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Military folks and war experts - Bomb question
Posted on 8/6/16 at 10:37 pm
Posted on 8/6/16 at 10:37 pm
I have no military experience and so I ask the following question purely out of ignorance.
After watching Hurt Locker, I got curious as to what exactly kills someone when a bomb goes off. I'm not talking about a bomb going off inside a building where the building will eventually fall on you and kill you. But in a scenario where the bomb is out in the open like the opening scene in the movie.
One of the soldiers is seen running away from the bomb while in his bomb suit. The bomb goes off and you can see blood in his helmet.
I might be missing something here but the debris couldn't have possibly have hit him that hard from a range of about 10 meters.
So any military folks in here give me the simple explanation. Geauxtigers!
After watching Hurt Locker, I got curious as to what exactly kills someone when a bomb goes off. I'm not talking about a bomb going off inside a building where the building will eventually fall on you and kill you. But in a scenario where the bomb is out in the open like the opening scene in the movie.
One of the soldiers is seen running away from the bomb while in his bomb suit. The bomb goes off and you can see blood in his helmet.
I might be missing something here but the debris couldn't have possibly have hit him that hard from a range of about 10 meters.
So any military folks in here give me the simple explanation. Geauxtigers!
Posted on 8/6/16 at 10:39 pm to NoFlexZone
Pressure wave can kill you even if nothing hits you shrapnel wise, also generates a tremendous amount of flash heat
This post was edited on 8/6/16 at 10:40 pm
Posted on 8/6/16 at 10:40 pm to NoFlexZone
When an explosion occurs, there is a rapid release and expansion of gases. As these expand, they push on the surrounding air molecules. This causes compression of a layer of air which then expands outward in a hemispherical wave.
The compressed air layer is much denser than normal air. If a human being is close enough to the epicenter of the explosion, the wave will be dense enough, and traveling fast enough, that when it reaches them it cause serious physical damage -- like hitting a brick wall. The effect is similar to jumping off a tall bridge into the water below. The only difference is which thing is moving -- and all motion is relative.
The worst part about a shockwave is that it hits you all over, thereby causing trauma on your entire body simultaneously. This alone generates an overload of the nervous system that may be too much to recover from. If that wasn't bad enough, the impact travels in waves through your body, and if powerful enough, will pulverize bones, rupture blood vessels, and even liquefy organs as it passes. All that energy has to go somewhere, so it is absorbed by tissues and bone.
Because the wave expands spherically, theoretically its energy diminishes as the square of the distance from its source. (This is altered, however, by the immediate surroundings, including the ground, which may absorb or reflect some of the wave. Explosive charges can also be shaped, which will cause energy to be directed and focused rather than diffuse.) The energy received at 5 meters is 4 times that received at 10 meters so the degree of damage gets exponentially worse the closer you are to the explosion.
The compressed air layer is much denser than normal air. If a human being is close enough to the epicenter of the explosion, the wave will be dense enough, and traveling fast enough, that when it reaches them it cause serious physical damage -- like hitting a brick wall. The effect is similar to jumping off a tall bridge into the water below. The only difference is which thing is moving -- and all motion is relative.
The worst part about a shockwave is that it hits you all over, thereby causing trauma on your entire body simultaneously. This alone generates an overload of the nervous system that may be too much to recover from. If that wasn't bad enough, the impact travels in waves through your body, and if powerful enough, will pulverize bones, rupture blood vessels, and even liquefy organs as it passes. All that energy has to go somewhere, so it is absorbed by tissues and bone.
Because the wave expands spherically, theoretically its energy diminishes as the square of the distance from its source. (This is altered, however, by the immediate surroundings, including the ground, which may absorb or reflect some of the wave. Explosive charges can also be shaped, which will cause energy to be directed and focused rather than diffuse.) The energy received at 5 meters is 4 times that received at 10 meters so the degree of damage gets exponentially worse the closer you are to the explosion.
Posted on 8/6/16 at 10:41 pm to NoFlexZone
Depends on the type of ordnance. Grenades and Claymores kill with shrapnel usually. Large ones it is often by the concussion of the explosion.
Posted on 8/6/16 at 10:41 pm to NoFlexZone
First post said all this
Pressure, heat, shrapnel
Pressure, heat, shrapnel
Posted on 8/6/16 at 10:46 pm to USAF Hart
quote:So the suit that is built for soldiers to use while defusing bombs doesn't help much does it?
USAF Hart
At least how far would one have to be in order to be outside of danger?
Posted on 8/6/16 at 10:47 pm to NoFlexZone
All that energy has to go somewhere. If that doesnt kill you shrapnel can.
This post was edited on 8/6/16 at 10:49 pm
Posted on 8/6/16 at 10:53 pm to NoFlexZone
The suits do the best that they can. However, nothing is ever 100% protective. As far as distance goes, it really just depends on the ordinance in question.
Posted on 8/7/16 at 12:30 am to NoFlexZone
Just curious as to why you specified "military experts". Just seems like an odd distinction. Sure, there are ordinance experts in the military that would be experts at this. But your regular joe private probably wouldn't. Meanwhile, certain doctors, physicists, LEOs, and other would also be able to answer this question just as well.
Posted on 8/7/16 at 1:16 am to USAF Hart
quote:
When an explosion occurs, there is a rapid release and expansion of gases. As these expand, they push on the surrounding air molecules. This causes compression of a layer of air which then expands outward in a hemispherical wave. The compressed air layer is much denser than normal air. If a human being is close enough to the epicenter of the explosion, the wave will be dense enough, and traveling fast enough, that when it reaches them it cause serious physical damage -- like hitting a brick wall. The effect is similar to jumping off a tall bridge into the water below. The only difference is which thing is moving -- and all motion is relative. The worst part about a shockwave is that it hits you all over, thereby causing trauma on your entire body simultaneously. This alone generates an overload of the nervous system that may be too much to recover from. If that wasn't bad enough, the impact travels in waves through your body, and if powerful enough, will pulverize bones, rupture blood vessels, and even liquefy organs as it passes. All that energy has to go somewhere, so it is absorbed by tissues and bone. Because the wave expands spherically, theoretically its energy diminishes as the square of the distance from its source. (This is altered, however, by the immediate surroundings, including the ground, which may absorb or reflect some of the wave. Explosive charges can also be shaped, which will cause energy to be directed and focused rather than diffuse.) The energy received at 5 meters is 4 times that received at 10 meters so the degree of damage gets exponentially worse the closer you are to the explosion.
This
Well done sir. I did 12 yrs in the Army as 21B and your response would've been exactly the same as mine.
Posted on 8/7/16 at 1:18 am to NoFlexZone
USAF Hart must have stayed at a Holiday Inn last night.
Posted on 8/7/16 at 8:08 am to SG_Geaux
quote:That saying from the 80's never gets old.
USAF Hart must have stayed at a Holiday Inn last night.
Posted on 8/7/16 at 9:06 am to USAF Hart
quote:
USAF Hart
Ask and you shall receive.
The OT never ceases to amaze.
Posted on 8/7/16 at 9:46 am to Sid in Lakeshore
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