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http://tinyurl.com/2cgosb2 What China's Stealth Fighter Means Jan 10, 2011 By David Fulghum, Bill Sweetman, Robert Wall Washington, Washington, London With the surprise rollout and high-speed taxi tests of China’s newest J-20 fighter, a stealth prototype, the U.S. Navy’s top intelligence official admits that the Pentagon has erred in its estimates of the speed with which Beijing is introducing new military technology. (驚訝於J20的推出和試跑,美國海軍官員承認對於中國推出新武器 的速度估計錯誤) The aircraft’s existence was not a surprise to the intelligence community, but “one of the things that is . . . true is that we have been pretty consistent in underestimating the delivery and initial operational capability of Chinese technology weapons systems,” says Vice Admiral David J. Dorsett, deputy chief of naval operations for information dominance and director of naval intelligence. Two recent examples of misanalyses have been the J-20 fighter and the DF-21D anti-ship ballistic missile (AW&ST Jan. 3, p. 18). Moreover, there is evidence that China’s advances include high-performance engines and missiles that display a new level of technical maturity and performance. (一位美國海軍主管情報及資訊管制的中將說,他們並不驚訝於此機 的存在,但他們一直低估了中國推出以及投入新武器服役的速度。 近期兩個例子為J20和DF21D。另外,中國在高性能引擎及飛彈 上的進步也顯示了技術成熟度和能力上了個新台階) “In terms of the [J-20] stealth photos, it’s not clear to me when it’s going to become operational,” Dorsett says. “Do we need to refine our assessments better? I think so.” Other Washington-based intelligence officials say they are watching the J-20’s testing with interest. “They have done several high-speed taxis with the nosewheel off the ground,” says another veteran analyst. “They could still be working out some kinks before they try an actual first flight.” (老美認為他們要改進他們的情報能力。他們不清楚J20何時才能真 正服役,但從中國仍在試跑J20的情況來看,中國很可能仍在進行 第一次試飛前的調整。) There also are a lot of unknowns about the aircraft’s real importance. “Operational impact is a tough call to make at this point, given that this plane, even if it flies, is not going to be a full-up fifth-gen [aircraft],” the analyst says. “In essence, this is going to be a novelty for the next decade before it starts to roll off the series production lines and gets to the line units in any numbers that would impact any of our mission planning. A lot of things can happen, good and bad, between now and then to either speed this up or severely put the brakes on things. (J20能造成的影響目前仍無法清楚得知。就算它能飛,它仍不算一 架完全的第五代戰機。它還很新,現在到未來進入生產線前,一大 堆事都可能發生。) “As far as radar cross section goes, this is not [a Lockheed Martin] F-22, nor should we be thinking that they are going for low RCS right out of the chute,” he says. “We have to keep in mind that this is the first attempt and it’s also the very first prototype of that first attempt. There’s a lot of tweaking . . . before they get to the final version. I see too many people . . . making sweeping assessments. That has always been a mistake.” (就RCS而言,它不像F22,一開始不會有低RCS。它是中國第一 次的匿蹤戰機嚐試,很多部分都要調整。在最後的構型出現前,太 早進行評估永遠是個錯誤。) Engines have been an Achilles’ heel for Chinese high-performance aircraft. The Chinese have not produced an indigenous engine that has the performance they need for a world-class fighter. Under earlier military doctrine, which favored mass over advanced technology, the People’s Liberation Army Air Force was equipped with adapted versions of 1950s-era Soviet aircraft designs using old-technology engines. Analysts offer different assessments of China’s first high-performance engine, the Shenyang WS-10; but recent images of the J-11B fighter—China’s bootleg version of the Sukhoi Su-30—appear to show a nozzle design that differs visibly from the Russian AL-31F and resembles that of WS-10 engines displayed at air shows. (中國的引擎科技一直是其軟肋。但近來在J11B上出現的WS10 引擎顯示了中國在這方面的進步。) Dorsett downplays the immediate impact of the new fighter and new anti-ship missile. “I’m more worried about Chinese game-changing capabilities in nonkinetic [areas such as information dominance, network invasion and electronic warfare],” he says. “I am most concerned about China’s focus on trying to develop [the ability] to dominate the electromagnetic spectrum, to counter space capabilities and to conduct cyberactivities. (該名美國海軍中將認為中國在電磁、太空和網絡方面的威脅比 J20和DF21D所能帶來的要大) “The other concern I have is China’s ability to become operationally efficient in a sophisticated, complex, joint war-fighting environment,” Dorsett says. “I don’t see China with those capabilities now. I do see them delivering individual components and weapon systems [such as the J-20 and DF-21D], but until they acquire proficiency [with them], how competent are they really going to be?” The Chinese military’s self-proclaimed timeline is mid-century, Dorsett notes. In that context, he denies that the Pentagon is overestimating its threat. “I’m not alarmed,” Dorsett says. “I am intrigued by developments and am quite interested in the quantities and different types of technologies that we didn’t expect or overestimated.” (該將領很老神在在。他表示他對於中國在複雜條件下的聯戰能力 比較關注。中國目前仍缺乏這些方面的熟練度,而中國自己宣稱的 時間表是本世紀中才會實現。) There is a marked relationship between China’s booming economy and its military buildup, he points out. But there are equally obvious shortfalls. “The Chinese don’t have a great integrated ISR capability or an anti-submarine capability at all,” Dorsett says. “They don’t demonstrate a sophisticated level in joint warfighting. They are at the early stages of operational proficiency across the board. What would be dangerous is underestimating the timeline of synchronizing these various elements.” (中國目前的反潛、ISR整合和聯戰能力都還在未成熟的早期階 段。但低估其發展整合的速度是危險的。) Dorsett returned to the unexpected appearance of the J-20. “How far along are they?” he asks. “I don’t know. They clearly have an initial prototype. Is it advanced and how many trials, tests and demos do they have to go through before it becomes operational? That’s not clear to me.” However, the evidence of the design’s sophistication is mounting. The J-20 is supposed to carry new weaponry with some of it tucked away internally. China is continuing an effort to expand the military’s air-to-air missile inventory. Although Avic officials have not discussed what comes after the PL-12A radar-guided medium-range missile, new information suggests that work is progressing on several enhanced versions. These include a combined solid-motor, ramjet-powered PL-21. The missile, with a single inlet for the ramjet, may have undergone ground tests last year. (該老美中將稱不知J20實際發展到什麼進度。但一些跡象顯示其 先進的程度,如中航發展中的數個PL12A後繼型飛彈,如衝壓引 擎的PL21。) Work may be slightly more advanced on the PL-12D, a ramjet upgrade of the basic PL-12 with more modest changes to the airframe and less endgame maneuverability than the PL-21 would feature. Chinese industry also appears to be working on the PL-12C with smaller aft control fins for internal carriage on the J-20. The mid-body fins are believed to be similar to the basic PL-12 and PL-12B with improved electronic counter-countermeasures. (另外,還有一個較PL21不先進的衝壓引擎版本,PL12D,也在 發展中。PL12C,有著較小氣動控制面使其得以被收納入J20內 置武器艙內的固燃火箭版本,也在發展中。) The close-in battle would use the PL-10, whose design may resemble South Africa’s Denel A-Darter. China’s ability to increasingly use standoff weapons, also in air-to-ground and anti-ship missile roles, is already affecting planning among potential adversaries. Japanese military officials are showing interest in missiles with greater ranges to be able to engage Chinese threats earlier, and there are discussions in the U.S. about the need for weapons with greater engagement capability. (近戰用的PL10近似A-Darter。中國進展中使用空對空/地的能 力已影響多個潛在對手,包括美國和日本的國防計劃) Dorsett also expanded on earlier remarks about the DF-21D missile by U.S. Navy officials. “[U.S. Pacific Command’s] assessment is that it has reached an initial operational capability,” he says. “They’ve tested it over land sufficient times that the missile system itself is competent and capable. Could they start to employ that in a fielded, operational [environment]? I think so. [However,] there is a question of fusing all the information they need for targeting. There are still some [unknowns] about how proficient they would need to be to fully deploy it at this point.” Meanwhile, the Navy has changed its assessment of the DF-21’s ability to threaten a ship. Until now, the service has essentially rated as “poor” the possibility of China’s hitting an aircraft carrier with a ballistic missile. (中國已多次在陸上測試DF21D。美國太平洋司令部的評估是其已 達到初始作戰能力的地步。但對於中國有多少能力融合標定目標所 需的資訊仍不清楚。到目前為止,美國海軍仍估計中國用BM擊中 航艦的機率為不佳。) “The technology that the Chinese have developed and are employing in the DF-21 system has increased their probability of hitting a maneuvering target with a salvo of several missiles,” Dorsett says. “What that probability is, we don’t know. I’m assessing that they don’t know. To our knowledge they haven’t test-fired this over water against a maneuvering target.” (中國在發展中的科技已增加在齊射條件下BM擊中航艦的機率。 但機率為何?老美不知道,可能中國自己也不知道。中國目前未有 對海上機動目標試射該飛彈的紀錄) That leaves Dorsett with the problem of improving intelligence-gathering to make the Pentagon’s predictions more reliable. “One area we haven’t made much progress on was processing, exploiting and disseminating [data],” he says. “It’s high on our list for the upcoming year. We’re tackling imagery exploitation first. I think an awful lot can be automated. You don’t need to look at every piece of electro-optical imagery. You need tools that alert you to key issues.” (該將領聲稱自動化反PS/偽裝的科技將是改善情報作業的重 點。) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 96.238.154.155
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