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ATP 3-52.4 MCRP 3-20F.10 NTTP 6-02.9 AFTTP 3-2.8 Multi-service Tactics, Techniques, and Procedures for Air Control Communication February 2020 COMBAT AIRCRAFT FUNDAMENTALS F-117 (U) USN ALL WEATHER INTERCEPT (AWI), FLIGHT TRAINING INSTRUCTION CNATRA PAT PUBS (Including latest USN BFM and AWI...

Yes. The curve is in a -90 to 90 deg AOA range, with every AOA tick 20deg apart.

Actually it's the slope/gradient of the pitching moment (Cm) curve that defines static longitudinal stability. A RSS aircraft can exhibit both stable and unstable characteristics in different regions of AOA. Take the Cm curve of Jas-39 for example (taken from...

There's no nerf. (https://forums.eagle.ru/showthread.php?t=258959)

My bet is that similar to how a F-16 utilises differential horizontal stabilisers to help with roll maneuver, the J-20 uses differential vertical stabilisers to increase roll control efficiency while at the same time uses it as an ARI (Aileron-Rudder Interconnect) to minimize side-slip. Here...

Air Force Tactics, Techniques & Procedures 3-3 Vol.5, F-16 Basic Employment Manual: http://falcon.blu3wolf.com/Docs/Basic-Employment-Manual-F-16C-RoKAF.pdf (A very comprehensive read, including both WVR, BVR intercept and Air-to-Ground Tactics)

If you don't know anything about J16, just remember it's a two-seater by observing the length of canopy in the picture.

Did a simple measurement on J20 nose to nozzle length based on J16 wing span using software.

Last time I was in a dinner with guys including Yankee（养鸡） talking about turning performance of J-20, I got the information that the sustained turn performance at subsonic speeds is pretty comparable to that of a F-16. On what altitude/detailed speed settings he did not say. But to me it totally...

Speaking of the weather, if I recall right, that day is hazy but the sun is shining high. The overall brightness is good. Even if the weather is as cloudy as the image below, it still doesn't show a hot long flame. And for an aircraft like Su33, performing a carrier take off using a ski-jump...

I'm not asking whether the aircraft should turn its AB on or not. I'm just pointing out that Max AB does not necessarily comes with a visible red hot flame, using J15 as an example. I live in Hong Kong and have been to the 2016 Zhuhai airshow myself. The day when J-20s perform their demo is not...

As you requested: Those two images are shot within 1 sec interval at takeoff on the runway. And I have a perfect angled J20 video: Notice when the flame came out and the nozzle opens. The nozzle control system looks pretty similar to Su27: At last, I don't think that F-16 nozzle has...

The nozzle definitely cannot obscure the core from that angle my friend. There's just no glow-ring. Period.

So by your logic, you mean this F-16 during landing has its engine turned off just because there is no glow-ring? And what about this? The engine is turned on again during flight?

Yes, definitely J-20 at Zhuhai demo, with blue flames visible on both planes. Also the bright and heated flame holder ring with flame coming out is clearly visible from J-20 on the right: All afterburner engine have flame holder equipped physically, even they are turned off. It become bright...

Min AB can be judged by a clearly visible bright flame holder ring. This means AB is just ignited but not come into a full burn. MIL does not have the fuel ignited hence you should not see any flame coming out of the flame holder ring. That's pure afterburner engine science.

Another option is to look at the nozzle position to judge if it's in afterburner or not in case you cannot see the flame. Most aircraft will have the nozzle almost fully open at Max AB, and slightly or half open at MIL. For example in F-16C Block50 (F110-GE129), the nozzle position do not...