www.thedrive.com
Russian GPS jamming will only be effective in the last few km of flight. It will get decent GPS data at launch and will continue to receive data on the way to the target.30 meters may not be accurate enough even with large bombs.
Joint Direct Attack Munition GBU- 31/32/38
The Joint Direct Attack Munition is a guidance tail kit that converts existing unguided free-fall bombs into accurate, adverse weather "smart" munitions.www.af.mil
I get the feeling that the speak of Russians effectively jamming the GPS guidance of GMLRS and JDAM going on in some (mostly American) mass media based on anonymous Ukrainian sources is a Ukrainian ploy intended to make Russians place and actively use their limited number of jammers next to strategic targets, thus both allowing the Ukrainian military intelligence to narrow down their search and making the jammers very vulnerable to attacks by AGM-88 HARM or other precision weapons.Russian GPS jamming will only be effective in the last few km of flight. It will get decent GPS data at launch and will continue to receive data on the way to the target.30 meters may not be accurate enough even with large bombs.Joint Direct Attack Munition GBU- 31/32/38
The Joint Direct Attack Munition is a guidance tail kit that converts existing unguided free-fall bombs into accurate, adverse weather "smart" munitions.www.af.mil
Basically its unlikely the CEP will veer that much off target, they might get a CEP of 15 metres...which for a 500/1000lb bomb is close enough....Russian GPS jammers are also exceptionally rare and high value. They're not going to be within 20km of the front (if that, their effect will drop away as distance and terrain gets in the way), and given what we know about Ukrainian use of JDAM/JDAM-ER and the way their aircraft will have to release it (i.e low and fast from a pop-up loft profile) they're not going to be targeting much beyond 10-15 km of the front line....
www.airandspaceforces.com
“The aft manoeuvre system” whatever that entails
www.thedrive.com
They look to be using the UMPK kit with increasingly larger/heavier bombs.Russia’s New Supersized Glide Bomb: Our Best Look Yet
FAB-1500 M54s with wing kits are three times larger and are far more destructive than the glide bombs Russia has been using in Ukraine.
You can describe UMPK as a "kamikaze glider" - a separate airframe with a suspended bomb. Currently it's ugly, but it seems to evolve into a scaled version of a civilian glider?
Or they can be used to deliver things like normal naval mines, or even supply crates. It's an interesting multitool.
t.me
So russian SPEAR?Russian TG channel Fighterbomber talks about it:
It's full name UMPB D-30SN
UMPB is an acronym "УМПБ" - "Универсальный Межвидовой Планирующий Боеприпас", which would translate as Joint(?) Universal Gliding Munition . D-30SN indicates diameter, 30cm. By his words can be used on plane or MLRS, hence 30cm diameter. Russian airforce currently uses variant w/o jet engine, but likely to install it later.
Fighterbomber
Хохлы оценили нашу новинку на поле боя. В этот раз ей стала вундервафля под названием УМПБ Д-30СН что расшифровывается как Универсальный Межвидовой Планирующий Боеприпас (в некоторых источниках Бомба) диаметром 30 см. По сути это планирующая бомба, где вся хурма, а это блоки управления и...
Essentially, it's a Russian SDB, albeit heavier and w/ jet engine.
Heavier and w/o seeker. But yes, close. I'd say it mix of both SDB/GLSDB/SPEAR.
It's quite shorter than Grom:
storymaps.arcgis.com
www.twz.com
Interesting just how simple they are from layout to materials used. One size fits all....
It's not like the JDAM is particularly more complicated in assembly. Just that Ed Heineman's Mk80 series low drag bombs were rather brilliantly designed to be easily changed around in terms of fuzing and tail surfaces. Everyone else looked at that and made their guidance packs screw into the same fuze fittings as the nose and tail surfaces.
