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TDA 81mm

Infantry Medium Mortar

The French Army TDA 81mm of the 1960s has been modernized into the LC, LL, and LLR type field systems.
Authored By: Staff Writer | Edited: 2/4/2019
National Flag Graphic


Year: 1961
Manufacturer(s): State Factories - France / South Africa
Roles: In-Direct Fire/Siege/Area Effect;
Action: Manual Operation
Caliber(s): 81mm
Sights: Integrated Optics Set.
Overall Length: 1,640 mm (64.57 in)
Barrel Length: 1,640 mm (64.57 in)
Weight (Unloaded): 99.65 lb (45.20 kg)
Rate-of-Fire: 16 rounds-per-minute
Effective Range: 10,170 ft (3,100 m; 3,390 yd)
Operators: France; South Africa
As with other military powers of the world during the Cold War period (1947-1991), the French Army moved to adopt a new light infantry-level field mortar in 81mm caliber, this becoming the "TDA 81mm". The series was taken into service in 1961 and has been progressively modernized throughout the subsequent decades (the LLR 81mm is its most modern form). The light infantry mortar fulfills the role of in-direct ranged fire support for infantry actions on the ground, capable of engaging foes without actually seeing them. The complete system encompasses the launch tube, optics set, baseplate and supporting bipod. Rate-of-fire reaches up to 20 rounds-per-minute and range is out to 3,400 yards from the point of launch. The typical operating crew numbers four personnel.

The TDA 81mm is cleared to fire High-Explosive, illumination, smoke and White Phosphorous (practice) projectiles. Total system weight is 43 kilograms with the launch tube being 14.4kg, the base plate weighing 14.9kg and the bipod weighing 12.2kg.

The French and South African armies both utilize the TDA 81mm series family of light mortars. In the latter it is designated as the M-3.

Variants / Models

• TDA 81mm - Base Series Designation; model of 1961.
• LC 81mm - Lightweight, short barrel variant
• LL 81mm - Long barrel variant
• LLR 81mm - Paratrooper model of 1997; long barrel variant with reinforcement applied for long term use.
• M-3 - South African Army Designation
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