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81 mm illuminating bomb M301 series
Region
United States
Category
Ammunition, Missiles and precision weapons
Armament US M29 , M29A1 and other medium-pressure 81 mm mortars. Development By the US Ordnance Department after Brandt originals. The M301A1 and M301A2 are out of production and are no longer held in US stockpiles. However, they may still be encountered in other countries. Description The M301A1 and M301A2 use the same cylindrical body, tailcone and fin assembly as the M57 smoke bomb described previously, but has no ogive. Instead, the end of the tubular section is closed by an adaptor into which the fuze is
screwed, inside is an expelling charge. A propulsion cartridge fits into the tailboom and up to four incremental charges are attached to the tailboom ahead of the fins. Only three operating charges are used; P + 2, P + 3 and P + 4; firing with less than two or more than four increments is forbidden. The interior of the bomb contains a parachute and flare assembly. The tailcone is attached to the tubular body by shear pins. When the fuze functions, it ignites the expelling charge and lights the flare composition. The pressure generated by the expelling charge shears the connecting pins and forces off the tailcone, allowing the parachute and flare to be ejected. The M301A1 differs from the M301A2 in that it has gas-check bourrelet grooves and some minor differences in metal parts dimensions. Manufacturer US government contractors.