Chengdu next gen combat aircraft (?J-36) thread

BoraTas

BoraTas

Major
Registered Member
lcloo said:
On Take off you need more speed to achieve lift, open split rudder will induce drag and slow down the aircraft. So no, you don't open the rudder on take off.

Another function of split rudder which we may have already observed in J36's test flight is yaw control. Below is what AI replied to me, using B-2 bomber as example:-
The B-2 bomber, being a flying wing design, lacks a traditional tail and rudder. Instead, it uses a unique system to achieve yaw control (side-to-side movement). The wingtip split rudders, also known as differential air brakes, play a crucial role here. These split rudders can open up on one side of the wing, creating drag and causing the aircraft to yaw in the desired direction. This innovative design helps maintain the stealth profile of the B-2 while ensuring precise maneuverability.
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It might not be this simple. I wonder about the subsonic stability of the J-36. If it is very unstable then those opened split rudders might be a safety measure during the take-offs and landings. I wonder how they change the center of lift (CoL) and spanwise pressure distribution while they are open, especially since they have dog-tooth design to generate vortices.
 
R

Ringsword

Junior Member
Registered Member
Xiongmao said:
Are we sure it has 3 engines yet? Where was this confirmed for definite?
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What I really want is for the J36 to later "stand on its tail" like the old F15 Eagle launching an ASAT weapon of some years ago but go into the stratosphere (where it will dwell/fight-EW/VLR -AAM'S)so quickly it will astound PLAAF enthusiasts and make the USAF crap their pants-third super engine -yes.
 
Blitzo

Blitzo

Lieutenant General
Staff member
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talonn said:
Is the middle engine confirmed not ram jet? Or still up to speculation at this point?
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There are no credible indicators or rumours that the central engine is any different to the side engines.

Putting it another way, there is no reason to think that the three engines are not all the same.

"Confirm" here being the operative word, because standards for "confirmation" may differ... and without literally having CAC tell us, we can't really confirm a negative in the way you phrased it. Instead, the onus of evidence should be to challenge the null hypothesis (null hypothesis being -- all three engines are the same)
 
CaribouTruth

CaribouTruth

Junior Member
Registered Member
AndrewJ said:
No surface movement when doing so many fast maneuvers. How is that possible !? :eek:

Should admit, so far we know too few about 6th gen fighter control tech.
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The video is taken from a distance, so the amount of deflection is not absolutely clear, the control surfaces are far apart and there are plenty of them. Doesn't take a large deflection if there is good mechanical advantage and is done at appropriate speed.
 
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