How do I maximize JDAM CEP/Precision?

[berk.kp]

Without precise mode the JDAM's are rather unprecise. However is there any way to maximize hit chances? And are there actual stats for the current CEP? How big should a target be to be a suitable JDAM target?

[5e EVC Chappy]

Options/Misc make sure you set it to Lat Long

 

Sent from my SM-T580 using Tapatalk

[delevero]

Yes the Jdam is a bit unprecise at the moment but its not that bad i had good experience hitting within 5-10m of everything i wanted to hit.

 

If you use the mk83 ( big bomb ) this will kill anything no matter what..

But if you use the smaller jdam well then you properbly will not kill a tank, but if its more soft targets you will.

( you will however damage the tank and make it inmobile or make it less efficient due to damages to example optics and maybe crew, but this is not really a thing in dcs yet )

No matter what i would like like to be at the recieving end ;-)

 

I would say in general JDAM's is mostly usefull against stationary targets such as bunkers, buildings at the moment.

 

If you are going to hit vehicles then i recommend another weapon for the time being such as maveric, or laser lgb or you manual drop other type of bombs.

If you use "auto mode" bombing such as CCRP and use ordinary bombs, then you will actual hit very precise with ordinary dumb bombs.

[reise_caparzo]

You can convert Lat Long Decimal to DDMMSS.SS

 

N 25º 13.074

E 54º 13.906

 

then take the 3 last digits and multiply for 0.06 and you have DDMMSS.SS

 

N 25º 13' 04.44"

E 54º 13' 54.36"

 

with DDMMSS.SS JDAMS are extremly precise

[_mu110_]

Entering precise lat long coordinates is already implemented, after hitting enter the first time, type in the decimal and press enter again.

[berk.kp]

tried all the methods, the accuracy never changes, it's the exact same deviation from the target each time. I think I will have to wait for a precise mode. Very rarely I get accurate hits.

[Kang]

Just a thought: have you considered the terrain elevation?

[berk.kp]

Just a thought: have you considered the terrain elevation?

 

Tried all the settings with meters and feet. Can't even sink an oil tanker with the GBU-31, the experience is very disappointing.

[GrEaSeLiTeNiN]

How do I maximize JDAM CEP/Precision?

 

Guys, I have almost perfect accuracy with JDAMs using precise mode. BUT you must have the coordinates source precise as well. For example, if you get DDMMSS and then convert it to precise mode then you wont have accuracy. If your source gives you MGRS and THEN you convert it to precise (DDMMSS.SS) you will have a nice hit.

 

 

Hope it helps

 

 

 

So DDMMSS is the default ME map coords? I know MGRS and DDMM.MMM can be obtained with LAlt Y and can be converted to precise DDMMSS.SS.

Edited April 14, 2019 by GrEaSeLiTeNiN

[SFJackBauer]

Tried all the settings with meters and feet. Can't even sink an oil tanker with the GBU-31, the experience is very disappointing.

 

Consider the possibility that you must be doing something wrong. I just played a mission where I destroyed 4 tanks with direct hits from 30k feet / 12 miles with a single pass dropping 4 GBU-38s.

[DeathAngel1]

Consider the possibility that you must be doing something wrong. I just played a mission where I destroyed 4 tanks with direct hits from 30k feet / 12 miles with a single pass dropping 4 GBU-38s.

 

What coords do you enter?

[Bankler]

I have problems getting precise coordinates from the F10 map. When selecting the DDMM.MMM it indeed gives me 3-decimal precision numbers. However, when moving the cursor around, these coordinates don't update until I move it enough for a 0.016-0.017 increment.

 

So moving the mouse slowly to the right it shows:" "...46.283" "...46.300" "...46.316", instead of updating the number on every pixel.

 

0.017 increments is equal to around 76 ft. So the imprecision is enough to miss the target.

 

Is this a problem everyone has, or is it some local error/glitch?

 

In the mission editor map everything works as expected. This is only when in-game using the F10 map.

[Wags]

In the next update, DD/MM/SS.SS should be added to the ME. Coordinate options can by cycled with LALT+Y. We hope to also have in the F10 may by then.

 

Thanks

[SFJackBauer]

What coords do you enter?

 

Answer:

 

Entering precise lat long coordinates is already implemented, after hitting enter the first time, type in the decimal and press enter again.

 

However the targets were at sea level. I have had trouble hitting high-altitude targets.

[ravenzino]

A couple of tips from my experience so far:

1. Try to set the ANG (vertical attacking angle) to 90 as Wags did in his video. I find it quite helpful.

2. Allow enough time for INS alignment. There was a time when I was carrying two types of JDAM. When I switch from one to the other before the INS alignment is done, the timer will restart from 10min...

3. Get your coordinates right. I used to constantly drop the JDAM a couple of meters short from a same target. It turns out that the coordinates I put in was wrong by one digit when I get it from ME. I then achieved multiple fairly accurate hits after correction. I even did an accurate drop on a parked Mi-8.

4. I would wait a few seconds after seeing the In Range Cue to make sure the bomb gets enough room for any adjustment it might need.

 

I mostly use the biggest one (I think it is the GBU-31xxx), as Hornet can only carry 4 of JDAM so far regardless the model... so why bother using the small ones :D

[GrEaSeLiTeNiN]

Does anyone know what "DKLTR" means? I know it's got something to do with directing the JDAM in TOO to hit the Weapon Designated Waypoint in the HSI. Wags uses it but I noticed in YouTube videos that others do not use it and still hit their waypoint targets.

 

Thanks!

 

UPDATE: DKLTR not required for TOO mode. JDAM will still hit waypoint targets.

 

Edited April 16, 2019 by GrEaSeLiTeNiN

[GrEaSeLiTeNiN]

A couple of tips from my experience so far:

1. Try to set the ANG (vertical attacking angle) to 90 as Wags did in his video. I find it quite helpful.

2. Allow enough time for INS alignment. There was a time when I was carrying two types of JDAM. When I switch from one to the other before the INS alignment is done, the timer will restart from 10min...

3. Get your coordinates right. I used to constantly drop the JDAM a couple of meters short from a same target. It turns out that the coordinates I put in was wrong by one digit when I get it from ME. I then achieved multiple fairly accurate hits after correction. I even did an accurate drop on a parked Mi-8.

4. I would wait a few seconds after seeing the In Range Cue to make sure the bomb gets enough room for any adjustment it might need.

 

I mostly use the biggest one (I think it is the GBU-31xxx), as Hornet can only carry 4 of JDAM so far regardless the model... so why bother using the small ones :D

 

Apart from the right coords, are there certain delivery altitudes and speeds that make for better JDAM/LGB hit success?

 

If Term Angle is 90deg and/or if Term Vel is higher, then would that mean max range is reduced?

 

I think there should be some height/speed parameters during delivery that are needed for the JDAM to achieve its desired Term profile aside from Max/Min range circles alone IRL, but in the sim perhaps it is simplified?

 

I tried hitting two barracks at waypoints 1 and 2 about 25m? apart in one pass using the TOO waypoint method. I often miss the 1st target but will hit the 2nd target. At the 2nd pass I would hit the 1st target that was missed. Not sure why. Kind of an inconsistent feel to it.

 

Also, when I use FAC lasing in the same mission, my LGBs were consistently hitting a point to the left of the 1st target. It's as if the FAC was lasing the ground next to the target building. I wonder if it has something to do with how objects are placed in the ME map.

[ravenzino]

Apart from the right coords, are there certain delivery altitudes and speeds that make for better JDAM/LGB hit success?

 

tbh, I don't know. But I guess it doesn't matter much, similar to LGBs. The higher and faster the better. We are dealing with kinetic energy after all, simple physics :D

btw, my attempts so far were at about angels 18-24. Forgot the speed but should be around 300kts to 350kts.

 

If Term Angle is 90deg and/or if Term Vel is higher, then would that mean max range is reduced?

 

Good question...... However, since that just means some extra dive at the end of the path, it would surprise me if there's any significant reduce. It should also be possible to compensate that reduction, if any significant, by flying at a higher altitude and faster speed. And maybe a bit upward pitch as well.

 

I think there should be some height/speed parameters during delivery that are needed for the JDAM to achieve its desired Term profile aside from Max/Min range circles alone IRL, but in the sim perhaps it is simplified?

 

Maybe... Those circles are dynamically adjusted to your current height and speed. That somehow looks good enough to me......

 

I tried hitting two barracks at waypoints 1 and 2 about 25m? apart in one pass using the TOO waypoint method. I often miss the 1st target but will hit the 2nd target. At the 2nd pass I would hit the 1st target that was missed. Not sure why. Kind of an inconsistent feel to it.

 

Also, when I use FAC lasing in the same mission, my LGBs were consistently hitting a point to the left of the 1st target. It's as if the FAC was lasing the ground next to the target building. I wonder if it has something to do with how objects are placed in the ME map.

 

Haven't tried multiple drops in one go... will see~

Edited April 15, 2019 by ravenzino

[GrEaSeLiTeNiN]

tbh, I don't know. But I guess it doesn't matter much, similar to LGBs. The higher and faster the better. We are dealing with kinetic energy after all, simple physics :D

btw, my attempts so far were at about angels 18-24. Forgot the speed but should be around 300kts to 350kts.

 

I've gotten consistent success now with JDAMs/TOO on 2 consecutive waypoint targets at 18000ft. At 8000ft it wasn't always good. Also, 'HSI DKLTR' isn't necessary. :thumbup:

[colo]

You cannot use F10 map, it doesn't work.

You can use F10 map, but you must use MGRS coordinates on map - they are precise - if you move mouse over object on map they increments in small steps.

Just recalculate MGRS to DDMMSS.SS and enter it via UFC in precise mode

 

 

If you switch map coords to DDMMSS or DDMM.MMM if you move mouse over objects coords aren't updated in small steps (it looks like that DDMM.MMM is just recalculated from DDMMSS)

[colo]

In the next update, DD/MM/SS.SS should be added to the ME. Coordinate options can by cycled with LALT+Y. We hope to also have in the F10 may by then.

Thanks

 

 

It would be also nice if the coordinates numbers will be shifted more to the left to the label "MAP" because the end of coords aren't visible in high elevations if horizontal screen resolution is lower

[jonsky7]

It would be also nice if the coordinates numbers will be shifted more to the left to the label "MAP" because the end of coords aren't visible in high elevations if horizontal screen resolution is lower

 

And both sets of coordinates showing in the "unit" box. And then those coordinates being in the same format as displayed in the top left.