![]() The nose fuze hole is usually closed with an armour-piercing plug. SAP bombs typically are thickly walled and will utilize only a tail fuze.Unlike a general-purpose or demolition bomb, AP bombs don't rely on the explosive power of the blast to damage the exterior of a structure, but instead, utilize the terminal velocity and weight of the bomb to punch through a hardened structure where then a fragmenting explosion will be able to damage lesser or unprotected assets. Approximately 30% of the bomb is explosive filler. The purpose of these bombs is to penetrate armoured and hardened targets and then explode with fragments once inside of the hardened structure wreaking havoc with less hardened internal components (below decks on the ship, engine rooms, crew quarters, munition stores, and hardened bunkers performing the same role). AP bombs are thick-walled with a heavy steel nose and a tail fuze.Main explosive filler is detonated, exploding the entire bombĬlassification of bombs Armor-piercing bombs (AP).Chain reaction detonates a relay or booster.Depending on the type of bomb and the type of fuzes, the bomb may explode on contact with the ground or an object or may impact first and explode with a delayed explosion. Once the fuzes arms, the bomb is ready to detonate. If the bomb impacts with the ground or an object before the fuze has a chance to arm, it will not explode. ![]() As the bomb drops, the fuze propellers are free to spin and in doing so, arm the fuzes after a certain amount of time. During the initial release and drop, an arming wire assembly which is secured to the releasing mechanism will slip out from the bomb's fuzes (nose, tail or both if installed). Typically when a bomb is dropped with the intent of destroying a target, it is released from its carrying aircraft. When it comes to bombs, the explosive train is the series of events which take place from arming the bomb to its detonation sequence. The four main steps in the explosive train of a bomb. Safety device – one or two strands of arming wire attached to a swivel loop which prevents the arming of fuze until withdrawn.The spinning propeller will cause the fuze to arm itself in preparation for detonation at a target site depending on mission requirements. Arming-vane assembly – A small propeller device with sheet-metal blades attached to specific mechanical fuzes and activate after the bomb is released from the aircraft and the safety wire is pulled free.A bomb may have a fuze in the nose of the bomb, one in the tail or a fuze in both. Fuze – a mechanism which causes the main charge to explode.Retarding type: Can consist of streamers, parachutes or folded blades which open in an umbrella type fashion which induces high-drag, slowing the fall of the bomb.Conical or stream-lined: crafted cone-shaped body with metal blades joined directly to the body to create a low-drag or stream-lined configuration.Support struts are typically added to strengthen the fin box. Box type: Composed of a fin sleeve with sheet-metal blades joined to the fin sleeve, forming a box-like assembly.These can include box type, conical or stream-lined type or retarding type. ![]()
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