思维特曼对Ｊ－３１的评论（原创翻译贴）

http://www.aviationweek.com/Blog ... 2-8479-a6e20a1cb3e5

China's New Stealth Fighter. Not a repeat from December 2010.
Posted by Bill Sweetman 10:38 AM on Sep 16, 2012

中国的新型隐形战斗机。本文章不是2010年十二月的翻版。

The US defense secretary is on his way to Beijing. Time to unveil a new stealth fighter...

美国国防部长马上要到来北京了。又该泄露一种新型的隐形战斗机了。

Short take-off and vertical landing has been one of the two driving requirements behind the Joint Strike Fighter design, the other being stealth.

垂直起降能力和隐形能力是联合攻击战斗机的两大设计要求。

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.

垂直起降意味着F-35只能用一个发动机。为了解决垂直起降的问题F-35不但需要把武器舱放到驾驶舱的后面而且还要把发动机往前放。这样做不但可以减短旋转轴的长度还可以解决发动机喷口所带来的飞机平衡问题。

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.

这么做限制了武器舱的内存和形状。武器舱被分成四个部分：两个空空导弹舱和两个对地攻击仓。根据Am Butler这个星期在Aviation　Ｗｅｅｋ所做的报道，由于F-35的武器舱围绕着飞机发动机，这个部位不但容易发热而且还容易产生噪音。

If you ever wondered what a JSF might look without those constraints, we now have a live, physical example.

如果你想知道没有这些限制的联合攻击战斗机是什么样子的话。。。我们现在有一个活生生的例子。

Unfortunately...

很不幸。。。

..it's Chinese.

它是中国人造地！

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.

一张新式沈阳隐形战斗机（好像编号是J－３１)的照片最近在中国的军坛上疯传。照片中不但有飞机的真面写真而且还有可用于参照的市售飞机拖车。不过由于拍摄距离透视效果完全被图像噪声掩盖了。爬墙党故意的吧？

Sheesh, guys, can't you make it a challenge?

天啊。你们是不是要挑战我们啊！？

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.

如果没看错的话Ｊ－３１的翼展和Ｆ－３５差不多，也是３７．５英尺。它比Ｆ－２２要小（比歼２０要小很多）。个人感觉现在它在用ＲＤ－９３发动机－也就是中国为了装备ＪＦ－１７而大批量进口的俄制发动机。估计它以后会用中国发动机。

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.

从侧边看，Ｊ－３１的发动机装在放主起落架的舱壁之后。因为他们不需要为升力风扇的布局而操心，Ｊ－３１的设计者把主武器舱放在飞机的中心线上。不知道他们会怎样通过改变进气道的布局来增大内部容量。

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.

总的来说，Ｊ－３１不像是Ｊ－２０的竞争者－它更像一个配角。

And if you wonder about the detail similarities of the shape to the F-22 and F-35, remember this quote from 2010:

如果你为它和Ｆ－２２和Ｆ－３５长的很像而好奇的话，请切记２０１０年的报道：

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.

骡马的首席信息安全官报道：仅２００９年一年，骡马发现有六道八个分包商的电子邮箱和网页被黑客光顾过。http://www.aviationweek.com/Blog ... 2-8479-a6e20a1cb3e5

China's New Stealth Fighter. Not a repeat from December 2010.
Posted by Bill Sweetman 10:38 AM on Sep 16, 2012

中国的新型隐形战斗机。本文章不是2010年十二月的翻版。

The US defense secretary is on his way to Beijing. Time to unveil a new stealth fighter...

美国国防部长马上要到来北京了。又该泄露一种新型的隐形战斗机了。

Short take-off and vertical landing has been one of the two driving requirements behind the Joint Strike Fighter design, the other being stealth.

垂直起降能力和隐形能力是联合攻击战斗机的两大设计要求。

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.

垂直起降意味着F-35只能用一个发动机。为了解决垂直起降的问题F-35不但需要把武器舱放到驾驶舱的后面而且还要把发动机往前放。这样做不但可以减短旋转轴的长度还可以解决发动机喷口所带来的飞机平衡问题。

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.

这么做限制了武器舱的内存和形状。武器舱被分成四个部分：两个空空导弹舱和两个对地攻击仓。根据Am Butler这个星期在Aviation　Ｗｅｅｋ所做的报道，由于F-35的武器舱围绕着飞机发动机，这个部位不但容易发热而且还容易产生噪音。

If you ever wondered what a JSF might look without those constraints, we now have a live, physical example.

如果你想知道没有这些限制的联合攻击战斗机是什么样子的话。。。我们现在有一个活生生的例子。

Unfortunately...

很不幸。。。

..it's Chinese.

它是中国人造地！

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.

一张新式沈阳隐形战斗机（好像编号是J－３１)的照片最近在中国的军坛上疯传。照片中不但有飞机的真面写真而且还有可用于参照的市售飞机拖车。不过由于拍摄距离透视效果完全被图像噪声掩盖了。爬墙党故意的吧？

Sheesh, guys, can't you make it a challenge?

天啊。你们是不是要挑战我们啊！？

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.

如果没看错的话Ｊ－３１的翼展和Ｆ－３５差不多，也是３７．５英尺。它比Ｆ－２２要小（比歼２０要小很多）。个人感觉现在它在用ＲＤ－９３发动机－也就是中国为了装备ＪＦ－１７而大批量进口的俄制发动机。估计它以后会用中国发动机。

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.

从侧边看，Ｊ－３１的发动机装在放主起落架的舱壁之后。因为他们不需要为升力风扇的布局而操心，Ｊ－３１的设计者把主武器舱放在飞机的中心线上。不知道他们会怎样通过改变进气道的布局来增大内部容量。

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.

总的来说，Ｊ－３１不像是Ｊ－２０的竞争者－它更像一个配角。

And if you wonder about the detail similarities of the shape to the F-22 and F-35, remember this quote from 2010:

如果你为它和Ｆ－２２和Ｆ－３５长的很像而好奇的话，请切记２０１０年的报道：

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.

骡马的首席信息安全官报道：仅２００９年一年，骡马发现有六道八个分包商的电子邮箱和网页被黑客光顾过。