Vympel R-73 'ARCHER' - History, Design, Performance & Discussion

I hope any day gajin fix R-73 flare resistant better AIM-9L 5% or 8%

So, it’s hard to tell but it looks like that guy is flying straight with AB. Doesn’t maneuver and doesn’t flare. Yeah, the 73 turns like crazy but if he had turned off AB, flared and turned it would have likely missed…

that is maximum somebody can do sir after preflaring

It’s a difference of 3 buttons or flying straight. There are a lot more ways they can do things but what I mean is they can literally drop a flare(Not even a lot), pull off AB, and turn off. No crazy turns, just a sharp turn and boom, done.

like what? others are dodging

You COMPLETELY missed the point of that video, and why the R-73 is concerning in the first place…

Besides the fact that its the second most flare resistant plane launched IR missile in the game rn (narrowly beaten by the R-27R, but it crushes every other IR missile with a tiny 1.5° post launch FOV, with the next closest being 2.5°), the missile is maneuvrable enough to be fired at you in situations where with any other vehicle, youd think you were safe.

It makes proper threat identification and classification MUCH more difficult when the plane doesnt have to be pointing its nose at you, and can even be flying in the complete opposite direction when shooting at you.

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I didn’t know the R-27R was resistant to flares. Tbqh I didn’t even know it could sense / see flares so I’d like to learn more about this. ;)

Yes, the R-73 drastically reduces its’ range when maneuvering high-angle off-bore though. If you’re >2km from him and he’s more than 50 degrees or so nose pointed away from you… you’re more or less safe. Even if he does launch a single flare is usually more than sufficient to stop it currently.

Of course that will change. The R-73 has several open reports right now and is SIGNIFICANTLY underperforming.

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Does the missile “run out” of thrust vectoring when the motor stops burning?

Yes

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Also the proximity fuse has the same range (3m) as r-60 missiles despite the noticeably increased explosive mass. I assume this is a placeholder value and if increased it could make a major difference in certain scenarios

Perhaps, I am collecting more sources currently. Hope to update thread in a few weeks with a lot of information but my attention is on AIM-120 / R-77 right now.

So is this meant to be possible? Surely the seeker should have lost lock once the missile was pointed completely the opposite direction to the aircraft?

https://www.reddit.com/r/Warthunder/comments/16346at/so_the_r73_is_apparently_able_to_do_this/

Did he just get lucky because the missile carried on turning after it lost lock and re-acquired the target?

Unsure, certainly not as intended.

the thing is I dont think the missile every actually lost sight of the target in the actual server just the visual model from client side makes it look like it does but assuming the missile is constantly pulling say, 25-40 degrees AoA+75 degree gimbal limit would make it near impossible for the missile to lose sight of the target provided it is turning. Thats my hypothesis atleast

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it is a universal bug

prolongationTimeMax indicates the angular rate memory for the missile that will persist after losing track.
For example, if target is moving at 10 degrees per second to missile’s right, after losing track of target, missile’s seeker will keep on moving to the right at 10 degrees per second and attempt to reacquire.
This is why after missile going through flares it may randomly acquire a friendly aircraft, since the movement of seeker FoV when prolongationTimeMax is in effect is not bounded by angleMax or rateMax.
Here is a Chinese video with detailed test of this mechanics (and infrared intensity as well as band mask to reject).

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this value seems to be the same on all AAMs so for the R-73 it shouldnt be any different from others there

The problem is when prolongationTimeMax is in effect, FoV is not bounded by angleMax and rateMax.
That means the missile’s seeker essentially spinning on an axis several times per second, If missile flew past you at close distance, the angular rate at that instant could be 360 degrees per second or higher. Thus the missile will acquire any target that happens to be within its FoV, effectively retaining or reacquiring a lock from an impossible state.
This is also the reason (the bug) of why missile randomly regains lock or lock on unfortunate friendly target after going through flare.

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ah I see what you mean now, also that video sent seems really interesting but unfortunately I do not know chinese but the visuals showed what you meant

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Possible it’s arcade battle’s