The Fairchild Republic A-10 Thunderbolt II 'Warthog' was designed around the GAU-8 Avenger, a heavy rotary cannon that forms the aircraft's primary armament. The heaviest rotary cannon ever mounted on an aircraft. The aircraft's hull incorporates over 1,200 pounds (540 kg) of armor and was designed with survivability as a priority, with protective measures in place which enable the aircraft to continue flying even after taking significant damage. (Wikipedia)
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