JASSM-XR (Extra Extended Range)

kqcke for you said:
If i remember it right AGM-158D is now XR? So it is said to have a new wing Design. Has someone any information on that?
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AFAIK AGM-158D is a JASSM ER with M code GPS, revised wing with a bit more range (like AGM-158B2), and a weapon datalink. If there is an ultra long ranged version of JASSM it hasn’t come out of the shadows yet. IMO a major range increase would involve a big airframe stretch making it more of a 3000 lb class weapon or else a warhead reduction in favor of more fuel.
 
Another way to increase range is to have a more efficient engine than the current Williams F107 turbofan in the JASSM-ER, which is quite old at this point. That said, I'm not aware of any efforts to integrate a new engine into the JASSM.
 
Sadly not near a computer to do a more precise length comparison but just looking at it, i'd say there's a decent chance the XR is 20% longer than other variants.
 
If the "blue" band around the fuseluge is the same location for the non-XR and XR versions is any indication, the body definitely looks lengthened .....

Alternatively, use the lug distance as a measurement guide .....
 
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For comparison ....


50f794ac3233a27f1b0be4ccc94c702b.jpg
 
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kqcke for you said:
8 hours and then we know what JASSM-XR is tought it does look longer than the normal one.
www.lockheedmartin.com

XR – Taking Today’s Cruise Missile Further

Our commitment to the warfighter has driven us to develop the AGM-158 eXtreme Range (XR) cruise missile.
www.lockheedmartin.com www.lockheedmartin.com
(FlameCxbra found that)
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So, nothing seems to have changed on the website after the countdown hit zero. Good job, LockMart?
 
I think the countdown was to September 16th when LM will have the model on display at the Air, Space & Cyber Conference.
 
bring_it_on said:
I think the countdown was to September 16th when LM will have the model on display at the Air, Space & Cyber Conference.
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Seems like I'd have set the countdown to when the exhibition actually opens, which isn't until 1115 EDT.
 
jassm xr.png
the middle one is the XR mockup.
The top one is regular jssm mockup. chosen because its the closest angle to the xr image, for better measurements. it appears to be slightly shorter.
the bottom one is real jassm, scaled so the lugs are at same positions as those on XR image. it appears to be even more short than the top most image.
Overall, i'd say the chances the XR is longer than regular JASSM are considerable. But it's hard to say by how much. Could be 10 to 20% though.
 
The comparison is assuming that the width and height is the same of course. The question is did they stretch it to AGM-86 size or just big enough to still fit in the B-1B's bays, the shortest of which is 5.3m I think.
 
Forest Green said:
The comparison is assuming that the width and height is the same of course. The question is did they stretch it to AGM-86 size or just big enough to still fit in the B-1B's bays, the shortest of which is 5.3m I think.
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Or if they wanted to use it in the Mk41 VLS / Typhon they could go Tomahawk length but it would look longer than what they have in that picture.
 
Lrso is supposed to be an ongoing program? Different from jassm xr?
Maybe its possible that lrso and xr will end up being related?
 
totoro said:
Lrso is supposed to be an ongoing program? Different from jassm xr?
Maybe its possible that lrso and xr will end up being related?
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Would be an interesting trick given JASSM is LM and LRSO is RTX.
 
sferrin said:
Yeah. That doesn't mean it was a controlling factor. We don't know it's 20 feet long.
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I agree, we don't know yet. But we do know that this length of missiles determines its mass. Eight such missiles on a carousel launcher fully realize the capabilities of the B-21, 13,500 kg / 30,000 lb
 
Forest Green said:
The comparison is assuming that the width and height is the same of course. The question is did they stretch it to AGM-86 size or just big enough to still fit in the B-1B's bays, the shortest of which is 5.3m I think.
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The B-52 is probably also weight and or length limited using the heavy stores adaptor beam. AGM-86 uses a different nuclear specific (PAL) pylon with an older interface that AFAIK is not MIL-1760, so you could not just hook a 3,000# store up externally without modifications to stores management. There recently was a USAF RFI for piping those pylons with 1760 for future oversized hypersonic weapons.
 
totoro said:
Lrso is supposed to be an ongoing program? Different from jassm xr?
Maybe its possible that lrso and xr will end up being related?
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LRSO is a nuclear only weapon designed AGM-181; the LM lost that bid and a proposed conventional version of LRSO was dropped early on.
 
So this is a totally different XR...

Go back to 2018, LM said the new XR has the same form factor as AGM-158B, those who can carry B can also carry XR. The significant range increase is due to redesin air wing and MCU control:

" ..."Responsible for capture and successful execution of JASSM development programs, to include new Wings and cross program missile control unit (MCU). Successful execution of these technology upgrades is critical to the fielding of the next variant of JASSM (D Variant) and LRASM. The new Wings and MCU will provide the extended range and mission computing power needed to keep LM cruise missiles relevant."..."


... "JASSM-XR is intended to be a spiral upgrade to the ER missile, and as such, it will perform similar missions for the warfighter," Monaghen said Sept. 13. "This part of the upgrade activity is for a new [MCU] computer which will support the other planned capabilities, including new wing designs to increase standoff range through aerodynamic efficiency, and a new GPS unit to further advance our level of protection." ...


"...It is the same shape as JASSM-ER, which is projected to fly on a range of bomber and fighter aircraft, and won't require any aircraft modifications to carry it...."

Lockheed receives contract for new JASSM lot while maturing 'extreme-range' variant | InsideDefense.com

Lockheed Martin recently received another contract worth nearly $391 million to build its 16th lot of AGM-158 Joint Air-to-Surface Standoff Missiles for the Air Force, seven months after the service planned to award those funds.
insidedefense.com insidedefense.com
The LRASM 1.1 also adopt this redesign wing for increasing range:

"...The update package, named LRASM 1.1, includes unspecified changes to the shape of the wing for better range..."



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But AFA LM said the XR has longer length and heavier weight to carry more fuel for longer range, which F-16 can not carry it.

breakingdefense.com

Lockheed announces new 'extreme range' version of JASSM cruise missile - Breaking Defense

Lockheed is putting its own funds toward early development work on the missile, which could “significantly” expand the missile’s reach past the JASSM and the Long-Range Anti-Ship Missile variants currently being produced for the Air Force and Navy, said Michael Rothstein, Lockheed’s vice...
breakingdefense.com breakingdefense.com


So where is the wing redesign JASSM?
 
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I just stumbled across this slick LM marketing video for the missile:


The threats our customers face while completing their missions continue to evolve in complexity, scale and severity. They need the right tools to complete their missions and come home safely. Stemming from the fully-qualified JASSM-ER weapon system and the evolutionary LRASM weapon system, AGM-158 XR offers a low-risk solution at a fraction of the cost of a new start program in significantly less time.
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