Fact file: Cluster bombs - activation

	Introduction
	Activation
	Bomblets

The canister twists open releasing the bomblets

As the weapon falls the tail fins cause it to spin. The spin rate can be varied in six stages and up to 2,500 rpm.

The canister is set to open at one of 10 pre-set altitudes, from 300 to 3,000 ft.

This combination of height and spin determines the area over which the bomblets will be scattered when the weapon opens.

The 202 bomblets are yellow cylinders about the size of a drinks can - 8 ins long and 2.5 ins across (20 x 6 cms).

As they fall, they deploy inflatable tail pieces for stability and to make sure they descend nose down.