Practical Aeronautics’ Post

The business end of the A-10 “Warthog” (officially called the Thunderbolt II) close air support aircraft is the GAU-8/A Avenger gun. Its development started in 1970 with an Air Force call for a new cannon to be used in the upcoming A-X close support aircraft competition, flight testing in the A-10 started in 1974, and the gun entered service in 1977. The 7-barrel Gatling gun is mounted slightly left of center so the 7-o’clock position gun barrel can be fired on the centerline. It fires 30-mm high explosive incendiary and armor piercing incendiary rounds weighing a little less than a pound, including those with depleted uranium cores for extra penetrating power. The GAU-8/A is powered by the A-10’s hydraulic system and can fire at 3,900 rounds per minute, which means the approximately 1,150-round magazine can fire for about 18 seconds. The A-10 is essentially built around the 4,000 pound+ system. Spent rounds are returned to the ammunition drum to keep the A-10’s center of gravity within limits. Early tests resulted in the A-10’s engines flaming out due to gas ingestion, so when the gun fires, the A-10’s igniters operate automatically to keep the TF-34 turbofan engines running. #aircraftsystems          #aerialcannons             #warthogs             #hydraulics      #turbofan         #cas https://lnkd.in/eFA858YT https://lnkd.in/eHbjH--2

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