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Underwater explosion. An underwater charge explosion, conducted by the US Navy. An underwater explosion (also known as an UNDEX) is a chemical or nuclear explosion that occurs under the surface of a body of water. While useful in anti-ship and submarine warfare, underwater bombs are not as effective against coastal facilities.
Shock factor is a commonly used figure of merit for estimating the amount of shock experienced by a naval target from an underwater explosion as a function of explosive charge weight, slant range, and depression angle (between vessel and charge). [1] R is the slant range in feet. W is the equivalent TNT charge weight in pounds = charge weight ...
Implosion (mechanical process) In an explosion (top), force radiates away from a source. With implosion (bottom), the object collapses upon itself (generally being crushed by an outside force). Implosion is the collapse of an object into itself from a pressure differential or gravitational force. The opposite of explosion (which expands the ...
Underwater demolition has similar civilian and military applications. Piecemeal wrecking of a shipwreck, also called wrecking in place, is the dismantling of the whole or parts of a wreck in situ , usually when it is not possible or economically viable to salvage it, and it is a navigational hazard or must be removed for some other reason.
Underwater blast Blast fishing , fish bombing , dynamite fishing or grenade fishing is a destructive fishing practice using explosives to stun or kill schools of fish for easy collection. This often illegal practice is extremely destructive to the surrounding ecosystem , as the explosion often destroys the underlying habitat (such as coral ...
Emergency medicine, trauma surgery. A blast injury is a complex type of physical trauma resulting from direct or indirect exposure to an explosion. [1] Blast injuries occur with the detonation of high-order explosives as well as the deflagration of low order explosives. These injuries are compounded when the explosion occurs in a confined space.
The damage that an underwater explosion inflicts on a submarine comes from a primary and a secondary shock wave. The primary shock wave is the initial shock wave of the depth charge, and will cause damage to personnel and equipment inside the submarine if detonated close enough.
The dynamic design analysis method (DDAM) is a US Navy -developed analytical procedure for evaluating the design of equipment subject to dynamic loading caused by underwater explosions (UNDEX). The analysis uses a form of shock spectrum analysis that estimates the dynamic response of a component to shock loading caused by the sudden movement of ...