J-20 in flight
IMO looks more like a CG ! ... look how "wide" or at least clearly visible the panel lines are ...
J-20 in flight
View attachment 23291 J-20 in flight
yup, plastic model someone took picture ofJ-20 in flight
Three very nice close-ups ...
Actually they probably test in both. the main reason for the mount is that the Testing chamber can only simulate conditions in a landed condition. Jet fighters are built to fly as such testing on a pedestal allow simulation of near flight conditions with the aircraft sleek. and in the air at grater ranges.A static test airframe (or better yet, an actual real aircraft with working subsystems and everything else) would be more suited for anechoic chamber RCS and EM testing, which is one step up from pole mounted RCS testing, and more importantly they can put the entire full scale article inside without having to make it light enough to fit on the top of a pole.