Shenyang next gen combat aircraft (?J-XDS)

O

ougoah

Brigadier
Registered Member
siegecrossbow said:
Flight control for tailless is a pain. No surprise there really.
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The J-36 appears to take a completely different design approach to achieve a supersonic tailless aircraft.

I conjecture that the J-XDS moving wingtips perform more "actively" during these slow speed landing approaches much like how even a civilian aircraft's control surfaces become more active with adjustment inputs during landing phase. Cruise phase, they rarely need to move.

I think as speed picks up and the J-XDS is in its typical operational speed during combat, the wingtips move much less. Particularly during cruise phase. It would be interesting to see J-XDS in combat maneuvering. We have a footage of the J-XDS doing a slight pull at an angle for about 10 seconds and barely see any wingtip deflection (although it is a bit hard to see).
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It looks like on landing approach as the mach goes from 0.7 to landing speed, that speed range forces the wingtips to adjust with far more input action.
 
E

enroger

Senior Member
Registered Member
ougoah said:
The J-36 appears to take a completely different design approach to achieve a supersonic tailless aircraft.

I conjecture that the J-XDS moving wingtips perform more "actively" during these slow speed landing approaches much like how even a civilian aircraft's control surfaces become more active with adjustment inputs during landing phase. Cruise phase, they rarely need to move.

I think as speed picks up and the J-XDS is in its typical operational speed during combat, the wingtips move much less. Particularly during cruise phase. It would be interesting to see J-XDS in combat maneuvering. We have a footage of the J-XDS doing a slight pull at an angle for about 10 seconds and barely see any wingtip deflection (although it is a bit hard to see).
Please, Log in or Register to view URLs content!


It looks like on landing approach as the mach goes from 0.7 to landing speed, that speed range forces the wingtips to adjust with far more input action.
Click to expand...

If the AMP really mainly produce drag by stall induction, then it could be that flow separation is much more unpredictable at low speed, requiring AMP to deflect more to produce drag. As a result the yaw-roll-pitch coupling with AMP could be causing a lot of instability.

There was a footage showing J-50 at relatively high speed and it looks much more stable.

Edit: Maybe at low speed AMP works more like split aileron by having AMP and aileron defecting in opposite direction to produce drag
 
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