The DEFA cannon (Direction des Études et Fabrications d'Armement) is a family of widely used French-made aircraft revolver cannon firing 30 mm caliber NATO standard rounds. The initial DEFA 551 was developed in the late 1940s. It is based on the German Mauser MG 213 C, an experimental revolver cannon developed for the Luftwaffe.

The DEFA cannon (Direction des Études et Fabrications d'Armement) is a family of widely used French-made aircraft revolver cannons firing the standard 30 mm caliber NATO rounds. The initial DEFA 551 was developed in the late 1940s. It was based on the German Mauser MG 213C, an …

30mm德发（DEFA）航空机炮是在第二次世界大战结束后，由法国原军械研制局、现法国武器工业集团，在缴获的法西期德国1944年设计的“毛塞”MG-213C转膛炮基础上研制的。

DEFA 30 M 550 F2A (Alternative designation for DEFA 552A, this convention also applies to other models. The DEFA 550 is an early Cold War series of autocannon of French origin. These autocannon are intended for aircraft use. The design is based on a late World War 2 Nazi German prototype captured by Allied forces.

转膛导气式航炮，是20世纪50~60年代较先进的航炮。 装备 法国 、 以色列 等10多个国家的“幻影”II、“幻影”III和“美洲虎”等战斗机。 该炮由身管、炮箱、滑板组件。 供弹机、电发火机构和火药弹装弹机组成。 全炮可安装在机身内，也可用吊舱外挂 [3-4]。 1971年研制成“德发”553式航炮，1979年又改进成“德发”554式航炮。 [5] 转膛导气式航炮，是20世纪50~60年代较先进的航炮。 装备法国、以色列等10多个国家的“幻影”II、“幻影”III和“美洲虎”等战斗机。

The GIAT DEFA 553 is a 30mm gas-operated five-chamber revolver cannon using pyrotechnic cocking and electrical ignition. It was developed from the DEFA 552 in 1957. Compared to the DEFA 552, the new version provided a new feed system, nitro-chrome steel barrel, forged drum casing, improved electrical reliability, a decrease in muzzle pressure ...

M230机炮家族都使用30×113mmB弹药（DEFA 550机炮也使用此种弹药），该机炮于1975年开始量产，并最终装备于AH-64阿帕奇武装直升机和MH-60L等直升机。 M230理论射速可达625±25发/分，实际射速约为300发/分，而阿帕奇可以携带1200发30×113mmB弹药。

The DEFA cannon (Direction des Études et Fabrications d'Armement) is a family of widely used French-made aircraft revolver cannons firing the standard 30 mm caliber NATO rounds. The initial DEFA 551 was developed in the late 1940s. It was based on the German Mauser MG 213C, an experimental revolver cannon developed for the Luftwaffe.

30mm德发（DEFA）航空机炮是在第二次世界大战结束后，由法国原军械研制局、现法国武器工业集团，在缴获的法西期德国1944年设计的“毛塞”MG-213C转膛炮基础上研制的。

30mm德发（DEFA）航空机炮是在第二次世界大战结束后，由法国原军械研制局、现法国武器工业集团，在缴获的法西期德国1944年设计的“毛塞”MG-213C转膛炮基础上研制的。