J-20 5th Gen Fighter Thread VIII

[latenlazy]

How big is the radar/EW upgrade between j-20 vs j-20A?

J-20 got a radar upgrade even between the AL-31 and WS-10 versions I think.

 

[Alfa_Particle]

J-20 got a radar upgrade even between the AL-31 and WS-10 versions I think.

Between the WS-10C versions too, even.

 

[Deino]

Between the WS-10C versions too, even.

Between which WS-10C versions? ... aren't these all the same?

 

[Alfa_Particle]

Between which WS-10C versions? ... aren't these all the same?

No, I meant as in avionics refreshes across batches that still uses WS-10C.

 

[taxiya]

Lets think what Stealth is. Its basically following the principle of a mirror. You reflect rays away from the sender by having angles that are never perpendicular. Consider taking Torch light in dark room and try to figure out a shape. That's kinda what Radar is doing.

You can basically eyeball stealth. Any planes with protruding shapes, multiple control surfaces will have higher RCS. J-20 loses stealth by having vertical stabilizers both on top and bottom. There are also overall shape alignment that seems a bit less compared to F-35. So, I think it can be reasonably guessed that J-20 has higher RCS.

No, one can never eyeballing radar stealth. When you talk about principle of mirror you are talking about visible light. Radar stealth is far different from it because the radar waves are far longer in wave lengthes than visible light, so long that they are comparable to panels of aircraft fuselage. When such waves reach these panels and edges they DON't reflect like light on a mirror, they emits as a lamp to all directions. All those models are too low in accuracy, so they can not be used to simulate anything.

 

[taxiya]

delete, missunderstanding.