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据西德《士兵与技术》1979年第8期报道,法国为装备其空军的“幻影”2000型飞机而研制的“德发”554型新30毫米航炮,于1978年年底投入预批量生产。“德发”554型是“德发”553型的继续发展,除射速外,其余性能与553型无区别。554型的射速由1300发/分提高到1800发/分,在采用长点射打地面面积目标时,为了防止身管过度受热,射速又可降低到110发/分。554型的外型和动作过程也与“德发”553型相似。因此,维修保养是不成问题的,而且可同“德发”553型互换。为了使装配和分解容易,“德发554型配有防热层。
According to West Germany’s “Soldiers and Technology”, No. 8, 1979, France’s “Tak Fa” 554 new 30mm gun, developed for its Air Force Mirage 2000 aircraft, was put into pre-mass production at the end of 1978 . “Tak Fat” Model 554 is “Tak Fat” Model 553 continued development, in addition to the rate of fire, the remaining performance and 553 no difference. The rate of fire in the 554 increased from 1300 to 1800 rounds per minute. When using the long-range ground target, the rate of fire was reduced to 110 rounds per minute to prevent overheating of the tube. 554-type appearance and movement of the process and the “Tak Fa” 553-type similar. Therefore, maintenance is not a problem, but also with the “Tak Fa” 553 type swap. For easy assembly and disassembly, DE-554 is equipped with a thermal barrier.