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120 mm long-range HE projectile
Region
France
Category
Ammunition, Missiles and precision weapons
Armament 120 mm TDA rifled mortar MO-120-RT. Development Developed by TDA to provide an HE mortar bomb capable of a 17,000 m range. Description This projectile uses a long cylindrical body with a tapering ogive and a slight boat tail at the rear. In distinction to all other bombs for the 120 mm rifled mortar, it does not have a prerifled driving band, although it does carry a plastic obturating ring. Instead, there are six spring-out fins at the rear of the boat tail which, until the bomb is in flight, are locked
in the folded-in position by an attachment at the end of the cartridge container tube. The cartridge container carries the usual primary and 11 secondary increments. In addition, the centre of the bomb carries a rocket motor which has an exit venturi in the bomb's base. This is sealed by a plug which carries a pyrotechnic delay. On firing, the bomb is launched by the propelling charge in the usual way. On leaving the muzzle, the cartridge container is discarded allowing the fins to spring out into the airstream and stabilise the bomb's flight. The explosion of the charge ignites the delay, after a further period of time the rocket motor is ignited, while the bomb is still on the upward leg of the trajectory. The plug is blown out of the venturi, the rocket efflux takes effect and the trajectory is consequently extended. Manufacturer TDA .