@fmeriqui it funny that something you see alot on these types of videos...you should be glad to see the army actually trains its soldiers and doesnt send them to war and let them work it out all by themselfs
OMG! They blew up a gamma goat. That's an off road sin. The military doesn't surplus those things. Sad 'cause they are one of the best offroad machines ever.
The editor should have left the sound of the detonations.
I talked to one of the NCOs who was there. He tried to get a good shot of it but, as you can see, didn't happen. He guessed it was in the 4-5 deep range.
I've used these for years and can't fathom one boring a hole over 10-12'. The deepest I ever got was maybe 12' under ideal conditions. Soil absorbs and disburses a lot of the power of the explosion, especially C4 and their ilk which have high rates of burn that are better for steel cutting rather than dirt moving.
Cool! An insider! My source for this video was all secretive and didn't provide a whole lot of details on this happy, happy day. If you've got any more tidbits or anecdotes, please share them.
I received a correction that the shaped charge used here contains 40 lbs. of explosive and not 15 as stated in the video. My source for this video says he is *so* humiliated.
Just a slight clarification: the M3A1 is a 40lb charge with 29 lbs of explosive filler. The 15/40 confusion probably arose from the fact that there is a similar, but smaller shaped charge, the M2A4, which is a 15lb charge with 11.5 lbs of explosive filler :P
Wait, what? You're talking about the penetration of the shaped charge into the dirt? You'd be lucky to get much beyond 20 cone diameters. The M3A1 has a CD just under 11 inches. I'll assume you meant 20 feet, not 200...
Well, I did the math, and compared to the 30g HMX shaped charge in the HEAT round for the apachi helicopter's 30mm cannon, which penetrates 5in of steel, the 40lb of comp B in the M3A1 displace enough volume of material to go through 4-5ft of steel, or 20-30ft of dirt
1. The M3A1 is called a 40 lb shaped charge, but it actually only has 29 lbs of Comp B filler.
2. When I said lucky to get 20 feet of penetration in dirt, I meant it. That would be through really loose, very soft soil. In military testing, the M3A1 will reliably penetrate only 84 inches of dirt- 7 feet.
3. The M3A1 will reliably penetrate only 20 inches of steel armor plate. Under ideal conditions, you could possibly get double that. Still well under 4 feet.
4. I have no idea why you're basing your calculations on explosive mass. Penetration calculations are based on liner design. Since liner designs vary widely, I have no idea why you're using HEAT round penetration as a comparison, when precise military testing figures for M3A1 penetration through various materials are widely available.
5. If you start off by saying "based off my experience" you shouldn't use fuzzy math to come up with incorrect figures. Unless your experience is none.
that was assuming that it was the same dimensions as the 30mm HEAT round, and that it had 40lbs of comp B, and that was not fuzzy math, if you scail up the 30mm HEAT round, it works
The problem is you can't assume they're going to be identical designs- there's a great deal of variation in shaped charge liners. Especially comparing a small, high performance armor piercing round to a large demolition charge... you can draw some conclusions from the comparison, but tested results will tend to be different from the guesstimate. Better to just go with published figures :P
what are they used? (the shaped charges)
Neodymio 2 months ago
@Neodymio I believe to blow up "hardened" targets like bunkers or other reinforced structures.
kirkbocek 1 month ago
@Neodymio
They are used against tanks.
HABRADASHR 1 week ago
Its not exactly a waste of money they need to train using this stuff as combat engineers no reason why they shouldnt have fun with it
Zeksteve 4 months ago
Lucky assholes... I hate my admin MOS. I can't blow anything up.
poobert 7 months ago
cus im TNT guna blow your taliban sky high
Dazzerlikestech1 1 year ago
Ha, I could make this at home with a martini glass, a steel pipe, some bamboo shish kabob skewers and some homemade high explosives
nunvikingsofthesea 1 year ago
good to know where my taxes are going....
fmeriqui 2 years ago 5
This was a regular training exercise. They were going to blow up *something*
kirkbocek 1 year ago 3
@fmeriqui it funny that something you see alot on these types of videos...you should be glad to see the army actually trains its soldiers and doesnt send them to war and let them work it out all by themselfs
1ukjunglednbraver 8 months ago
@1ukjunglednbraver Hear. Hear.
kirkbocek 8 months ago
OMG! They blew up a gamma goat. That's an off road sin. The military doesn't surplus those things. Sad 'cause they are one of the best offroad machines ever.
The editor should have left the sound of the detonations.
Culturamospontaneo 2 years ago
The editor *would* have left the sound in had he been *given* the sound in the first place. Seems like the Spartans are a secretive bunch. ;)
kirkbocek 2 years ago
Howdy all;
I talked to one of the NCOs who was there. He tried to get a good shot of it but, as you can see, didn't happen. He guessed it was in the 4-5 deep range.
I've used these for years and can't fathom one boring a hole over 10-12'. The deepest I ever got was maybe 12' under ideal conditions. Soil absorbs and disburses a lot of the power of the explosion, especially C4 and their ilk which have high rates of burn that are better for steel cutting rather than dirt moving.
Thetwovets 2 years ago
Cool! An insider! My source for this video was all secretive and didn't provide a whole lot of details on this happy, happy day. If you've got any more tidbits or anecdotes, please share them.
kirkbocek 2 years ago
I received a correction that the shaped charge used here contains 40 lbs. of explosive and not 15 as stated in the video. My source for this video says he is *so* humiliated.
kirkbocek 2 years ago
Just a slight clarification: the M3A1 is a 40lb charge with 29 lbs of explosive filler. The 15/40 confusion probably arose from the fact that there is a similar, but smaller shaped charge, the M2A4, which is a 15lb charge with 11.5 lbs of explosive filler :P
AnonymousUploads 2 years ago
Thanks for the details. It is *so* important that one uses the correct explosive power when cleansing data from one's hard drive. ;)
kirkbocek 2 years ago
Unfortunately, I have no idea. However I'm sure it was deep enough to support a coating of 10 vaporized hard drives. :)
kirkbocek 2 years ago
Nice.
Just how deep was that hole made by the shaped charge?
imsabbel 2 years ago 2
based on my experience with shaped charges, I wouldn't be surprized if one that size went over 200 feet deep
BenHBX 2 years ago
Wait, what? You're talking about the penetration of the shaped charge into the dirt? You'd be lucky to get much beyond 20 cone diameters. The M3A1 has a CD just under 11 inches. I'll assume you meant 20 feet, not 200...
AnonymousUploads 2 years ago
Well, I did the math, and compared to the 30g HMX shaped charge in the HEAT round for the apachi helicopter's 30mm cannon, which penetrates 5in of steel, the 40lb of comp B in the M3A1 displace enough volume of material to go through 4-5ft of steel, or 20-30ft of dirt
BenHBX 2 years ago
1. The M3A1 is called a 40 lb shaped charge, but it actually only has 29 lbs of Comp B filler.
2. When I said lucky to get 20 feet of penetration in dirt, I meant it. That would be through really loose, very soft soil. In military testing, the M3A1 will reliably penetrate only 84 inches of dirt- 7 feet.
3. The M3A1 will reliably penetrate only 20 inches of steel armor plate. Under ideal conditions, you could possibly get double that. Still well under 4 feet.
AnonymousUploads 2 years ago
4. I have no idea why you're basing your calculations on explosive mass. Penetration calculations are based on liner design. Since liner designs vary widely, I have no idea why you're using HEAT round penetration as a comparison, when precise military testing figures for M3A1 penetration through various materials are widely available.
5. If you start off by saying "based off my experience" you shouldn't use fuzzy math to come up with incorrect figures. Unless your experience is none.
AnonymousUploads 2 years ago
that was assuming that it was the same dimensions as the 30mm HEAT round, and that it had 40lbs of comp B, and that was not fuzzy math, if you scail up the 30mm HEAT round, it works
BenHBX 2 years ago
The problem is you can't assume they're going to be identical designs- there's a great deal of variation in shaped charge liners. Especially comparing a small, high performance armor piercing round to a large demolition charge... you can draw some conclusions from the comparison, but tested results will tend to be different from the guesstimate. Better to just go with published figures :P
AnonymousUploads 2 years ago
It is truly amazing what the right tool for the wrong job looks like. AWESOME!
Seandemonium 2 years ago
Normally I would mock OCD relentlessly, but when it's guys using high explosives I WANT them to obsess like that! Very cool
calaan 2 years ago
This video was promted by ".50 BMG Bullet vs 18 Hard Drives." I'd like to post a link but YouTube apparently doesn't allow that in comments.
kirkbocek 2 years ago