How many seconds after pulling the pin does a grenade explode?

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asked Oct 2 in Polls/Surveys by Zitellio (970 points)
How many seconds after pulling the pin does a grenade explode?

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answered Oct 2 by Dalepointer (1,860 points)
A grenade does not explode simply by pulling the pin.

A grenade only explodes once the trigger is depressed which happens when it's launched and hits the ground.

Grenades usually explode within a few seconds after it hits the ground or an object and the trigger is tripped.

The pin on a grenade is simply a safety pin to prevent the grenade from exploding while handling it.

So you can pull the pin of a grenade and it won't explode until you actually throw it or trip the trigger lever.

The outer shell of the grenade, made of serrated cast iron, holds a chemical fuze mechanism, which is surrounded by a reservoir of explosive material.

The grenade has a filling hole for pouring in the explosive material.

The proper way to throw a hand grenade: Depress the striker lever, pull the pin, hurl the grenade.

The firing mechanism is triggered by a spring-loaded striker inside the grenade.

Normally, the striker is held in place by the striker lever on top of the grenade, which is held in place by the safety pin.

The soldier grips the grenade so the striker lever is pushed up against the body, pulls out the pin and then tosses the grenade.

Here's what happens inside once the grenade is released:

With the pin removed, there is nothing holding the lever in position, which means there is nothing holding the spring-loaded striker up.

The spring throws the striker down against the percussion cap. The impact ignites the cap, creating a small spark.

The spark then ignites a slow-burning material in the fuze.

In about four seconds, the delay material burns all the way through.

The end of the delay element is connected to the detonator, a capsule filled with more combustible material.

The burning material at the end of the delay ignites the material in the detonator, setting off an explosion inside the grenade.

The explosion ignites the explosive material around the sides of the grenade, creating a much larger explosion that blows the grenade apart.

Pieces of metal from the outer casing fly outward at great speed, imbedding in anybody and anything within range.

This sort of grenade may contain additional serrated wire or metal pellets for increased fragmentation damage.

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