(The model used was an extant public domain 3,343 facet representation constructed from publicly available high and medium resolution photographic imagery of the J-20 prototype, observed in December, 2010, and January, 2011. 现阶段公共领域使用的模型,是根据2010年12月和2011年一月份对歼20原型机的观察,从公开拍摄到的中高分辨率的摄影照片进行构造的,一共有3343个面。