關於殲-20的優越性能，
美國軍方說話了!
美國空軍表示，美國及其盟國共同研發的第五代戰機F-35與所謂的中國第五代戰機殲-20不可同日而語。
美國空軍參謀長古德芬上將(General David Goldfein)8月10日在五角大樓說，拿中國的殲-20戰機跟他曾經駕駛的F-117戰機做比較更加合適，因為兩者都只具備非常初級的隱形作戰能力。
殲-20被視為中國最先進的隱形戰鬥機，預計未來兩年內正式服役。美軍的F-117戰機在1990年代投入實戰，2008年退役。
中國殲-20技術可能源自美軍F-117
1999年，在參與北約組織對南斯拉夫聯盟的一次轟炸行動中，美軍當時最先進的一架F-117戰機被擊落。據信，這架戰機的殘骸後來被運到了中國，並成為研發殲-20所依賴的重要技術。
古德芬上將說，F-35戰機側重聯網作戰，而且聯網作戰甚至在飛行員登上飛機前就啟動了。
美國空軍8月2日宣佈了第一個獲得初始作戰資質的第五代F-35A戰機飛行隊，稱會努力在明年年底前將F-35A作戰飛行隊派駐到太平洋和歐洲戰區，應對那裏越來越大的安全挑戰。
美國海軍陸戰隊已經在2015年宣佈了第一個獲得初始作戰資質的F-35B戰機飛行隊，預計在2017年初將這支分隊部署到日本美軍基地。
取自美國之音中文部
不過我在美國之音英文版找不到這則新聞(看有沒有人可以找一下)
下面是美國國防部網站登的原文，以及國家利益網站的相關報導
他應該不是說J-20跟F-117一樣只具備初級的隱形能力
而是說，他認為J-20跟F-117一樣是封閉的單一平台
但F-35是家庭網路般的聯網作戰
重點是，美國並沒有J-20的詳細資料
所以美國當然只能認為J-20只是個單一作戰平台的隱形戰機
這個要等中國放出相關消息才可能知道
美國國防部的原文
http://www.defense.gov/News/Transcripts/Transcript-View/Article/911083/department-of-defense-press-briefing-by-secretary-james-and-gen-goldfein-on-the
Q: (Inaudible). My question is, there is some new reports comparing the Chinese new fighter jet J-20 to the U.S. F-35 and end of the (inaudible) T-50 and how would you evaluate the new Chinese fighter jet, like J-20, and the J-31; and whether – you know you saw how would development of this new fighter jet change the situation in South China Sea and the East China Sea?
GEN. GOLDFEIN: So I would tell you that as a first generation low observable pilot who flew the F-117, it's – that’s a more relevant comparison with first gen than fifth gen because the first generation low observable technology F-117 was reasonable one for one comparison against a J-20 or other aircraft because it was a platform centered discussion. When I took off in the F-117 I actually had a switch creatively named the stealth switch and when I pushed it, all my antennas stowed, all my radios turned off and the last thing I did before crossing the line was lower my seat to become a smaller target.
But the reality is that it was single domain, it was a closed system and it was a sequential way of applying air power because I was always going to be out in front of anybody else on the ground or at sea. The F-35, now since you're asking about F-35, J-20 is a completely different mindset. It starts talking in the network before the pilot even climbs the ladder. It starts comparing information, it starts placing symbology on the visor of the pilot.
That symbology is replicated not only in the displays but across the network of everywhere it's joined. So when we apply fifth generation technology, it's no longer about a platform, it's about a family of systems and it's about a network and that's what gives us an asymmetric advantage so that's why when I hear about an F-35 versus J-20, it's almost an irrelevant comparison because you really got to think about a network versus a network. This is combat in the information age.
So you're – I think you'll see us focusing far more on the family of systems and how we connect them together and far less on individual platforms.
美國國家利益The National Interest
寫的相關新聞
http://nationalinterest.org/blog/the-buzz/the-reason-why-americas-f-35-would-crush-chinas-j-20-stealth-17315
The Reason Why America's F-35 Would Crush China's J-20 Stealth Fighter in Battle
Dave Majumdar
August 10, 2016
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The United States Air Force would maintain an “asymmetric” advantage over potential adversaries in the Western Pacific even after the Chinese People’s Liberation Army Air Force inducts the Chengdu J-20 stealth fighter into operational service. That’s the contention of the service’s top uniformed officer—who was asked about the potential geopolitical implications of the introduction of the new Chinese warplane.
“When we apply fifth-generation technology, it’s no longer about a platform, it’s about a family of systems,” Air Force chief of staff Gen. David Goldfein told reporters at the Pentagon on Aug. 10. “It’s about a network and that’s what gives us an asymmetrical advantage, so that why when I hear about an F-35 versus a J-20, it’s almost an irrelevant question.”
Indeed, as Goldfein noted, the Air Force will likely to continue its focus on a family of systems approach where networking and the sharing of data are key instead of fixating on the performance of individual platforms. A direct comparison of the Lockheed Martin F-35 and the J-20—in Goldfein’s view—would harken back to the his days of flying the Lockheed Martin F-117A Nighthawk stealth fighter—which was almost entirely cut off from outside contact when buttoned down to penetrate enemy airspace. “You’ll see us focusing far more on the family of systems and how we connect them together and far less on individual platforms,” Goldfein said.
While Goldfein used the Nighthawk as a comparison—he probably did not intend to suggest that the J-20’s systems are quite as basic as the 1980s-era F-117. While accurate information about the J-20 is scarce, there are indications that the Chinese aircraft is equipped with a phased array radar, a robust electronic warfare systems and an electro-optical/infrared sensor that is similar in concept to the F-35’s systems. However, while it is possible that the Chinese aircraft might have decent sensors—Air Force officials have suggested that the J-20 lacks the “sensor fusion” and networking to be as effective as the F-22 or F-35.
One area that the Chinese are almost certainly lacking is what Air Combat Command commander Gen. Herbert “Hawk” Carlisle once described to me as “spike management.” Fifth-generation aircraft such as the F-22 and F-35 have cockpit displays that indicate to the pilot the various angles and ranges from which their aircraft can be detected and tracked by various enemy radars. The pilots use that information to evade the enemy by making sure to avoid zones where they could be detected and engaged. It is a technology that took decades for the United States to master—through a lot of trial and error.
Meanwhile, at the same press conference, Air Force secretary Deborah Lee James decried the possibility of facing another year where the Congress fails to pass a budget. Even if Congress passes a full year continuing resolution (CR)—which maintains the previous year’s spending levels—it would massively disrupt the Air Force’s procurement efforts because the service would not be able to award new start program contracts. “We certainly hope that won’t be the case, we know the Congressional staffs are working very hard even while their members are back home this summer, but we are hearing that either a six-month CR or one-year CR is at least a possibility,” James said.
Indeed, Congressional sources are not optimistic about the prospects for a new budget in the fall. Thus, the Pentagon faces additional budget turbulence even as it grapples with a readiness crisis.
Dave Majumdar is the defense editor for The National Interest. You can follow him on Twitter: @davemajumdar.
Image: Flickr/Official U.S. Navy/CC by 2.0
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2017年如果殲20服役，假如像這篇文章講的它只有1983年服役的F-117程度，那中美技術差距變成了34年
以純硬體角度來說這個「差距愈來愈大」的現象並不合理，但就如上一篇所述，美國認為platform vs. network，是根本不同層次的較量
然而
美國軍方和武器開發商以及拿專案的智庫，針對假想敵能力的評語都是不客觀的，至少外界能看到的評語都不可能客觀
需要爭取經費擴大採購量或開啟新計畫，或開發計畫遇到成本上漲技術受挫，國會國防部基於「太貴、不需要」理由想砍預算砍計畫時，美國的假想敵會變得非常強大先進馬上就要把美軍踩到腳下了
同樣需要擴大採購或計畫遇到挫折，輿論質疑焦點在「不符需求、缺點一堆」，國會國防部想砍計畫時，美國的假想敵的同級武器在這個計畫的成果面前是毫無招架之力的
現在F-35的情況是後者，太多人覺得這個計畫是坨屎，應該擦掉，所以計畫保衛者的發言就是說F-35超級無敵強大
胡不扯 wrote:
關於殲-20的優越...(恕刪)
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