reported JSOW has way too small drag - record of 85 km glide

[Fri13]

 

Witnessed today a JSOW AGM-154C launch at 1847 m ASL altitude, at speed of 585 km/h and it glided 10 minutes for ~85 km and it would have likely continued another 100 km if the mission would have not ended, as TacView shows that it would have kinetic energy and air speed as well altitude to do it 2-3 times longer if not disturbed.

 

 

Yes, it is boring video as it is playing in real-time the whole 10 minutes from release to end of mission. But at the end of the video you can still see nicely the glide bomb parameters how it could have continued its travel almost forever.

 

The bomb should have about 130 km maximum range at very high altitude release and at high speed, and that only on paper really. But now JSOW can glide even past that from release parameters that shouldn't even be usable for minimum range.

 

 

[July]

+1

 

I don't have a .trk file handy atm to show but have a tacview if anyone is interested, but I have personally been able to get 120NM hits with the AGM-154Cs from doing a manual release while seeing the same behaviour stated above.

I am almost certain they can go further, terrain permitting.

[vCSG3 Bloat 203]

I recently released a JSOW C without populating PP mode on it and it kept gliding for in excess of 250 miles, with hardly any altitude loss...

[Fri13]

Hold on.... Your JSOW glided that huge curve and yet ended to 250 nmi from launch point?

[vCSG3 Bloat 203]

On 2/6/2021 at 7:34 PM, Fri13 said:

Hold on.... Your JSOW glided that huge curve and yet ended to 250 nmi from launch point?

yes, linear distance covered probably closer to 400nm

[Fri13]

Can someone get a trackfile when this happens to them? As the JSOW is without drag now. And as it can perform so ridiculous glides right now, it will mean it does totally wrong as well at the shorter ranges. 

[Hawkmoon]

are you guys able to hit something ?

mine just roll off near the supposed target

[July]

Ok, since there have been no .trk files supplied showing off just how crazy the drag profile of the AGM-154Cs are (afaik the AGM-154A does not behave the same "broken" way) I am uploading one here. All four AGM-154Cs were released at +95NM, with all 4 hitting an arbitrarily selected waypoint just for demonstration purposes. All four also successfully completed pop-up attacks, from as low as 200 ft MSL.

 

If you do happen to watch the .trk, please let me know what you think.

(Yes, the two JSOWs that loft into 40k ft do end up smashing the same targeted waypoint.)

AGM154C GLIDE.trk

Edited March 15, 2021 by July

[July]

Bumping this thread for visibility because there is now a trackfile to reference showcasing the AGM-154C drag profile. A reply and potential change to the thread tag is in order.

Edited March 22, 2021 by July

[dorianR666]

On 3/13/2021 at 6:20 PM, Hawkmoon said:

are you guys able to hit something ?

mine just roll off near the supposed target

thats another, different, bug related to JSOW A

[BIGNEWY]

This has been reported to the team.

 

thanks