“锆石”（Zircon，俄语：Циркон）是俄罗斯研发的一种高超音速反舰巡航导弹，近年来因其极高的飞行速度和突防能力备受关注。关于其具体速度，俄官方曾多次宣称“锆石”导弹的飞行速度可达9马赫（即9倍音速，约每小时11,000公里）。然而，部分西方军事分析人士对此持保留态度，认为实际作战条件下可能略低于该数值，估计在5至8马赫之间。即便如此，“锆石”仍属于典型的高超音速武器（通常指5马赫以上），远超传统反舰导弹的速度（一般为0.8–2马赫）。其高速度结合低空飞行能力，使现有防空系统极难拦截。此外，“锆石”可由水面舰艇、潜艇甚至战略轰炸机发射，具备多平台部署优势。目前，该导弹已进入俄军服役，并部署于部分护卫舰和核潜艇上，被视为俄罗斯应对美国航母战斗群的重要非对称打击手段。
The ‘Zircon’ (Russian: Циркон) is a hypersonic anti-ship cruise missile developed by Russia, drawing significant attention in recent years for its extreme speed and penetration capabilities. Russian officials have repeatedly claimed that the Zircon can reach speeds of up to Mach 9 (approximately 11,000 km/h or 6,800 mph). However, some Western defense analysts remain skeptical, suggesting that real-world operational speeds may be slightly lower—likely between Mach 5 and Mach 8. Even at the lower end, this still firmly classifies Zircon as a hypersonic weapon (typically defined as exceeding Mach 5), far outpacing conventional anti-ship missiles, which usually travel at Mach 0.8 to Mach 2. Combined with its ability to fly at low altitudes, Zircon’s high velocity makes it extremely difficult for existing air defense systems to intercept. The missile can be launched from surface ships, submarines, and potentially strategic bombers, offering multi-platform deployment flexibility. It has already entered service with the Russian military and is reportedly deployed on select frigates and nuclear-powered submarines, serving as a key asymmetric countermeasure against U.S. aircraft carrier strike groups.
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