迄今最完整的J-20论文-----当然只能取得非官方数据！

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Chengdu J-XX [J-20] Stealth Fighter Prototype
A Preliminary Assessment

Technical Report APA-TR-2011-0101

by Dr Carlo Kopp, SMAIAA, SMIEEE, PEng,
Peter Goon, BE (Mech), FTE (USNTPS)
  3rd January, 2011
Updated 11th, 12th, 13th, 15th January, 2011

Introduction
Technical Observations on the Prototype Design
General Conclusions
Multi-Role Options and Production Numbers
Endnotes/References:
Prototype Imagery and Multimedia
Prototype First Flight 11th January, 2011
Prototype Taxi Trials December - January, 2011
Multimedia
Introduction


In late December, 2010, imagery of what is claimed to be China's new stealth fighter has emerged on a range of Chinese Internet sites.  

There have been no official Chinese disclosures as yet, so many of the claims about the aircraft appearing in the media may only be speculation presented as fact.

The aircraft may be a technology demonstrator or a prototype for a mass production fighter aircraft. The latter is however much more likely, given that the Deputy Chief of Air Staff PLA-AF Gen. He Weirong claimed an IOC between 2017 and 2019, in a November, 2009, public disclosurei.

The following is a preliminary assessment only and subject to revision. APA will produce a more complete assessment at a future date, once more technical material and the detailed analysis of same becomes available.
http://www.ausairpower.net/APA-J-XX-Prototype.html