英国飞机公司研制的最新的防空导弹“长剑”,在英国陆军和皇家空军中开始服役。它是世界上这类导弹中第一个完全达到作战装备水平的导弹。本文简短地介绍一下它的起因,研制经过和系统的特性。历史背景直到目前,防空都是联合进行的,对较高的飞机用中-高空防空导弹攻击,而对低空的飞机则应用高炮攻击,但对于高速低空飞机, British aircraft company developed the latest anti-aircraft missile “Sword”, in the British Army and Royal Air Force in service. It is the first of the world’s missiles of this type to be fully operational and equipped. This article briefly introduces its causes, development and system features. Historical Background Up to now, air defenses are jointly carried out. Attacks on medium to high-altitude anti-aircraft missiles are carried out on higher aircraft while anti-aircraft artillery attacks on low-altitude aircraft. However, for high-speed low-altitude aircraft,