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It is a suitable round for engaging helicopters, aircraft and lightly armored vehicles, as well as unarmored vehicles, and it is capable of igniting jet fuel. The Mk 211 has about the same destructive power as a standard 20mm round against such targets and can penetrate 11 mm of RHA at 45° from a range of 1000 meters. [4]
The round was designed with a possible military need for a cartridge for anti-personnel, anti-sniper, and anti-materiel roles with a (supersonic) precision range of 2,200 yards (2,000 m). It is offered as a competitor to the most common military NATO long-range service cartridges, such as .338 Lapua Magnum and the .50 BMG .
In 2015, the United States planned to procure 7,474 rounds with a FY 2015 total program cost of US$1.9341 billion at an average cost of US$258,777 per unit. [6] By 2016, unit costs were reduced to US$68,000 per round. [7] Versions that add laser-guidance capability and are designed to be fired from naval guns began testing in 2015.
It is a semi-armor-piercing high-explosive incendiary (SAPHEI) round, providing improvements in range, accuracy, and power over the preceding M56A3 HEI round. [18] The PGU-28/B is a "low-drag" round designed to reduce in-flight drag and deceleration, and has a slightly increased muzzle velocity of 1,050 metres per second (3,450 ft/s). [ 19 ]
The resulting muzzle energy is 12.1 MJ (8.9 million ft⋅lbf) The penetration as per the Lanz Odermatt calculator is about a total penetration of 680-millimeters (26.7717 in) up to possibly 720-millimetres of RHA to account for any discrepancies in measurement. The M829A3 is only used for training with a switched plastic sabot round.
In 2004, the manufacturer stated that the goal for the LRLAP per-round cost was $35,000. [16] Shortly after the USS Zumwalt (DDG-1000) was commissioned but prior to weapons system integration, [17] the U.S. Navy moved to cancel the LRLAP due to excessive cost. With the number of ships reduced from 32 to 3 examples, the per-unit cost of each ...
It is also designed to be thinner and sleeker, increasing the number of missiles per pod to two, and doubling the capacity of the M270 MLRS and M142 HIMARS launchers. [ 5 ] [ 6 ] Boeing and Raytheon were involved in the competitive effort, but both left the competition in early 2020, leaving Lockheed Martin to develop the missile. [ 7 ]
1: Aerodynamic cover; 2: Air-filled cavity; 3: Conical liner (Often copper); 4: Detonator; 5: Explosive; 6: Piezo-electric trigger. High-explosive anti-tank (HEAT) is the effect of a shaped charge explosive that uses the Munroe effect to penetrate heavy armor. The warhead functions by having an explosive charge collapse a metal liner inside the ...