A hypersonic glide vehicle (HGV) is a type of warhead for ballistic missiles that can maneuver and glide at hypersonic speed. It is used in conjunction with ballistic missiles to significantly change their trajectories after launch. Conventional ballistic missiles follow a predictable ballistic trajectory and are vulnerable to interception by the latest anti-ballistic missile (ABM) systems. The in-flight maneuverability of HGVs makes them unpredictable, allowing them to effectively evade air defenses. [1] [2] [3] As of 2022 [update] , hypersonic glide vehicles are the subject of an arms race. [4]
In addition to a unified payload the Guangdong Aerodynamic Research Academy claims to be exploring fitting its GDF-600 concept with various submunitions including what it calls a patrol projectile. [6]
Boost-glide weapons are generally designed to avoid existing missile defense systems, either by continually maneuvering or by flying at lower altitudes to reduce warning time. This generally makes such weapons easier to intercept using defensive systems intended for lower-altitude "low-tier" targets. Flying at lower speeds than short-range ballistic missile warheads makes them easier to attack. [23] Those that approach with very low terminal attack profiles are even subject to attack by modern hypervelocity guns and railguns. [24]
Hypersonics, like the Avangard HGV, generally use scramjet engines to achieve hypersonic speeds. Scramjet engines function only when the glide vehicle reaches mach 4.5. These engines are disengaged as the HGV enters the terminal phase of its flight. Failure to deactivate the engines would cause a catastrophic build up of heat in the vehicle as the atmosphere becomes denser during reentry, prematurely destroying the vehicle. Therefore, the terminal phase of an HGV's re-entry is similar to that of a multiple independently targetable reentry vehicle. For instance, the Avangard would not hit its target while "zig-zagging" at Mach 27, but rather would impact at a velocity under Mach 4 and on a linear trajectory.[ citation needed ] The superior evasion capabilities that HGVs employ are largely limited to the upper atmospheric flight span. [25] [26] [27]
A cruise missile is an unmanned self-propelled guided vehicle that sustains flight through aerodynamic lift for most of its flight path and whose primary mission is to place an ordnance or special payload on a target. Cruise missiles are designed to deliver a large warhead over long distances with high precision. Modern cruise missiles are capable of traveling at high subsonic, supersonic, or hypersonic speeds, are self-navigating, and are able to fly on a non-ballistic, extremely low-altitude trajectory.
The Air-Sol Moyenne Portée or ASMP is a French nuclear-armed air-launched cruise missile manufactured by MBDA France. In French nuclear doctrine, it serves what is referred to as a "pre-strategic" deterrence role. It is intended to be the ultimate "warning shot" prior to the full-scale employment of the strategic nuclear weapons arming the Triomphant-class ballistic missile submarines. The missile's development was undertaken by Aérospatiale's missile systems division, whose assets are now part of MBDA.
The maneuverable reentry vehicle is a type of warhead for ballistic missiles that is capable of maneuvering and changing its trajectory.
The Dongfeng 21 (DF-21; NATO reporting name CSS-5 - Dong-Feng is a two-stage, solid-fuel, single-warhead medium-range ballistic missile developed by China's Changfeng Mechanics and Electronics Technology Academy. A part of the Dongfeng missile family, the DF-21's development started in the late 1960s, and it was completed around 1985–86, but not deployed until 1991. It was developed from the JL-1 submarine-launched missile, and is China's first solid-fuel land-based missile. The U.S. Department of Defense in 2008 estimated that China had 60-80 missiles and 60 launchers; approximately 10-11 missiles can be built annually.
Hypersonic flight is flight through the atmosphere below altitudes of about 90 km (56 mi) at speeds greater than Mach 5, a speed where dissociation of air begins to become significant and high heat loads exist. Speeds over Mach 25 have been achieved below the thermosphere as of 2020.
Conventional Prompt Strike (CPS), formerly called Prompt Global Strike (PGS), is a United States military effort to develop a system that can deliver a precision-guided conventional weapon strike anywhere in the world within one hour, in a similar manner to a nuclear ICBM. Such a weapon would allow the United States to respond far more swiftly to rapidly emerging threats than is possible with conventional forces. A CPS system could also be useful during a nuclear conflict, potentially replacing the use of nuclear weapons against up to 30% of targets. The CPS program encompasses numerous established and emerging technologies, including conventional surface-launched missiles and air- and submarine-launched hypersonic missiles.
An anti-ship ballistic missile (ASBM) is a military ballistic missile system designed to hit a warship at sea.
The Alpha Draco missile, also known as Weapons System 199D (WS-199D), was an experimental ballistic missile developed by McDonnell Aircraft in the late 1950s to investigate the aerodynamic physics of the boost-glide reentry trajectory. Three test flights were conducted in 1959, of which two were successful.
The DF-ZF is a hypersonic glide vehicle (HGV) developed by the People's Republic of China. It is launched by the DF-17 medium-range ballistic missile. The combined weapon system was likely operational by October 2019.
Non-ballistic atmospheric entry is a class of atmospheric entry trajectories that follow a non-ballistic trajectory by employing aerodynamic lift in the high upper atmosphere. It includes trajectories such as skip and glide.
The Hwasong-12 is a mobile intermediate-range ballistic missile developed by North Korea. The Hwasong-12 was first revealed to the international community in a military parade on 14 April 2017 celebrating the Day of the Sun which is the birth anniversary of North Korea's founding President, Kim Il Sung. North Korea tested Hwasong-12 on 30 January 2022.
The Avangard is a Russian hypersonic glide vehicle (HGV). It can be carried as a multiple independently targetable reentry vehicle (MIRV) payload of heavy intercontinental ballistic missiles (ICBMs), such as the UR-100UTTKh, R-36M2 and RS-28 Sarmat. It can deliver both nuclear and conventional payloads. The Avangard is reportedly capable of travelling at re-entry speeds.
The Dongfeng-17, is a Chinese solid-fuelled road-mobile medium-range ballistic missile designed to carry the DF-ZF hypersonic glide vehicle.
A hypersonic weapon is a weapon capable of travelling at hypersonic speed, defined as between 5 and 25 times the speed of sound.
The AGM-183 ARRW is a hypersonic air-to-ground ballistic missile planned for use by the United States Air Force. Developed by Lockheed Martin, the boost-glide vehicle is propelled to a maximum speed of more than Mach 5 by a rocket motor before gliding toward its target. The program was cancelled in March 2023 after multiple failed tests. The program, however, continued despite the cancellation and was announced to still be in development following additional, undisclosed testing. However in 2024 it was announced that in the fiscal year 2025 budget, no funding would be provided for procurement or further research and development.
The HGV-202F is an Indian hypersonic glide vehicle (HGV) being designed, developed, and manufactured by an Indian Defence and Space company HTNP Industries.
The Hwasong-8 is a North Korean missile claimed to be mounting a hypersonic glide vehicle, which was first tested on 14 September 2021. The first launch occurred in September, a month with a total of four missile launches. As it is supposedly a hypersonic missile, the higher speed would allow it to reach its target in shorter time and additional maneuverability would give it a better chance at defeating missile defenses. Japanese tracking data from a test launch suggest it is a hypersonic ballistic missile, as North Korea described it.
Fattah-1 is an Iranian medium-range ballistic missile developed by the Islamic Revolutionary Guard Corps and unveiled in June 2023. It is Iran's first hypersonic ballistic missile. According to Iran, its high maneuverability and speed helps it to evade missile defense systems. In November 2023, Iran unveiled a newer version of the missile, Fattah-2.
The Hwasong-16b (HS-16b) is a North Korean intermediate-range ballistic missile (IRBM).
The Long Range – Anti Ship Missile (LRAShM) is a member of the family of hypersonic missiles being developed by the Defence Research and Development Organisation (DRDO) for the Indian Armed Forces.
According to Iranian official media, Fattah-2 is a hypersonic glide vehicle (HGV). Compared to a ballistic warhead that travels in a more foreseeable arc, an HGV offers significantly greater mobility as it glides to its target after initial launch.
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: CS1 maint: multiple names: authors list (link)The downside is when the [HGV] warhead nears its target, it has less speed and altitude and is therefore more easily intercepted by low-tier interceptors, including potential rail guns.