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81 mm Illuminating bomb M77A
Region
France
Category
Ammunition, Missiles and precision weapons
Armament TDA and other 81 mm mortars, including British L16A1/A2. Development By TDA . Description The TDA M77A illuminating round was specifically developed for the company's 81 mm light mortar, but can be used in virtually any 81 mm mortar. The M77A projectile provides a light intensity of 1 Mcd, a rate of fall of 5 to 7 m/s and an operating time of 55 s. With a burst height of 340 m, initial illumination covers an area with a diameter of approximately 1,250 m, with 5 lux over an area of 780 m diameter and two
lux on the outer edges. As the flare approaches the end of its descent, the illuminated area increases to 1,400 m diameter having 5 lux over an area with a diameter of 870 m and 2 lux at the outer edges. An Infra-Red (IR) version is also available. Manufacturer TDA .