I think AirForceBrat wanted a picture of the canards deflecting asymmetrically in air.
J-20 5th Gen Fighter Thread VI
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I think AirForceBrat wanted a picture of the canards deflecting asymmetrically in air.
Yes Sir, but I did not state that, and this picture does show that each canard has its own hydraulic power actuator, just as each of the control surfaces on the main wing display in those faired in housings.
Siege, do you remember those early videos?? where as the pilot was in the cockpit, and he began the engine start, the ground crew would be standing by, and the airplane would almost "quiver" as each of those flight control surfaces were powered up?? and each surface would move through their full throws, I believe the canards would neutralize and sync up as the power was brought up??
I will try to have a look at our first J-20 thread so I can reference interested posters back to those very interesting videos...
I know you are busy, but could someone "sticky" those early videos, they are still very interesting and quite relevant to current J-20 activity, and you can learn so much from watching those early video's, I myself will be looking for that video showing the "aileron roll" as the bird returns from an early test flight..
I found a video of J-10 at pre-flight check. The canard moved independently. Check the video at 50s.
I know this is not J-20, but since the FCS designer is the same, it is certainly possible J-20 has same capability. The only question is whether J-20 choose to do it or not, only a software lock/unlock thing.
I know this is not J-20, but since the FCS designer is the same, it is certainly possible J-20 has same capability. The only question is whether J-20 choose to do it or not, only a software lock/unlock thing.
Hyperwarp
Captain
via LKJ86 ...
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This is absolutely mandatory for the PLAAF. No PLAAF fighter, no matter how advanced is ever truely in-service until there is photoshoot of it firing unguided rockets. So, the J-20 also MUST go through this rite of passage. Otherwise all that 5th gen blah, blah don't mean $h!t!!!
John Oliver challenges you!
that is likely the FCS "booting up", just prior to that, the canards are "synced up", and doing that "flicking" thing,,, also notice only the starboard canard does that little "flicking", the port canard remains "neutral" and does NOT exhibit the customary equal and opposite reaction we see when the elavons are deflected one up, one down..
it appears that is a system check and recheck, perhaps the starboard canard was out of calibration,, as I noted, each canard is independently driven by its own hydraulic actuator, there would never be an inflight situation where the two canards would operate independently of one another... if that were to be the case, when the pilot did the pre-flight controls free and correct, the right and left canard would move in opposite directions in sync with the elavon on the starboard or port side, and they do not on the J-20..
I have to confess that I don't know about the J-10 and its FCS, as I'm not particularly interested in aft mounted delta fighter aircraft, the Typhoon and J-20 being the two exceptions.
and concluded that canard is not the ideal control surface for roll:
I agree with Air Force Brat. This is more likely a flight control system calibration.
exactly, the canard would be a very inefficient means to roll the aircraft, given its extremely short moment arm... most often ailerons or elevons are located as far outboard on the wing as practical, in applications where roll authority androll rate is king, such as a fighter aircraft.
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