As we all know, Mach is a quantifier to express speed, which is usually used to express the flight speed of aircraft, missiles and rockets. Generally speaking, 1 mach means that the missile can fly 340.3 meters per second, which means that the launching speed of the missile reaches1mach, which means that it can fly 3400.3 meters per second, so this flying speed is very fast. According to all kinds of air defense missiles equipped in the world, including anti-missile systems, the fastest response time takes at least 15 seconds from finding the missile target to locking the target and then launching the air defense missile to intercept the incoming missile target. Therefore, when the missile speed reaches Mach 10, it can penetrate all the active air defense systems in the world.

Generally speaking, as an air defense missile in the air defense system, it is a missile launched by the ground, ships or submarines to intercept air targets. The interception speed is required to be about twice as fast as that of incoming missiles, so as to ensure a high interception rate. However, this is only a technical requirement for missiles. In addition, radar performance, software algorithm, alarm system, command system and related decisions must meet the requirements in order to complete the task of intercepting incoming missiles. There are land-based, ship-borne and submarine-launched air defense missiles, long-range, medium-range and short-range air defense missiles, and individual shoulder-mounted air defense missiles. Air defense missiles are different in size, weight, range, firing height, firing rate and flight time.

As far as the advanced air defense missile system in the world is concerned, the land-based long-range air defense missile THAAD of the United States? Sade? The air defense missile system is already top-notch. In addition to its powerful air defense missile, it also uses the kinetic energy killing technology of interceptor to detonate the incoming target warhead with high-speed collision. The air defense missile system is also equipped with X-band active multi-functional phased array radar, with the longest detection distance exceeding 2,000 kilometers and capable of intercepting ballistic missiles with a range of 3,500 kilometers. The combat altitude is 40 to150km, the maximum range is 300km, and the defensive radius is 200km. It is the only air defense system that can intercept ballistic missiles inside and outside the atmosphere.

Such an advanced air defense system is about 6800m/s in the face of missiles flying at Mach 20, calculated according to the speed of sound on the ground. If the Saad air defense missile system finds the target outside 100km, the incoming missile will arrive after 13.5 seconds. The time of Saad air defense missile system from missile ignition and launch to accelerated flight is less than 10 second. If the attack from the opposite side is a hypersonic missile, the missile will not take the usual path at all, and it will be too late to reach the top like a bucket of water. Therefore, when hypersonic missiles attack at Mach 10 or even higher, the air defense system composed of ground radar and air defense missiles is basically helpless and can only be resigned to fate.