Mk-82 vs. GBU-38 JDAM

[JuggernautOfWar 1]

The Harrier currently uses GBU-38 JDAM ammunition but is incorrectly labeled as Mk-82 dumb bomb ammunition. The GBU-38 is basically the same 500lb bomb as a Mk-82 but with an added guidance system, as in the game. The GBU-38 is never referred to as a Mk-82 in the military, nor should it be in this game.

[Sif 10]

The Harrier currently uses GBU-38 JDAM ammunition but is incorrectly labeled as Mk-82 dumb bomb ammunition. The GBU-38 is basically the same 500lb bomb as a Mk-82 but with an added guidance system, as in the game. The GBU-38 is never referred to as a Mk-82 in the military, nor should it be in this game.

The bombs that drop are Mk-82 just with the JDAM smart munitions systems. There's no difference between payload, it's just the guidance system that makes smart.

[JuggernautOfWar 1]

Exactly. Go up to an Airman or Marine (me) and ask if a Mk-82 is a JDAM. We'll say "No, in fact a Mk-82 is a dumb bomb. Once a 500lb bomb is outfitted with a JDAM guidance system it's then called a GBU-38." The G in GBU is Guided, which a Mk82 is not.

[[frl]myke 14]

Like that?

http://arma2base.de/content/images/glt_airweaponsreplacement1.jpg >100kb

[Daniel 0]

The G in GBU is Guided, which a Mk82 is not.

More to the point, the JDAM is GPS guided, which the Mk82s in game are not. No stock Arma2 weapons are GPS guided, there are no JDAMs in stock Arma2.

That's why they're designated as Mk82s.

GPS, incidentally, has to be the most boring method of delivering a weapon I can imagine. :p

Edited January 19, 2011 by Daniel

[NoRailgunner 0]

Guess BIS just wanted to include dumb and smart bombs. Btw the RPG-18 is obsolete RF are using RPG-26/27... such small things slip somehow through. ;)

[JuggernautOfWar 1]

I always figured the lack of JDAM visibly on the bomb was due to lazy developers, but apparently a Mk-82 can fly to a target dead-on every time. I guess us Harrier pilots are gods who control winds at a very precise level. :p

Guess BIS just wanted to include dumb and smart bombs. Btw the RPG-18 is obsolete RF are using RPG-26/27... such small things slip somehow through. ;)

I was wondering about that. The RF hasn't used RPG-18s for some time now.

[An-225 0]

AFAIK, the Mk-82 has guidance in game so that it can be used by AI. That it can be guided by human players is a consequence of this, hence the lack of JDAM kit.

Still, in the absence of any sort of CCIP, the velocity vector gives a rough approximation of where the bomb will land.

[noubernou 77]

More to the point, the JDAM is GPS guided, which the Mk82s in game are not. No stock Arma2 weapons are GPS guided, there are no JDAMs in stock Arma2.

That's why they're designated as Mk82s.

GPS, incidentally, has to be the most boring method of delivering a weapon I can imagine. :p

Actually its not a GPS guided bomb, its an INS (inertial navigation system) guided bomb with GPS updates. INS is actually pretty cool. The INS/GPS system of the plane feeds the bomb its initial coordinates at release. Using this, accelerometers and other sensors in the weapon detect its velocity, its pitch and roll, and other factors of its flight through space to determine where it is in space. It also knows where it SHOULD be in space. It will then make corrections to move back into its needed trajectory. Every so often the system is able to pull a GPS update (normally GPS is too slow to handle constant guidance) and get comparison to its INS predicted location. It then refines its INS data using the GPS data and continues to correct till it reaches the target. :)

Also the cool thing is that the JTAC/FAC is able to send coordinates in numerous formats (grid, UTM, etc) to the drop planes and the planes just need to fly into the launch envelope of the weapon and the weapon will release. :)

JDAM rock. :D

They aren't as accurate as laser guided bombs, but they can hit in all weather, which is pretty cool if you ask me!

[max power 21]

INS guesses where it is by constantly measuring linear and angular acceleration loads. It gets less accurate over time, but that's no problem when you're a bomb with only seconds to live.

[[frl]myke 14]

GPS/INS lock and guidance "fake" simulation in the works. ;)

W_Sh4hGOvWc

[Daniel 0]

@NouberNou

Gotcha, thanks for the info!

@Mike

That looks sweet!

[max power 21]

@Myke

And now we know we can collapse those giant rock formations... ???

[[frl]myke 14]

@Myke

And now we know we can collapse those giant rock formations... ???

Aye i know, you could do it a thousand times better. At least i do try my best, knowing i'm only a beginner compared to you.

[max power 21]

You seem like you think I'm criticizing you. I'm not sure what made you think that. I was commenting on the fact that one of the bombs made a mountain collapse, which shouldn't be possible, but that has nothing to do with your gps guiding script...

[[asa]oden 0]

That's pretty awesome Myke :)

I really can't stand flying in ArmA-series but this was really nice - good job.

(also, a small roffle for that rock desintegrating haha)

[[frl]myke 14]

You seem like you think I'm criticizing you. I'm not sure what made you think that. I was commenting on the fact that one of the bombs made a mountain collapse, which shouldn't be possible, but that has nothing to do with your gps guiding script...

My apologies, it sounded zynical to me. Maybe next time use a ;) instead of ???

:D

[Macadam Cow 1]

Myke;1843466']GPS/INS lock and guidance "fake" simulation in the works. ;)

That's it' date=' I can't hold it anymore,

This is for you

:D

[max power 21]

Myke;1847420']My apologies' date=' it sounded zynical to me. Maybe next time use a ;) instead of ???

:D[/quote']

Haha. When people use the winky smilie I usually read that sarcastically. At any rate, great work in your gps bombing system. That scripting stuff is above my head.

[[frl]myke 14]

That's it, I can't hold it anymore,

This is for you

:D

LMAO, if already the simple announcement makes you feel this way, then you should try out the updated Missilebox. And for the rest of my life i'll have to check if there is a Macadam Cow standing behind me before i bend over. :D