J-20 5th Gen Fighter Thread VIII

sr338

New Member
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I have a question regarding the J-20's EOTS. Why is it only forward pointing while the F-35's EOTS is 360deg?
If you see the pics, the rear half of the J-20s EOTS is obscured.
 

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Gloire_bb

Captain
Registered Member
I have a question regarding the J-20's EOTS. Why is it only forward pointing while the F-35's EOTS is 360deg?
If you see the pics, the rear half of the J-20s EOTS is obscured.
It's understood - not known! - to be an a2a-optimized far- infrared(or dual band?) long-range a2a search set. IIRC we don't know if it includes laser or other heads; if the proposed F-22 IRST is an indicator - it may not. The lack of need to rotate 360 allows for the largest possible main mirror (simple geometry).

F-35 EOTS is a multirole, but really ground attack-optimized hardware, combining med- infrared sensor with a video feed and LRF/designator. IIRC you can treat it basically as an internal variant of SNIPER ATP (ATP-SE?).
It needs to be able to look back, because this is how free-fall laser-guided bombs are used (or even propelled a2g munitions, if the aircraft turns away after drop).
 
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siegecrossbow

General
Staff member
Super Moderator
I have a question regarding the J-20's EOTS. Why is it only forward pointing while the F-35's EOTS is 360deg?
If you see the pics, the rear half of the J-20s EOTS is obscured.

The J-20 is more aerial combat oriented than a generalist like the F-35 so the current approach is sufficient for the time being. China is working on a full blown solution similar to what is used on the F-35, however. There was a paper on this in 2022. Wouldn’t be surprised if we see a fully transparent EOTS on production level WS-15 J-20.
 

tankphobia

Senior Member
Registered Member
The J-20 is more aerial combat oriented than a generalist like the F-35 so the current approach is sufficient for the time being. China is working on a full blown solution similar to what is used on the F-35, however. There was a paper on this in 2022. Wouldn’t be surprised if we see a fully transparent EOTS on production level WS-15 J-20.
Would it also make more sense on the twin seater version? With a fire control officer the extra ISR capability would be put to full use in a more generalist J-20.
 
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