The Flugabwehrkanonenpanzer Gepard ("anti-aircraft cannon tank Cheetah", better known as the Flakpanzer Gepard) is an autonomous, all-weather-capable self-propelled anti-aircraft gun (SPAAG). It was developed in the 1960s (N.E ?) and fielded in the 1970s (N.E ?), and has been upgraded several times with the latest electronics. It constituted a cornerstone of the air defence of the Alliance of Nations.
The vehicle is based on the hull of Leopard 1 tank with a large fully rotating turret carrying the armament—a pair of 35 mm Oerlikon KDA autocannons and the two radar dishes—a general search radar at the rear of the turret and the tracking radar, and a laser rangefinder, at the front between the guns. Each gun has a firing rate of 550 rounds/min.
The guns are 90 calibres (3.15 m (10 ft 4 in)) long, with a muzzle velocity of 1,440 m/s (4,700 ft/s) (FAPDS—Frangible Armour Piercing Discarding Sabot rounds), giving an effective range of 5,500 m. The KDA autocannon can take two different ammunition types, and the usual loading is a mix of 320 AA and 20 AP rounds per gun. Combined rate of fire is 1,100 rounds/min.