Massive Ordnance Penetrator (MOP)

#1
Its hard to imagine a bomb the size of 30,000 pounds of high explosive . I have only seen pictures of what a two thousand pound bomb can do.

http://www.globalsecurity.org/military/systems/munitions/dshtw.htm

Boeing's Phantom Works is leading the effort to demonstrate the Massive Ordnance Penetrator (MOP). The three-phase technology demonstration builds on design studies that Boeing had conducted for the laboratory. Flight testing is envisaged around 2006. The 6 m [20 feet] long MOP features short-span wings and trellis-type tails. The 13,600 kg [30,000 lb] weapon contains a 2,700 kg [6,000 lb] explosive charge. MOP is designed to go deeper than any nuclear bunker buster and take out 25 percent of the underground and deeply buried targets. It is expected to penetrate as much as 60 meters [200 feet] through 5,000 psi reinforced concrete. It will burrow 8 meters into the ground through 10,000 psi reinforced concrete. Northrop Grumman is working on with Boeing to develop this conventional bunker buster. They are under contract to Air Force Research Laboratory's Munitions Directorate at Eglin Air Force Base, Florida, and Defense Threat Reduction Agency.
 
#2
The US has been working on 'conventional' deep-penetration weapons for years now, primarily to deal with the North Korea/Iran nuke programmes. The only alternative was just too much to contemplate, even for the Bush administration, but it appears that the conventional route may have worked, as efforts for deep-penetrating nukes have now (AFAIK) been terminated.
 
#4
There is nothing new under the sun, and the US follows the UK yet again :D



We were dropping 12,000lbs on Adolf's little pixies back in 19longtime.

GRANDSLAM contained 9,000 of Torpex, guaranteed to ruin some goose-steppers day.
 
#7
neo_con,

the first atomic bomb (the trinity test) was the equivelant of approximately 20,000 TONS of TNT. The was the same design as the bomb dropped on nagasaki.

the first bomb used in anger (on hiroshima) was the "little boy". this had an equivalent yield of 15,000 tons of TNT.

Also, according to the above info, there is only 6,000lb of explosive. the rest will be a heavy and very hard nose to get the bomb through the concrete, so the device can explode IN the bunker.

There was talk of developing a nuclear "bunker buster". Due to political considerations, the US congress (IIRC) stopped its development.

SC.

edited for unit consistency!
 
#8
PartTimePongo said:
There is nothing new under the sun, and the US follows the UK yet again :D



We were dropping 12,000lbs on Adolf's little pixies back in 19longtime.

GRANDSLAM contained 9,000 of Torpex, guaranteed to ruin some goose-steppers day.
Ah a beautiful pic, one of those could and often did granulate an entire Berlin City block. Also it should be noted that when the US President annonced to the US public the dropping of the A Bomb he compared it as being bigger than the 'British Grandslam'. Which indicates that it was well known in the US.
 
#9
armchair_jihad said:
Ah a beautiful pic, one of those could and often did granulate an entire Berlin City block.
You sure about that? From what I’ve read 617 Sqdrn was very careful about where they dropped those things, as they where as rare as hens teeth, and 617 was Very accurate with SABS.

Anyone got any pictures of that Crater left at the Tunnel of the first Tallboy raid? Now thats impressive!
 
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#10
Listy said:
armchair_jihad said:
Ah a beautiful pic, one of those could and often did granulate an entire Berlin City block.
You sure about that? From what I’ve read 617 Sqdrn was very careful about where they dropped those things, as they where as rare as hens teeth, and 617 was Very accurate with SABS.

Anyone got any pictures of that Crater left at the Tunnel of the first Tallboy raid? Now thats impressive!
Listy, you are correct - the Main Force Bombers would regularly drop 8000 lb "blockbusters" or "cookies" on their raids, along with incendaries. These were little more than dustbins full of TNT. The idea was that the cookies would open up houses and the incendaries would set fire to the wreckage. See Dresden/Hamburg/Cologne for when it worked.

The supply of Tallboys and Grand Slams was very carefully husbanded and used on special targets only.
 
#12
The Grand Slam is actually very relevant to the role envisaged for this MOP toy... One of its roles was to take out targets like bridges and tunnels by shaking them to bits as a result of delayed initiation after it had penetrated the ground (went supersonic on the way down, IIRC). I'd imagine that, if we could find a spare one tucked away somewhere, and drop it in the middle of an Afghan cave complex, it'd do quite a good job of making sure everyone inside never saw the light of day again. Meanwhile, some 'MOABs' above ground to deafen everyone within a few square miles, and bob's yer uncle..
 
#13
The clever bit of the Grandslam was that the tail fins were angled slightly to get the thing to spin, therefore allowing the kinetic energy of the thing to corkscrew it's way into the target.

I wouldn't fancy being anywhere near either of the buggers above or below ground!
 
#15
Stonker said:
NEO_CON said:
That 30,000 pound bomb is half the yield of the first atomic bomb. Its a sobering thought.
. . . but no nuclear fallout . . . .unless you hit the wrong kind of target . . . . :D
Does anyone know what actually happens if you bomb a operating nuclear reactor?
 
#16
slippersapper said:
The clever bit of the Grandslam was that the tail fins were angled slightly to get the thing to spin, therefore allowing the kinetic energy of the thing to corkscrew it's way into the target.
Not as such, when they where first testing the Tallboy, it went all over the place and didn't hit cleanly. So Barns Wallis off set the fins to keep it on target.

One of its roles was to take out targets like bridges and tunnels by shaking them to bits as a result of delayed initiation after it had penetrated the ground (went supersonic on the way down, IIRC).
I thought they where after the “Trapdoor” effect, where the bomb Penetrates the ground and creates a huge cavern underneath the target, basically undermining it, it then collapses into the hole. Think of the footage you've seen of some of the underground nuke tests in Nevada. That sort of effect.

The really scary thing about the tallboy (and the Grandslam) was that it wasn't dropped from high enough altitude to achieve full effect, as Lancs couldn't get the altitude Barns Wallis envisaged.
 
#17
dan_man said:
Stonker said:
NEO_CON said:
That 30,000 pound bomb is half the yield of the first atomic bomb. Its a sobering thought.
. . . but no nuclear fallout . . . .unless you hit the wrong kind of target . . . . :D
Does anyone know what actually happens if you bomb a operating nuclear reactor?
. . . I hope nobody is curious enough to try and find out.

I would think that the Chernobyl incident should give some kind of indication.
 
#18
neo_con,

the first atomic bomb (the trinity test) was the equivelant of approximately 20,000 TONS of TNT. The was the same design as the bomb dropped on nagasaki.

the first bomb used in anger (on hiroshima) was the "little boy". this had an equivalent yield of 15,000 tons of TNT.

Also, according to the above info, there is only 6,000lb of explosive. the rest will be a heavy and very hard nose to get the bomb through the concrete, so the device can explode IN the bunker.
You are right ,I read the 30,000 and went blank ,stunned . That does put it in a better perspective. In further checking, a 2000 pound bomb has 650 pounds of explosive. I have seen pictures of the crater a 2,000 pound bomb and they are immense. The explosion of 6000 pounds of explosive must be hard to imagine, but Nuclear weapons are in a category by themselves.
 
#19
Bear in mind also that modern explosives have a higher Figure of Power than the TNT in Grandslams and similar so their 'yield' will be greater. For effects of Grandslams have a look for details of the U Boat pens at Brest.

There may also be some wave guidance or other charge manipulation involved.
 

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