MIM-46 Mauler

The General Dynamics MIM-46 Mauler was a self-propelled anti-aircraft missile system designed to a late 1950s US Army requirement for a system to combat low-flying high-performance tactical fighters and short-range ballistic missiles. Based on the M113 chassis, Mauler carried search and attack radars, fire control computers and nine missiles in a highly mobile platform. An ambitious design for its era, the Mauler ran into intractable problems during development, and was eventually canceled in November 1965.

Mauler's cancellation left the US Army with no modern anti-aircraft weapon, and they rushed development of the much simpler MIM-72 Chaparral and M163 VADS to fill this niche. These weapons were much less capable than Mauler, and were intended solely as a stop-gap solution until more capable vehicles were developed. In spite of this, no real replacement entered service until the late 1990s. Both the US Navy and British Army were also expecting Mauler to fulfil their own short-range needs and its cancellation left them with the same problem. They used RIM-7 Sea Sparrow and Rapier missile, respectively, to fill these needs.

The US Army's first custom-designed anti-aircraft weapon was the M42 Duster, mounting two Bofors 40 mm guns in an optically aimed turret on a M41 Walker Bulldog light tank chassis. First entering production in 1952, the Duster quickly became outdated as aircraft performance increased.

To replace the Duster, the Army started work on the Sperry Vigilante, which mounted a powerful 37 mm Gatling gun on top of a modified M113 Armored Personnel Carrier chassis. Although the Vigilante was, like the Duster, optically aimed and guided, its 3,000 rpm firing rate gave it much better performance against high-speed aircraft.

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