Lazy Dog (bomb)

A Lazy Dog (sometimes called a Red Dot Bomb or Yellow Dog Bomb) is a small, unguided kinetic projectile measuring 1.75 inches (44 mm) in length, 0.5 inches (13 mm) in diameter, and weighing 207 grains, or about 0.47 ounces (13 g).

The weapons were designed to be dispersed over the battlefield with Mark 44 cluster adapters. Lazy dog projectiles were technically not bombs because they used no explosive, but were in many ways equally destructive. Mark 44 cluster adapters were one of many possible means to deliver "Lazy Dog" projectiles.

Lazy dog projectiles were used primarily during World War II, the Korean War, and the Vietnam War.

Lazy dog bombs were descended from projectiles of almost identical design and appearance that were originally developed early in World War II (as early as 1941). The Korean War-era and Vietnam War-era "Lazy Dog" was further developed, tested and deployed into the 1950s and 1960s.

Originally an Armament Laboratory program codenamed Lazy Dog, the weapon's development involved Delco Products Corporation, F&F Mold and Die Works, Inc., Haines Designed Products, and Master Vibrator Company of Dayton. The project objective was to design and test free-fall missiles and their dispensing units for use in bombers and fighters. Lazy Dog anti-personnel missiles were designed to spray enemy troops with small projectiles with three times the force of standard air-burst bombs. The Armament Laboratory worked with the Flight Test Laboratory to conduct wind tunnel tests of a number of bomb shapes which design studies indicated to be the most efficient for stowage and release from high performance aircraft.

Experimental Lazy Dog projectiles of various shapes and sizes were tested at Air Proving Ground, Eglin AFB, Florida, in late 1951 and early 1952. An F-84 flying at 400 knots and 75 feet (23 m) above the ground served as the test bed while a jeep and a B-24 were the targets. The result was eight hits per square yard. Tests revealed Shapes 2 and 5 to be the most effective. Shape 5, an improved basic Lazy Dog slug, had the force of a .50 caliber bullet and could penetrate 24 inches (61 cm) of packed sand. Shape 2 could penetrate 12 inches (30 cm) of sand — twice as much as a .45 caliber slug fired point blank.

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