US Bomb, 56 lb Practice, Mk 89 Mod 0,1
These are signal-generating practice bombs that function on impact, producing a flash and/or a puff of smoke.
Practice bomb Mk 89 Mod 0 is a low drag (subcaliber) practice bomb, similar in shape to the low-drag series of general purpose service bombs. The cast iron body is slender with a long, pointed nose. The conical fin assembly is of welded sheet metal or cast aluminum-magnesium construction. The tail fins are canted 2 degrees to impart spin to the bomb for the purpose of obtaining repeated consistent, trajectories. Practice bomb signal Mk 4 Mod 3 is installed in the forward end of the bomb.
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