navy and air force operations.
Robert Gates, US defence secretary, said in September, the development of such a missile would force the Pentagon to rethink the way carriers were deployed.
“If the Chinese or somebody else has a highly accurate anti-ship cruise or ballistic missile that can take out a carrier at hundreds of miles of ranges and therefore in Asia puts us back behind the second island chain, how then do you use carriers differently in the future?” Mr Gates asked.
The second chain of islands runs from the Bonins along the Marianas, Guam and Palau, forming a north-south line east of Japan and the Philippines. This line defines what China sees as its “near seas” – waters in which the US navy now frequently operates and are home to US naval bases and allies such as Japan and South Korea.
Adm Willard noted this year that China’s anti-ship ballistic missile was undergoing extensive testing and was close to deployment. Observers believe China started production of missile motors last year and that the Chinese military is preparing a nuclear missile base in the southern city of Shaoguan for their deployment.
Defence analysts have also linked several missile flight tests this year to the new weapon but no conclusive evidence has been available to date.
Adm Willard’s latest comments appear to remove any doubts. The term “initial operational capability” as used by the Pentagon indicates that some military units have started deployment of the weapon and are capable of using it.
Mr Erickson said: “Beijing has successfully developed, tested, and deployed the world’s first weapons system capable of targeting a moving carrier strike group from long-range, land-based mobile launchers.” .
Adm Willard said the new Chinese weapon was still not fully-operational and would probably undergo testing for “several more years”. The key remaining step is a comprehensive test of the entire system at sea, which is much more difficult than test flights over land.
China also needs to deploy more satellites to ensure seamless tracking of a moving target at sea. But defence experts warn that the weapon would immediately be a threat to US carriers because China could make up for a lack in accuracy by launching larger numbers of missiles.
这一代的货也没啥，直接跳过去，看来发展得慢有慢的好处，呵呵