The Russian-Ukrainian war started, and the local area became the best testing ground for the new generation of weapons in various countries. In the recent war, Russia used the code-named “Dagger” hypersonic missile to attack Ukraine for the first time. This is said to be more than 5 times faster than the speed of sound, and can attack any target in the world within 1 hour. At present, there is no new weapon that can be intercepted by any equipment. The focus of the world’s attention.
According to foreign media reports, hypersonic missiles are flying at a speed of more than 6,174 kilometers per hour (about 3,836 miles), which is five times the speed of sound. Under high-speed flight, it means that the enemy only has a short-term response or even interception after discovering that the missile is attacking. Although conventional intercontinental ballistic missile (ICBM) warheads fly at more than 5 times the speed of sound during the quasi-attack phase of re-entry into the atmosphere, it is difficult to change course and does not have much maneuverability.
Unlike ICBMs, the new hypersonic missiles still have the possibility to change their course after launch. They have higher flexibility and flexibility, are not intercepted by the enemy, and have better survivability. At present, hypersonic missile structures are roughly divided into two types. The first is a hypersonic gliding vehicle (HGV). After launching into space, it re-enters the atmosphere in a mode similar to a traditional intercontinental ballistic missile, and then uses the gliding vehicle to construct random flight and deceive. The enemy air defense radar gradually approaches the target and finally attacks. Another architecture is the hypersonic cruise missile (HCM), which, although not as fast as the HGV, can still fly at hypersonic speed, and fly at a low altitude with traditional cruise missiles, making it impossible for the enemy to detect and intercept, and have almost no time to react.
No matter what kind of structure, it is a huge challenge for R&D personnel. One is to fly at such a high speed, and the heat generation by friction with the air is the key. Frictional heating temperatures can surge to 2,200°C (3,990°F) in an instant. The titanium metal of classic supersonic aircraft such as the SR-71 strategic reconnaissance aircraft and the MiG 25 fighter-interceptor melts at 1,670°C (3,040°F), and to create a hypersonic missile shell, materials and processes have to be taken to a new level.
On the other hand, the communication guidance of expensive missiles is also the key. When the missile is flying, the high temperature will form a “plasma” of supercharged particles around the missile body, which is difficult for ordinary radio signals to penetrate. Similar problems will also be encountered when space shuttles or manned rockets re-enter the atmosphere. Contact the ground contact center Communication is often interrupted. How hypersonic missile-guided communication overcomes obstacles will test the wisdom of R&D personnel.
Even if the research and development is very difficult, countries are still competing to invest. Because the ultra-high flight speed of hypersonic missiles puts great pressure on the air defense system, the air defense networks of all countries have been broken, and the air defense model must be rethought. While giving the side with the hypersonic missile an advantage, it also gives the country with the advantage a chance to win the war.