Changelog: R-77 AA missile. Added adaptive proportional navigation factors.

[Ironhand]

I was curious to see the difference in how the missile behaved with the new adaptive proportional navigation. This was a quick and dirty test. AI MiG-29 armed with R-77s. I flew the defensive aircraft and recorded the track. I then replayed the track both pre- and post- updated missile, recording the missile flights. The video's not the highest quality but it suffices:

 

 

It was still the 3rd missile that finally reached me in both cases but the differences in the flyout were intersting.

[AeriaGloria]

It seemed closer in the performance became more similar on that last shot. But the firs two showed huge boosts especially in the initial phase. Gotta go back and fly the J-11A! Can’t wait till all our planes get this. As much as I prefer close in engagements, the ranges are just not right

[*Rage*]

Thanks for the demonstration!

[pepin1234]

Great job! Can you still get the distance for every shot?

[Esac_mirmidon]

Very descriptive. Thanks Ironhand.

[Exorcet]

The APN is a very good change that was really needed. With some tweaks we might see even more substantial jumps in effective missile range. I think lofting will be required to get the most out of it, because the missiles still seem to fly a bit draggy when trying to stay level. I don't know if they're set to try to maintain optimal L/D or just to maintain a specific course no matter the drag, but it looks like there is some room for improvement there.

[*Rage*]

Please do the same when the R27 series is updated too.

[Ironhand]

EDIT: Hopefully the images will show up for everyone this time. ::EDIT ENDS

 

Finally had some time to do a bit more with the results. In all cases, the blue line is the old navigation. Red is the new adaptive navigation. Distance is "Air Distance". I looked at G-force as an indication of the degree of missile maneuvering, especially after the initial boost phase.

 

Missile #1:

 

 

 

 

 

Missile #2:

 

 

 

 

 

Missile #3:

 

 

Edited October 2, 2018 by Ironhand

[Ironhand]

Please do the same when the R27 series is updated too.

 

Sure. I’ll probably need to reinstall a recent pre-missile change version but not a problem.

Edited October 1, 2018 by Ironhand

[IvanK]

Finally had some time to do a bit more with the results. In all cases, the blue line is the old navigation. Red is the new adaptive navigation. Distance is "Air Distance". I looked at G-force as an indication of the degree of missile maneuvering, especially after the initial boost phase.

 

Missile #1:

 

 

 

 

 

Missile #2:

 

 

 

 

 

Missile #3:

 

 

 

 

Not seeing the images Ironhand ?

[TAW_Blaze]

G response seems much smoother, just like on the AMRAAM updated a few weeks ago. Once they implement target memory for the ARH head these missiles will become very deadly. When I was messing around with the AI after the APN update I was shocked how easy it is to notch them.

 

Another thing I noticed with the slammers is that if you break / lose lock before MPRF the missile can oscillate quite a bit and waste some energy. Once it's MPRF it makes no difference. This can be pretty much only seen ingame though, ACMI barely shows it at all for some reason.

[Ironhand]

Not seeing the images Ironhand ?

 

Hmmmm... They were there when I posted. Wonder what happened. I’ll check when I’m home again. This iPod just doesn’t cut it for figuring this out.

[Ironhand]

G response seems much smoother...

 

This showed up exceptionally well in the missing images. Hopefully I can fix the post late tonight.

[Vilab]

the attached file show some weapon data ( drag, lift coef, and proportionnal nav data ) for AIM-7, AIM-120/B/C, R-77, MICA, R-73, Super-530D presented for easy comparison

 

weapon data.txt

 

 

You can see wide différences between the old missiles ( Sea sparrow, MICA ), and the new one ( all the other ).

 

Surprisingly, the AIM-7 coef are extremely different from the AIM-120, R-77 and Super-530 ones.

 

 

 

 

you can find the weapon data file in XXXX\DCSWorld\Scripts\Database\Weapons

 

it can't be read with Microsoft Notepad, the file is way too messy. You will need to use/download a C+ reader/editor ( a lot of free one can be found on the net )

 

 

you will be able to read the datas about missiles, the one showed in Encyclopedia, the numerous coef used to model the proximity fuse, the IR sensor, the proportionnal navigation, the FM, and the launch parameters.

 

the lines were commented in Russian, so the comment were unreadable for me ( ééé^ùùùfgtèèèèààààà ) i found the readable comment in Russian in Cubanace mod file ( Su-57 weapon pack ) and translated them with google translator

 

at the end of the attached file, i have copied past the result of the translation ( can be used as model to read the original files )

 

my own comments are Inside ( ) or inside //( )

 

 

 

PS: the attached file is not attached… hum

 

PPS : fixed

Edited October 1, 2018 by Vilab

[JunMcKill]

Terrific test Ironhand, congrats!.

[OnlyforDCS]

Someone mentioned that the AMRAAM also got the p/n update? I seem to have missed this in any of the recent patch notes. You sure about this?

[Vilab]

as i said, you can pull the data yourself :

 

 

AIM-120B

 

PN_coeffs = {3, -- Number of Entries

5000.0 ,1.0, -- Less 5 km to target Pn = 1

10000.0, 0.5, -- Between 10 and 5 km to target, Pn smoothly changes from 0.5 to 1.0.

15000.0, 0.2}; -- Between 15 and 10 km to target, Pn smoothly changes from 0.2 to 0.5. Longer then 15 km Pn = 0.2.

 

AIM-120C

 

PN_coeffs = {3, -- Number of Entries

5000.0 ,1.0, -- Less 5 km to target Pn = 1

10000.0, 0.5, -- Between 10 and 5 km to target, Pn smoothly changes from 0.5 to 1.0.

15000.0, 0.2}; -- Between 15 and 10 km to target, Pn smoothly changes from 0.2 to 0.5. Longer then 15 km Pn = 0.2.

[OnlyforDCS]

Interesting stuff. Thanks.

[TAW_Blaze]

The changelog was sneaky and said AIM7 family. Which in that case also meant the 120s :)

[Dudikoff]

Anybody tried how these updates work at close range?

 

When I was trying out one of the quick missions with the AIM-7's and firing at one target a few miles out from its 4-5 o' clock position, roughly the same altitude, the missiles seemed to have taken a huge intercept offset to the right that I didn't even see them showing up in front of me. They've never even gotten to the target, but they were fired with the flashing shoot indication.

[jojo]

the attached file show some weapon data ( drag, lift coef, and proportionnal nav data ) for AIM-7, AIM-120/B/C, R-77, MICA, R-73, Super-530D presented for easy comparison

 

[ATTACH]195121[/ATTACH]

 

 

You can see wide différences between the old missiles ( Sea sparrow, MICA ), and the new one ( all the other ).

 

Surprisingly, the AIM-7 coef are extremely different from the AIM-120, R-77 and Super-530 ones.

 

 

 

 

you can find the weapon data file in XXXX\DCSWorld\Scripts\Database\Weapons

 

it can't be read with Microsoft Notepad, the file is way too messy. You will need to use/download a C+ reader/editor ( a lot of free one can be found on the net )

 

 

you will be able to read the datas about missiles, the one showed in Encyclopedia, the numerous coef used to model the proximity fuse, the IR sensor, the proportionnal navigation, the FM, and the launch parameters.

 

the lines were commented in Russian, so the comment were unreadable for me ( ééé^ùùùfgtèèèèààààà ) i found the readable comment in Russian in Cubanace mod file ( Su-57 weapon pack ) and translated them with google translator

 

at the end of the attached file, i have copied past the result of the translation ( can be used as model to read the original files )

 

my own comments are Inside ( ) or inside //( )

 

 

 

PS: the attached file is not attached… hum

 

PPS : fixed

 

That file isn’t relevant for Super 530D. This is ED model.

But Razbam customised it, and it’s coded into M-2000C files.

The last time I checked, Mica had poor performances...:(

 

Still, good news for R-77 :thumbup:

[AeriaGloria]

As a Flanker driver I can definitely say that recently I have had my butt whooped by amraams. I chalked it up to not flying for a while but I guess there was something to it

[GGTharos]

Not flying for a while will do that to you.