J-20 5th Gen Fighter Thread VI
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Thanks a million! Been looking for a photo like that for a long time - I was beginning to wonder whether the EO sensors were perhaps not ready yet.
Happy New Year Bai Long, from fans and friends here on SDF!
Yes, and it seems a little odd, (not being critical here guys) that the lenses are buried in an open pit on each side? I would wonder about airflow, but they have this figured out, it would seem to be in a high pressure area, but the nose cone has already "bored a hole" in the ambient air, probably a laminar flow set up along the surfaces of the radar faired nose cone.
This would protect those lenses from moisture or ice which would significantly obscure you vision, so that may well be the logic or just the proximity to the main EOTAS under the nose... neat picture
Be sure to note the heavy layers of radar absorbing Meta Material along all the leading and trailing edges.
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Yes, an amazingly high definition photo that shows a great deal about the construction of the J-20, notice the very large composite section under the cockpit, minimizing the need for attachment hardware.... those apertures that house the side mounted lenses are fastened through the skin, the fasteners drawing the lens enclosures up to the back side of the skin...... interesting.
And this bird, like all aircraft with more than a few hours, appears to have a large, flush mount screw missing, immediately in front of the lens housing apertures, straight ahead of middle point created by the two angles on the front meeting
There's a LO coated window over them, so they aren't open to the airflow. The idea is to avoid an external fairing (which is generally the solution on non-stealthy aircraft) that breaks the outer mold line if at all possible. However, to ensure adequate field of view, the window needs to be considerably larger than the sensor, especially in directions where parts of the surrounding structure are blocking the intended line of sight. For these sensors on either side of the nose, the boat-like v-shaped cross section below the chine means the aperture has to extend far above the sensor location to provide for a decent upward field of view.
I was expecting the sensor(s, as it turned out*) to be sitting near the bottom of the window, but although I'd looked at countless photos previously, it seems none were both of high enough resolution *and* the right angle.
* Probably MAWS and LWR, alternatively UV and IR band MAWS for reduced false alarm rate.
Did it take him less than two years to learn how to fly J-20? Back in mid. 2017, he only knew how to fly J-16 and J-10C
That led me to suspect that a lot of controls and interfaces on J-16C/J-20/J-10C are very similar.
Hendrik_2000
Lieutenant General
What are these lens for 360 degree view ? via LKJ 86
What are these lens for 360 degree view ? via LKJ 86
Holy cow that photo has been reposted a few times on weibo lol
Anyway that is an old version I made a few years ago.
Here is a newer one
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