Eurofighter Typhoon (UK versions) - Technical data and discussion (Part 2)

  1. The video shows an IR target flare, which has completely different properties to an IR decoy flare.
  2. Flare rejection on the AIM-9M works by comparing the IR signature of the flare to the IR signature of the original target. In this video the original target is the flare and there is no second IR source to compare to. Ergo no mechanism to trigger flare rejection (and that’s ignoring the whole target flare =/= decoy flare issue).
  3. A report from trials of the AIM-9M literally says the IRCCM works before launch.

Flare rate bias only kicks in after seeker shutoff occurs, so the fact that flare rate bias was observed means that the seeker shut off. Also the fact that targets were re-acquired after flying in front of the sun would suggest that the sun was detected as a flare and seeker shut off occurred.

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Ah I see, fair enough. Thank you

Talking of Aim-9M firings reminds me of this passage:

Harrier: How to be a fighter pilot


Screenshot 2025-11-09 233802

We also have reports from that Sea Drone that smoked those 2 Sukhois using Aim9M…

The operator stated surpising to no one that the Aim9M was more effective than the R-73 used previously.

Which is probably a combination of low smoke motor, IRCCM and lock on range.

All three of which are either not implemented, bugged or just stonewalled by devs! Yippeee!

No wonder my AIM-9Ms recently have been so easily warded off. Guess I’ll go back to Japan where at least their missiles work more often than not.

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So… Does anyone want to file a bug report about the AIM-9M / L/I(-1) seeker, IRCCM and guidance bugs?

If I get a clean example, Im going to report front aspect IRCCM not working, but that and I suspect all the other issues would probably require primary docs to be accepted.

Wdym?

I wouldn’t say that the guidance lock-up bug (causing the missile to turn into nowhere after it is fired and has to maneuver hard) would need primary documents.

The seeker shut-off duration on the other hand would most likely need one.

The lock drifting into nowhere because of an over-ambitious IOG (lock-on with directly following seeker shut-off without valid data for IOG) causing the lock to drift into nirvana really fast (before launching the missile) is difficult to prove wrong…

Expected behaviour.

Target coming straight at you, you fire an Aim-9M, the target flares, the seeker shutoffs but otherwise the missile keeps flying towards where it thinks the target should.

Observed behaviour

Target coming straight at you, you fire an Aim-9M, the target flares, the Aim-9M re-targets the flare and goes for it instead, no sign of the IRCCM ever triggering.

Yeah, that one would be reportable without sources.

Yeah, not it

Do we have or are there any sources stating the duration of the seeker shut-off? The current duration of up to 2 seconds seems way too long.

That’s a Flame or Gunjob question

Welp, there goes nothing: @Flame2512 @Gunjob
Do we/you have anything on the “seeker shut-off” duration for the AIM-9M / AIM-9L/I(-1) seeker?

Btw. I’ll try to write up a report about the bugged guidance of these missiles, but I don’t know if the AIM-9L is affected too. (They really miss a “weapons” category for that matter as I have no idea if I should put it under “aircraft” or “game mechanics”).

Id put it under aircraft as its an aircraft weapon

Isn’t the AIM-9M on the AH-1Z affected too? That’s why I’m pondering “game mechanics” ^^

I think that is just overthinking it a bit

So “aircraft” it is ^^

For the AIM-9M it does not have a fixed duration shutoff lasts until the flare leaves the FoV.

It’s an aircraft weapon so personally I’d put it under aircraft.

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Then there’s something wrong with the implementation as the seeker shut-off triggers at extremly short distances (<1 km) too but isn’t immediately disengaged the moment the flare shoots outside of the FoV (BOL here being an exception as these should keep longer in the FoV of the missile as they’re ejected behind and not shot out up or down).

Edit: Created a report for the bugged guidance: Community Bug Reporting System

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