AIM9 Symbolics & SOI concept
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Dears,
not sure that this topic fits in this thread and also not that I really understood the documentation; still, let me ask this naive question.
I understand that a FCR lock outside the HUD with AIM9 loaded now shows an arrow symbology in the HUD, being replaced by a double-arrow once UNCAGE has been performed.
What I did not expect that this is ignoring the target must not be the same. You can have one target locked by FCR and another one with the EO. Yet, the double-arrow always follows the FCR target.
Is that how it should be? I am asking also because the documentation speaks about a correlated AIM9 which is not the case in my understanding as it is not anymore for obvious reasons. In any case, take this as hint to be extra catious with your SOI.
thanks for your confirmation/ input/ …
stingray
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It has to do with which sensor you have assigned to the weapon. You can only have one SOI so if you have radar as SOI and a target, then the radar will be in priority.
I’ll bet that if you were to switch your SOI to TGP in this case, then the weapon/arrows would follow. Give that a try and see what happens.
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@Stingray Seems right to me (but I’m far from any sort of authoriity on the subject).
Sidewinder seeker diamond will zoom off in random direction, or toward sun etc, when uncaged.
If you re-cage it should snap back to the radar TD box (in SLAV submode) or to straight ahead (in BORE submode).
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That is ok, I am fully with you and here I uncaged a different target than the FCR totally on purpose. It is not about the diamond following the TD box but rather that the double arrow points towards the TD box. You could mistakenly take this as an UNCAGE on the TD boxed target.
@Stevie
Thank you. The behaviour is as you told. Switching to TGP it follows this one (which is also what I would expect). If I uncage on a different target than what is FCR-tracked and I shoot the missile, it will go to the EO locked target! That means I have in that moment no correlation anymore between FCR and AIM9 EO sensor (which is also not new and established since many versions). I am only asking about the behaviour of the double arrow (indicating per se that UNCAGE has been performed): shall it follow the FCR target even if the weapon SOI is a different one? -
@Stingray - so, the oddity in your scenario is having two separate targets on two different sensors. With a weapon under the hammer the weapon is going focus on your SOI. In this case you have two to choose from, and hence the confusion.
If you only select one target on one sensor (TGP or radar) the other sensor should Slave to that target and the two sight lines will coincide. At that point, you can lock both on the same target, though in an SRM engagement I doubt you’d have time to do that effectively. If you have multiple A/A bogies radar TWS is your best option, and then sort priority from there.
Radar is the primary SOI for A/A weapons (particularly SRM) because it’s field of regard will be your HUD (or off your nose, more generally) - which is where your eyes will be in this case. The TGP isn’t really a good A/A sensor, except for maybe at longer ranges for use in helping ID a bogey, and even still you’d want to lock the radar and Slave the TGP because that’s faster than trying to do a straight lock with the TGP on it’s own.
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@Stingray - oh…and it sounds like the double arrow is indicating where the missile is actually going to go, based on the selected SOI? Which may not be obvious based just on what you are looking at on the MFD…once the Winder is Uncaged and locked it stops being cued by the sensor, which is why an AIM-9 is “fire and forget” and you can shoot on Tone only if you choose.
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@Stevie
somewhat. Looking at the Sidewinder, more so the 9X, I am rather using it in conjunction with the HMCS rather than the FCR. Also, if, then ACM modes are used and not CRM modes. The TGP has almost null or very little use in such a scenario (I was just mentioning the TGP because you were suggesting a “bet” to tes the arrow behaviour.)In that given scenario, I might unslave the 9X (with CRSR ENABLE) and direct it with the HMCS to one target (that is without radar lock) + uncage it there. If I then acquire another target with FCR (e.g. with the HMCS), the EO Sensor of the 9X will remain on the original one!
It is a very hypothetical scenario but still. In that scenario, the arrows would point to the FCR locked target and might confuse (because that specific target is not uncaged for!). In the -34 documentation it also says “correlated AIM9” which is also (in my opinion) not correct because it is not slaved to any other SOI any more…
I just may take it as given for now and will see whether any update shall bring some news.
stingray
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@Stingray - so…to begin with, I think “correlated” means something different in my world, and I’d associate that term more with something that will actually ID the bogey for you - forex, if you have a SAM site registering on your RWR and your AGM-88 bites off on that site, I would consider that “correlated”. Dunno what BMS means by “correlated” in this case, but it doesn’t sound like correct usage to me either. And certainly not for an AIM9 of any sort.
OTOH, what you are doing with the JHMCS is exactly what you should be doing…but if you are trying to employ more than one sensor on two different targets, you are still confusing the jet (or more likely yourself) in terms of where the SOI is.
But there should be a priority scheme in place that regards both which weapon is under the hammer, and which sensor is being employed. The Helmet is also eligible as an SOI, and I expect that an Uncage both puts the Helmet in priority and Uncages/Slaves the AIM9…given that Uncage does nothing for any other A/A weapon, or the radar.
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@Stevie thanks.
Yes, I agree. I might wrongly interpret “correlate” here, but still… in any case, I can follow and agree your statement about SOI!stingray
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on the previous screenshot, we can see “16” below the TDbox on HMCS, and I guess it is the same information we can see on HUD close the double NArrow pointed to target…what does it mean “16” value ? I didn"t find any information on this topic.
F9 is here the FCR TLA but what is 16? FCR TGT angle?
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Topic is now a regular thread
MaxWaldorf
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@suhkoi69 16 is Altitude
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@suhkoi69 said in AIM9 Symbolics & SOI concept:
on the previous screenshot, we can see “16” below the TDbox on HMCS, and I guess it is the same information we can see on HUD close the double NArrow pointed to target…what does it mean “16” value ? I didn"t find any information on this topic.
F9 is here the FCR TLA but what is 16? FCR TGT angle?
Symbology will be clarified in the U3 Dash-34 .
