超级军网澳大利亚库珀对J20 RCS 的估算（2011/7/4），大致等同F3 ...
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h t tp://w w w.ausairpower.net/APA-NOTAM-040711-1.html
The Chengdu J-20: Peace in Our Time?
Air Power Australia - Australia's Independent Defence Think Tank
Air Power Australia NOTAM
4th July, 2011
Contacts:
Peter Goon Carlo Kopp
Mob: 0419-806-476 Mob: 0437-478-224
关键点：
This study has explored the specular Radar Cross Section of the Chengdu J-20 prototype aircraft shaping design. （RCS 的估算）
Simulations using a Physical Optics simulation algorithm were performed for frequencies of 150 MHz, 600 MHz, 1.2 GHz, 3.0 GHz, 6.0 GHz, 8.0 GHz, 12.0 GHz, 16.0 GHz and 28 GHz without an absorbent coating, and for frequencies of 1.2 GHz, 3.0 GHz, 6.0 GHz, 8.0 GHz, 12.0 GHz, 16.0 GHz with an absorbent coating, covering all angular aspects of the airframe. （第一种估算没有考虑隐身涂料， 第二种算法考虑了隐身涂料）
In addition, the performance of a range of Chinese developed radar absorbers was modelled, based on a reasonable survey of unclassified Chinese research publications in the area . (隐身涂料的数据来自没有公开的材料）
None of the surveyed materials were found to be suitable for use as impedance matched specular radar absorbers.
Modelling has determined, that if the production J-20 retains the axisymmetric nozzles and smoothly area ruled sides, the aircraft could at best deliver robust Very Low Observable performance in the nose aspect angular sector.
Conversely, if the production J-20 introduces a rectangular faceted nozzle design, and refinements to fuselage side shaping, the design would present very good potential for robust Very Low Observable performance in the S-band and above, for the nose and tail aspect angular sectors, with good performance in the beam aspect angular sector.
This study has therefore established through Physical Optics simulation across nine radio-frequency bands, that no fundamental obstacles exist in the shaping design of the J-20 prototype precluding its development into a genuine Very Low Observable design.
总结：J20 的外型设计没有致命缺陷，完善后RCS完全可能达到 genuine Very Low Observable design （RCS超低的水准）
h t tp://w w w.ausairpower.net/APA-NOTAM-040711-1.html
The Chengdu J-20: Peace in Our Time?
Air Power Australia - Australia's Independent Defence Think Tank
Air Power Australia NOTAM
4th July, 2011
Contacts:
Peter Goon Carlo Kopp
Mob: 0419-806-476 Mob: 0437-478-224
关键点：
This study has explored the specular Radar Cross Section of the Chengdu J-20 prototype aircraft shaping design. （RCS 的估算）
Simulations using a Physical Optics simulation algorithm were performed for frequencies of 150 MHz, 600 MHz, 1.2 GHz, 3.0 GHz, 6.0 GHz, 8.0 GHz, 12.0 GHz, 16.0 GHz and 28 GHz without an absorbent coating, and for frequencies of 1.2 GHz, 3.0 GHz, 6.0 GHz, 8.0 GHz, 12.0 GHz, 16.0 GHz with an absorbent coating, covering all angular aspects of the airframe. （第一种估算没有考虑隐身涂料， 第二种算法考虑了隐身涂料）
In addition, the performance of a range of Chinese developed radar absorbers was modelled, based on a reasonable survey of unclassified Chinese research publications in the area . (隐身涂料的数据来自没有公开的材料）
None of the surveyed materials were found to be suitable for use as impedance matched specular radar absorbers.
Modelling has determined, that if the production J-20 retains the axisymmetric nozzles and smoothly area ruled sides, the aircraft could at best deliver robust Very Low Observable performance in the nose aspect angular sector.
Conversely, if the production J-20 introduces a rectangular faceted nozzle design, and refinements to fuselage side shaping, the design would present very good potential for robust Very Low Observable performance in the S-band and above, for the nose and tail aspect angular sectors, with good performance in the beam aspect angular sector.
This study has therefore established through Physical Optics simulation across nine radio-frequency bands, that no fundamental obstacles exist in the shaping design of the J-20 prototype precluding its development into a genuine Very Low Observable design.
总结：J20 的外型设计没有致命缺陷，完善后RCS完全可能达到 genuine Very Low Observable design （RCS超低的水准）
禁止方言，以上！！
禁止方言，以上！！
鄙视说鹰语的，楼下保持队形
小于F22
民族语言可以保留，也应该保留，但在公共场合就应该使用国语。
“澳大利亚库珀对J20 RCS 的估算（2011/7/4），大致等同F35，小于F22”——35滴RCS小于22？
地球村中国屯的地盘禁止说英国屯的话
目前的数据极其有限，估算等同F35小于F22 还是可以理解的
有这么牛吗？？
现在俄罗斯的兔粉也越来越多了。
英文不好，头有点晕
此外，在对中国相关领域各类公开的科研出版物的合理分析的基础上，本次仿真计算考虑了中国开发的各种不同类型的雷达吸波材料。
海客 发表于 2011-7-5 12:24 
“澳大利亚库珀对J20 RCS 的估算（2011/7/4），大致等同F35，小于F22”——35滴RCS小于22？
这有可能，35小点，DSI也更隐身点，用了新一代的隐身涂料（F22将来也会换）。以上为猜测
“澳大利亚库珀对J20 RCS 的估算（2011/7/4），大致等同F35，小于F22”——35滴RCS小于22？
这有可能，35小点，DSI也更隐身点，用了新一代的隐身涂料（F22将来也会换）。以上为猜测
这个只是估算。但是可以参考一下
我不懂库珀是什么。我只是想说，一个不会造四代隐飞的国家，居然能轻易分析出别的国家隐飞的性能。。
澳大利亚好强大，不是吗？
澳大利亚好强大，不是吗？
为了让纳税人知道我们的钱不是白扔出去的 我们一定要在舆论上打倒J20
到底F35和F22 的哪个更大些？
这个要问PUPU那家伙，上次透露航空人终于在航天人面前扬眉吐气了一把什么的，，，在航天北京某所“微波暗室”测神马来着？？？抓住PU胖要问个明白。。。
这个要问PUPU那家伙，上次透露航空人终于在航天人面前扬眉吐气了一把什么的，，，在航天北京某所“微波暗室”测神马来着？？？抓住PU胖要问个明白。。。
35小于22？？我震惊了
对现阶段一切猜测都表示怀疑没有正式列装之前，所有的估算和猜想都只能臆断。。。。。洗洗睡吧。
在数据没有公开之前，一切都是YY。即使J10装备了那么久，它的数据，我还是不信的。没办法，TG保密工作做得太好。