b*****2
发帖数: 11103 | 1 Bill Sweetman ：China's New Stealth Fighter. Not a repeat from December 2010.
砖家：土鳖的新隐形机——不是2010年11月的火星帖。
The US defense secretary is on his way to Beijing. Time to unveil a new
stealth fighter...
米防长正在去帝都的路上，适逢为新隐形机揭幕的时刻....
Short take-off and vertical landing has been one of the two driving
requirements behind the Joint Strike Fighter design, the other being stealth.
追求短距及垂直起降能力（STOVL）是JSF的两个驱动因素之一，之二便是隐形能力。
STOVL dictated the single engine, and the STOVL solution chosen for the F-35
demands a big vertical bay behind the cockpit, and a main engine located
unusually far forward, to keep the driveshaft length within reason and to
put the
lift-cruise nozzle in the right longitudinal location for balance.
STOVL采用了单发方案，使得球电的座舱后面安置了一个巨大的垂直的升力风扇舱室，
发动机也突破常规地安置在更靠前的位置，好将传动轴的长度限制在合理范围内并与垂
直喷嘴保持平衡。
This constrains the weapon-bay volume and shape, and effectively subdivides
the bays into four zones - two AAM bays and two heavy store sections. As Amy
Butler reports in Aviation Week this week, too, the weapon bays, wrapped
around the engine, get hot and noisy.
这些都制约了飞机的武器舱的外形和大小，事实上把武器舱割裂为四个部分，两个空空
导弹弹仓，两个重载荷弹仓。就如Amy Butler本周在航空周刊上报道的一样，弹仓紧紧
环绕于发动机周围，承受着高温和高震动的考验。
If you ever wondered what a JSF might look without those constraints, we now
have a live, physical example.
如果你猜想，要是JSF甩开这些包袱会是个啥样，那我们现在正有一个活生生的例子摆
在眼前。
Unfortunately...
倒霉的是。
..it's Chinese.
它是土鳖的。
One of the photos of the new Shenyang stealth fighter, apparently designated
J-31, that appeared on Chinese defense websites over the weekend is such a
colossal gimme that it has to have been deliberate. Direct head-on shot?
Check.
Commercially available aircraft tug? Check. Extreme telephoto, so that
perspective effects are lost in the noise? Check.
这是一张新型的沈飞隐形战机的照片，似乎叫J-31，周末呈现在中国的防务论坛上，这
一如此大方的赠礼，只能说是经过精心的谋划。正面免冠照？对了。商用的飞机牵引车
？对了。超长焦镜头？以至于透视效果都淹没在图像噪点里？也对了。
Sheesh, guys, can't you make it a challenge?
靠，伙计，你能不能别玩我？
The J-31's wingspan is an F-35-like 37.5 feet, unless my Soviet-watching
skills have deserted me. This makes it smaller than the F-22 and
considerably smaller than the Chengdu J-20. A good early guess is that the
engines are Klimov RD-93s - imported in large numbers for the JF-17 - with a
Chinese-built engine to follow.
J-31跟球电相仿的翼展约为37.5英尺，除非我警惕的无产阶级火眼金睛把我欺骗了。这
使得该机小于F-22，更远小于成飞J-20，初步稳妥地猜测，发动机是克里莫夫RD93S，
之前有为JF-17大量进口过，接下来会代之以土鳖国产发动机。
Turning to the side view of the jet, it looks as if the engines are
installed to the rear of the bulkhead that carries the main landing gears.
And with no lift fan bay to worry about, the designers have been able to
install long weapon bays on the centerline: what will be interesting is how
the inlet ducts are routed to optimize internal space.
转到侧面去看这架战机，发动机似乎是装置于起落架舱室的后部，而且没有令人头疼的
升力风扇，设计者们便可在机体中央安置更长的武器弹仓:而进气道该选择何种路径以
便优化内部空间，就会很有趣了。
Overall, the most important point is that the J-31 does not look like a
competitor for the J-20 - but as a complement to it. Which, again, might
point to the new fighter being a JSF to the J-20's F-22.
总而言之，最重要的一点是J-31看起来并非是J-20的挑战者，更像是一个它的后援。这
一点更说明这个新机型之于J-20，正如JSF之于F-22一样。
And if you wonder about the detail similarities of the shape to the F-22 and
F-35, remember this quote from 2010:
而如果你对它在细节上与F-22和F-35的相仿感到讶异时，别忘记引自2010年的这条消息：
In the past year (2009) alone, Lockheed Martin found “six to eight
companies” among its subcontractors “had been totally compromised –
emails, their networks, everything” according to Lockheed Martin chief
information security
officer Anne Mullins.
“仅在去年（2009）一年，洛马就发现它的‘六到八个’分包商，‘已经完全失密了，
从电邮往来、到网络链接乃至一切’”，洛马首席信息安全主管Anne Mullins如是说。 | n******7
发帖数: 12463 | | R*I
发帖数: 1840 | 3 又是Bill Sweetman？嘿嘿，这家伙上次不是因为批评F35(call it a flop)，被
Aviation Week停职了么？
顺便问一句：难道F-35A也有升力风扇这些乱七八糟的东西? | x****u
发帖数: 12955 | 4
没有，但是三个型号的整体布局都是一样的，好保持最大限度的零件通用性
【在 R*I 的大作中提到】
: 又是Bill Sweetman？嘿嘿，这家伙上次不是因为批评F35(call it a flop)，被
: Aviation Week停职了么？
: 顺便问一句：难道F-35A也有升力风扇这些乱七八糟的东西?
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