[WAD + TWEAK] Strange Missile Behavior

Post bug reports and ask for game support here.

Moderator: MOD_Command

Post Reply
FifthDomain
Posts: 486
Joined: Wed Aug 05, 2020 7:39 pm
Location: United Kingdom

[WAD + TWEAK] Strange Missile Behavior

Post by FifthDomain »

Good Afternoon

Build: Steam Beta 1328.6, DB3000 v501

Initially i set this up to test the HAWC AShM as i was unconvinced by its 1DP, anyway turns that it works just fine usually sinks a ship with one hit. What i did notice though is the defending ship fire most of its missiles backwards away from the incoming missiles (see below picture). I'm not sure if this is the correct behaviour or not but it seems strange. I have set up some saves so you can just play and watch it happen, just set it going and watch from the RED side. Save AShM v8, is an attack on one ship using HAWC. Version AShM v11, is the same scenario but using LRASM instead of HAWC, they don't seem to do it against the LRASM, which is why i'm not sure if it is actual problem. The final save AShM v8d, is the same scenario using HAWC against multiple targets to amplify the issue. Logs are also included.

Shooting Backwards.png
Shooting Backwards.png (2.42 MiB) Viewed 862 times

Any further info required just ask.
CMO Test File 37.zip
(1.94 MiB) Downloaded 8 times
Thanks for your time.
User avatar
blu3s
Posts: 1100
Joined: Fri Jul 08, 2022 9:45 am

Re: Strange Missile Behavior

Post by blu3s »

Logged 0015204
FifthDomain
Posts: 486
Joined: Wed Aug 05, 2020 7:39 pm
Location: United Kingdom

Re: Strange Missile Behavior

Post by FifthDomain »

Good Evening

Steam Beta 1328.7

Problem still exists,
FifthDomain
Posts: 486
Joined: Wed Aug 05, 2020 7:39 pm
Location: United Kingdom

Re: Strange Missile Behavior

Post by FifthDomain »

Good Evening

Problem still exists 1328.9

Thanks for your time
Dimitris
Posts: 15336
Joined: Sun Jul 31, 2005 10:29 am
Contact:

Re: Strange Missile Behavior

Post by Dimitris »

Checked this now with the current update release, and confirmed.

I _think_ what is happening is that the SAMs are just unable to rise fast enough to make an intercept "ahead " of the ship, and the soonest interception point is calculated after the ship, so the SAMs are directed towards that point.
(The incoming HAWCs are flying high, fast and level, and this is what the calculation of the intercept point is based on; there is not yet an indication that they are diving towards this ship.)

After a few seconds, the HAWCs do begin to dive towards the ship, and this completely throws the original intercept calculation of the window, with the SAMs being wasted.

It's hard to say if this genuinely a "bug" or an accurate reflection of the challenges that such weapons (incl. Zircon) place on "traditional" SAMs....
Dimitris
Posts: 15336
Joined: Sun Jul 31, 2005 10:29 am
Contact:

Re: Strange Missile Behavior

Post by Dimitris »

Did some more digging on this, with an eye towards removing all the "obstacles" that doom the ship in this scenario.

1) Insufficient early detection: By the time the ship detects the incomings, the earliest possible intercept point is "behind" the ship; this causes the backwards-firing SAMs behavior. Solved by placing an E-2D along the threat axis, far out.
(This BTW is why counter-hypersonics advocates talk about placing huge early warning & tracking satellite constellations in orbit. If you don't detect & track early, nothing else down the line will work.)

2) Even with early detection, the ship was not auto-targeting and beginning shot-evaluation far outside its nominal AAW range, so again the earliest intercept point was delayed. Solved by a code change (included on the next update); the "outer range limit" for auto-targeting and shot-evaluation against aero targets now dynamically expands with target mach value.

3) The ship would still not shoot early enough. Why? Insufficient range on sensors and weapons: The ship needed to obtain a track on the targets on its own in order to fire (no CEC!), and by the time it did the earliest intercept point was again behind the ship.

To confirm that #3 was indeed a showstopper, I placed a Burke Flight III DDG alongside the Russian frigate, armed with some SM-6 Blk IAs. Soon after the HAWCs were detected, the Burke immediately started firing SM-6s against them; the first volley was CEC-guided by the E-2D, while for the second salvo the leakers were close enough that it was able to track them with its own radars. All of them were killed.

I think this conclusively resolves this issue. Hypersonic threats apparently signal the end of AAW ships (and likewise, land-based SAM/ABMs) as "isolated islands". You can no longer rely solely on your own sensors and weapons for the job; the response window is too shrinked. You either fight as part of a network, with offboard early tracking and preferably with remote-guided interceptors, or you suffer.
FifthDomain
Posts: 486
Joined: Wed Aug 05, 2020 7:39 pm
Location: United Kingdom

Re: [WAD + TWEAK] Strange Missile Behavior

Post by FifthDomain »

Excellent Dimitris, thanks for the explanation that all makes sense to me.
thewood1
Posts: 10104
Joined: Sun Nov 27, 2005 6:24 pm
Location: Boston

Re: [WAD + TWEAK] Strange Missile Behavior

Post by thewood1 »

Can I make a suggestion for D...

The above explanation and the detail from the S-300 issues thread are great detail for long-time and newer players. It would be great if the FAQ was updated with this info. There are several other threads out there that would save time if the warsim FAQs were update, and then posted as a pinned thread in the main forum. I would also add them to the new manual. If something will be done with it, I'll go through and start assembling those nuggets for a FAQ 2.0.
Dimitris
Posts: 15336
Joined: Sun Jul 31, 2005 10:29 am
Contact:

Re: [WAD + TWEAK] Strange Missile Behavior

Post by Dimitris »

The original mega-FAQ page was taken down as it had become increasingly obsolete. I have moved it to a Google doc and if anyone is interested, I can provide access for contributions & updates.
thewood1
Posts: 10104
Joined: Sun Nov 27, 2005 6:24 pm
Location: Boston

Re: [WAD + TWEAK] Strange Missile Behavior

Post by thewood1 »

Send it along.
Horchata
Posts: 23
Joined: Sun Sep 24, 2023 7:52 pm

Re: [WAD + TWEAK] Strange Missile Behavior

Post by Horchata »

The firing backwards problem is happening with any fast ballistic target such as an SM-6 in ship attack mode, some of the 9M96D's turn and intercept but others don't and it wastes all the missiles.
They *can* intercept, but the trajectory is wrong.

I am curious where the range data and general information for the four face radar 3P96-2 [Poliment-Redoute] was sourced from.
Its listed as only 150km, however the land S-350 SA-25 FCR [50N6A] is 400km. 150km seems low and could be related to why it can't intercept them properly as they are detected too late. As a comparison the early 1990s naval TOMBSTONE is listed as 165km and the TOP PLATE [MR-710 Fregat M2EM] is 300km.

https://navyrecognition.com/index.php/f ... siles.html
What would be the point of their desire to integrate the 40N6 or some other longer range missile if the radar range was so short they can't use it?
Dimitris
Posts: 15336
Joined: Sun Jul 31, 2005 10:29 am
Contact:

Re: [WAD + TWEAK] Strange Missile Behavior

Post by Dimitris »

Horchata wrote: Wed Oct 11, 2023 1:36 pm The firing backwards problem is happening with any fast ballistic target such as an SM-6 in ship attack mode, some of the 9M96D's turn and intercept but others don't and it wastes all the missiles.
They *can* intercept, but the trajectory is wrong.
See what I wrote above. Lone-ship CONOPS are being dinosaured by very fast threats. Cooperative engagements are the way forward.
I am curious where the range data and general information for the four face radar 3P96-2 [Poliment-Redoute] was sourced from.
Its listed as only 150km, however the land S-350 SA-25 FCR [50N6A] is 400km. 150km seems low and could be related to why it can't intercept them properly as they are detected too late. As a comparison the early 1990s naval TOMBSTONE is listed as 165km and the TOP PLATE [MR-710 Fregat M2EM] is 300km.
This is the wrong thread and forum for this, please submit it on the DB Github together with any relevant sources.
https://navyrecognition.com/index.php/f ... siles.html
What would be the point of their desire to integrate the 40N6 or some other longer range missile if the radar range was so short they can't use it?
1. Possible CEC mode.
2. Sometimes a long-ranged weapon is paired with a sub-optimal VSR/FCR set simply because there is nothing else available in that range bracket, and other alternatives are too short-ranged for the task. As a result the weapon has a lower practical range against a head-on target, but can put the "surplus" kinematic energy to good use against evading/manouvering threats. Classic example that comes to mind is SM-1MR on OH Perry class FFG.
Post Reply

Return to “Tech Support”