Chengdu J-20 5th Generation Aircraft News & Discussions

[ZeEa5KPul]

I think he intentionally changed his profile picture to that of Brahmos missiles to annoy posters here .

In my case I find Justin Trudeau more annoying.

 

[azesus]

Gordan Chang should tell Trump China army fight like a girl, that their soldiers wear bikini as army uniform and their men participate in the ufc women's division

 

[Ultima Thule]

Gordan Chang should tell Trump China army fight like a girl, that their soldiers wear bikini as army uniform and their men participate in the ufc women's division

@Deino look at @azesus

 

[Deino]

Guys ... can we stay on topic please???

 

[LKJ86]

Just for fun:

 

[Deino]

Just for fun:
View attachment 473914

Best post of the month ... but you should tell that this is a ps-job only, otherwise some stupid reporters go crazy again.

 

[samsara]

Just for fun:
View attachment 473914

Yes, Just for Fun, akin to the incredible titbit brought here by the diligent, investigative Senior Akasa... What a pleasant Intermezzo indeed... If one is able to maintain his cool head

 

[帅的一匹]

Just for fun:
View attachment 473914

I think it's very uncool.

 

[cirr]

最轻陶瓷吸波材料现身 可为隐形飞机减负

科技日报北京5月14日电 （实习记者崔爽）对电磁有吸收能力的吸波材料在防止电磁污染、电磁反射等方面有重要作用。记者14日获悉，哈尔滨工业大学（威海）张涛教授研究团队近期发现一种轻质、耐高温吸波新材料，其密度仅为每立方厘米15毫克，是已知陶瓷材料中最轻的。该研究发表在《碳材料》期刊上。

据该成果的第一作者、哈尔滨工业大学（威海）材料科学与工程学院张涛教授介绍，这种新吸波材料可以大大为飞行器、船舰减负，“以美军U-2飞机为例，其吸波剂为羰基铁粉，占到涂层重量的50％以上。如果将此次发现的新材料用于隐身和屏蔽，其占涂层重量的比例将降至10％以下。”

这种材料是通过先驱体分子设计合成的六方BCN三元化合物陶瓷，独特的微纳结构和成分可设计性使其在不同电磁波段（S、K等波段）具有优异的吸波性能。其吸波频段具有可调节特性。除此之外，这种具有微纳孔结构的三元化合物材料具有超疏水特性，不需借助任何外形设计即可漂浮在水面上。

这种新型三元材料可以极好地满足现代吸波材料“薄、轻、宽、强”的要求，其发现对新一代耐高温、全天候、超轻吸波材料的发展和应用具有重要指导价值。未来，它将被用作高马赫数隐身飞行器的涂层材料、高压输变站和大功率服务器的涂层材料等，防止电磁污染和信号干扰。

http://digitalpaper.stdaily.com/http_www.kjrb.com/kjrb/html/2018-05/15/content_394483.htm?div=-1

 

[LKJ86]

 

[Path-Finder]

new materials used in helmet of China air force

What is being said in the video?

 

[LKJ86]

 

[cirr]

 

[nang2]

View attachment 474592

The dude on the right calls the dude on the left: rookie.

 

[LKJ86]