Laydown delivery

[1] Laydown delivery requires the weapon to be reinforced so that it can survive the force of impact.

[2] Laydown modes are used to make weapon delivery survivable by aircraft flying at low level.

[4] The ground burst detonation of a laydown delivered weapon is used to increase the effect of the weapon's blast on built-up targets such as submarine pens, or to transmit a shock wave through the ground to attack deeply-buried targets.

The issue of aircraft survivability led to laydown being selected for the Vickers Valiant bomber of the Royal Air Force, as the design became increasingly vulnerable to Soviet weapons, especially the SA-2 missile.

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