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An air-to-air missile (AAM) is a
missile A missile is an airborne ranged weapon capable of self-propelled flight aided usually by a propellant, jet engine or rocket motor. Historically, 'missile' referred to any projectile that is thrown, shot or propelled towards a target; this ...
fired from an
aircraft An aircraft ( aircraft) is a vehicle that is able to flight, fly by gaining support from the Atmosphere of Earth, air. It counters the force of gravity by using either Buoyancy, static lift or the Lift (force), dynamic lift of an airfoil, or, i ...
for the purpose of destroying another aircraft (including unmanned aircraft such as
cruise missile A cruise missile is an unmanned self-propelled guided missile that sustains flight through aerodynamic lift for most of its flight path. Cruise missiles are designed to deliver a large payload over long distances with high precision. Modern cru ...
s). AAMs are typically powered by one or more rocket motors, usually solid fueled but sometimes liquid fueled.
Ramjet A ramjet is a form of airbreathing jet engine that requires forward motion of the engine to provide air for combustion. Ramjets work most efficiently at supersonic speeds around and can operate up to . Ramjets can be particularly appropriat ...
engines, as used on the
Meteor A meteor, known colloquially as a shooting star, is a glowing streak of a small body (usually meteoroid) going through Earth's atmosphere, after being heated to incandescence by collisions with air molecules in the upper atmosphere, creating a ...
, are emerging as propulsion that will enable future medium- to long-range missiles to maintain higher average speed across their engagement envelope. Air-to-air missiles are broadly put in two groups. Those designed to engage opposing aircraft at ranges of around 30 km to 40 km maximum are known as short-range or "within visual range" missiles (SRAAMs or WVRAAMs) and are sometimes called "
dogfight A dogfight, or dog fight, is an air combat manoeuvring, aerial battle between fighter aircraft that is conducted at close range. Modern terminology for air-to-air combat is air combat manoeuvring (ACM), which refers to tactical situations requir ...
" missiles because they are designed to optimize their agility rather than range. Most use
infrared guidance Infrared homing is a passive weapon guidance system which uses the infrared (IR) light emission from a target to track and follow it seamlessly. Missiles which use infrared seeking are often referred to as "heat-seekers" since infrared is r ...
and are called heat-seeking missiles. In contrast, medium- or long-range missiles (MRAAMs or LRAAMs), which both fall under the category of beyond-visual-range missiles (BVRAAMs), tend to rely upon radar guidance, of which there are many forms. Some modern ones use
inertial guidance An inertial navigation system (INS; also inertial guidance system, inertial instrument) is a navigation device that uses motion sensors (accelerometers), rotation sensors ( gyroscopes) and a computer to continuously calculate by dead reckoning ...
and/or "mid-course updates" to get the missile close enough to use an active homing sensor. The concepts of air-to-air missiles and
surface-to-air missile A surface-to-air missile (SAM), also known as a ground-to-air missile (GTAM) or surface-to-air guided weapon (SAGW), is a missile designed to be launched from the ground or the sea to destroy aircraft or other missiles. It is one type of anti-ai ...
s are closely related, and in some cases versions of the same weapon may be used for both roles, such as the
ASRAAM The Advanced Short Range Air-to-Air Missile (ASRAAM), also known by its United States designation AIM-132, is an imaging infrared homing air-to-air missile, produced by MBDA UK, that is designed for close-range combat. It is in service in the ...
and Sea Ceptor.


History

Ruhrstahl X-4 in RAF Museum Cosford The air-to-air missile grew out of the unguided
air-to-air rocket An air-to-air rocket or air interception rocket is an unguided projectile fired from aircraft to engage other flying targets. They were used briefly in World War I to engage enemy observation balloons and in and after World War II to engage enem ...
s used during the
First World War World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
. Le Prieur rockets were sometimes attached to the struts of biplanes and fired electrically, usually against observation balloons, by such early pilots as
Albert Ball Albert Ball, (14 August 1896 – 7 May 1917) was a British fighter pilot during the First World War. At the time of his death he was the United Kingdom's leading flying ace, with 44 victories, and remained its fourth-highest scorer b ...
and A. M. Walters. Facing the Allied air superiority,
Germany in World War II Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...
invested limited effort into missile research, initially adapting the projectile of the unguided
21 cm Nebelwerfer 42 The 21 cm Nebelwerfer 42 (21 cm NbW 42) was a German multiple rocket launcher used in the Second World War. It served with units of the ''Nebeltruppen'', the German equivalent of the American '' Chemical Corps''. Just as the ''Chemical C ...
infantry barrage rocket system into the air-launched BR 21 anti-aircraft rocket in 1943; leading to the deployment of the R4M unguided rocket and the development of various guided missile prototypes such as the
Ruhrstahl X-4 The Ruhrstahl Ru 344 X-4 or Ruhrstahl-Kramer RK 344 was a Wire-guided missile, wire-guided air-to-air missile designed by Germany during World War II. The X-4 did not see operational service and thus was not proven in combat but inspired conside ...
. The
US Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
and
US Air Force The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...
began equipping guided missiles in 1956, deploying the USAF's
AIM-4 Falcon The Hughes AIM-4 Falcon was the first operational guided air-to-air missile of the United States Air Force. Development began in 1946; the weapon was first tested in 1949. The missile entered service with the USAF in 1956. Produced in both heat- ...
and the USN's
AIM-7 Sparrow The AIM-7 Sparrow (Air Intercept Missile) is an American medium-range semi-active radar homing air-to-air missile operated by the United States Air Force, United States Navy, United States Marine Corps, and various other air forces and navies. Sp ...
and
AIM-9 Sidewinder The AIM-9 Sidewinder is a short-range air-to-air missile. Entering service with the United States Navy in 1956 and the Air Force in 1964, the AIM-9 is one of the oldest, cheapest, and most successful air-to-air missiles. Its latest variants rema ...
. Post-war research led the
Royal Air Force The Royal Air Force (RAF) is the Air force, air and space force of the United Kingdom, British Overseas Territories and Crown Dependencies. It was formed towards the end of the World War I, First World War on 1 April 1918, on the merger of t ...
to introduce Fairey Fireflash into service in 1957 but their results were unsuccessful. The
Soviet Air Force The Soviet Air Forces (, VVS SSSR; literally "Military Air Forces of the Union of Soviet Socialist Republics"; initialism VVS, sometimes referred to as the "Red Air Force") were one of the air forces of the Soviet Union. The other was the Sovie ...
introduced its K-5 into service in 1957. The first-ever successful combat deployment and shoot-down of an adversary aircraft happened during the 1958 Kinmen (Quemoy) Crisis, when RoCAF F-86 Sabres shot down at least one Soviet-made
PLAAF The People's Liberation Army Air Force, also referred to as the Chinese Air Force () or the People's Air Force (), is the primary aerial warfare service of the People's Liberation Army. The PLAAF controls most of the PLA's air assets, includi ...
MiG-17 using U.S.-supplied AIM-9 Sidewinder AAMs; the PLAAF fortuitously recovered a largely-intact AIM-9 Sidewinder that hit and got lodged into one of their MiG-17s, but did not explode, and reportedly turned over to the Soviets for reverse-engineering into the K-13 AAM. As missile systems have continued to advance, modern air warfare consists almost entirely of missile firing. The use of beyond-visual-range combat became so pervasive in the US that early F-4 variants were armed only with missiles in the 1960s. High casualty rates during the
Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
caused the US to reintroduce
autocannon An autocannon, automatic cannon or machine cannon is a automatic firearm, fully automatic gun that is capable of rapid-firing large-caliber ( or more) armour-piercing, explosive or incendiary ammunition, incendiary shell (projectile), shells, ...
and traditional dogfighting tactics but the missile remains the primary weapon in air combat. In the
Falklands War The Falklands War () was a ten-week undeclared war between Argentina and the United Kingdom in 1982 over two British Overseas Territories, British dependent territories in the South Atlantic: the Falkland Islands and Falkland Islands Dependenci ...
British Harriers, using AIM-9L missiles were able to defeat faster Argentinian opponents. Since the late 20th century
all-aspect An all-aspect air-to-air missile can track a target no matter which way the target faces relative to the missile. In other words, an all-aspect missile can be launched against a target not only in a tail-chase engagement, but also in a head-on eng ...
heat-seeking designs can lock-on to a target from various angles, not just from behind, where the heat signature from the engines is strongest. Other types rely on radar guidance (either on-board or "painted" by the launching aircraft).


Use of air-to-air missiles as surface-to-air missiles

In 1999 R-73 missile were adapted by Serb forces for surface to air missiles. The
Houthi movement The Houthis, officially known as Ansar Allah, is a Zaydism, Zaydi Shia Islamism, Shia Islamist political and military organization that emerged from Yemen in the 1990s. It is predominantly made up of Zaydi Shias, with their namesake leadersh ...
Missile Research and Development Centre and the Missile Force have tried to fire R-27/R-60/R-73/R-77 against Saudi aircraft using stockpiles of missiles from Yemeni Air Force stocks. The issue for the R-27 and R-77 is the lack of a radar to support their guidance to the target. However the R-73 and R-60 are infra-red heat seeking missiles. They only require power, liquid nitrogen "to cool the seeker head", and a pylon to launch the missile. These missiles have been paired with a "US made FLIR Systems ULTRA 8500 turrets". Only one near miss has been verified and that was a R-27T fired at
Royal Saudi Air Force The Royal Saudi Air Force (RSAF; ) is the military aviation, aviation branch of the Armed Forces of Saudi Arabia, Saudi Arabian Armed Forces. The Royal Saudi Air Force currently has wings, squadrons, and a special forces unit dedicated to comba ...
F-15SA. However the drawback is that these missiles are intended to be fired from one jet fighter against another. So the motors and fuel load are smaller than a purpose built surface to air missile. On the Western side, the Norwegian-American made NASAMS air defense system has been developed for using
AIM-9 Sidewinder The AIM-9 Sidewinder is a short-range air-to-air missile. Entering service with the United States Navy in 1956 and the Air Force in 1964, the AIM-9 is one of the oldest, cheapest, and most successful air-to-air missiles. Its latest variants rema ...
,
IRIS-T The IRIS-T (infrared imaging system tail/thrust vector-controlled) is a family of short range infrared homing air-to-air missile, air-to-air and short to medium range surface-to-air missile, surface-to-air missiles. It is also called AIM-2000. ...
and AMRAAM air-to-air missiles to intercept targets. None of these missiles require modifications and hence it is possible for the system to take missiles straight from an aircraft. After a live-fire test occurred in September 2020 off the coasts of Florida, during which it successfully engaged a simulated cruise missile, in 2022 NASAMS was deployed to Ukraine, where for the first time this missile system was used in real combat conditions, and, according to Ukrainian government, was able to shoot down more than 100 aerial targets.


Warhead

A conventional explosive blast warhead, fragmentation warhead, or continuous rod warhead (or a combination of any of those three warhead types) is typically used in the attempt to disable or destroy the target aircraft. Warheads are typically detonated by a
proximity fuze A Proximity Fuse (also VT fuse or "variable time fuze") is a fuse that detonates an explosive device automatically when it approaches within a certain distance of its target. Proximity fuses are designed for elusive military targets such as air ...
or by an impact fuze if it scores a direct hit. Less commonly, nuclear warheads have been mounted on a small number of air-to-air missile types (such as the AIM-26 Falcon) although these have never been used in combat.


Guidance

Guided missiles operate by detecting their target (usually by either
radar Radar is a system that uses radio waves to determine the distance ('' ranging''), direction ( azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track ...
or
infrared Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves. The infrared spectral band begins with the waves that are just longer than those ...
methods, although rarely others such as
laser guidance Laser guidance directs a robotics system to a target position by means of a laser beam. The laser guidance of a robot is accomplished by projecting a laser light, image processing and communication to improve the accuracy of guidance. The key ide ...
or optical tracking), and then "homing" in on the target on a collision course. Although the missile may use radar or infra-red guidance to home on the target, the launching aircraft may detect and track the target before launch by other means. Infra-red guided missiles can be "slaved" to an attack radar in order to find the target and radar-guided missiles can be launched at targets detected visually or via an infra-red search and track (IRST) system, although they may require the attack radar to illuminate the target during part or all of the missile interception itself.


Radar guidance

Radar guidance is normally used for medium- or long-range missiles, where the infra-red signature of the target would be too faint for an infra-red detector to track. There are three major types of radar-guided missile – active, semi-active, and passive. Radar-guided missiles can be countered by rapid maneuvering (which may result in them "breaking lock", or may cause them to overshoot), deploying
chaff Chaff (; ) is dry, scale-like plant material such as the protective seed casings of cereal grains, the scale-like parts of flowers, or finely chopped straw. Chaff cannot be digested by humans, but it may be fed to livestock, ploughed into soil ...
or using electronic counter-measures.


Active radar homing

Active radar (AR)-guided missiles carry their own radar system to detect and track their target. However, the size of the radar antenna is limited by the small diameter of missiles, limiting its range which typically means such missiles are launched at a predicted future location of the target, often relying on separate guidance systems such as
Global Positioning System The Global Positioning System (GPS) is a satellite-based hyperbolic navigation system owned by the United States Space Force and operated by Mission Delta 31. It is one of the global navigation satellite systems (GNSS) that provide ge ...
,
inertial guidance An inertial navigation system (INS; also inertial guidance system, inertial instrument) is a navigation device that uses motion sensors (accelerometers), rotation sensors ( gyroscopes) and a computer to continuously calculate by dead reckoning ...
, or a mid-course update from either the launching aircraft or other system that can communicate with the missile to get the missile close to the target. At a predetermined point (frequently based on time since launch or arrival near the predicted target location) the missile's radar system is activated (the missile is said to "go active"), and the missile then homes in on the target. If the range from the attacking aircraft to the target is within the range of the missile's radar system, the missile can "go active" immediately upon launch. The great advantage of an active radar homing system is that it enables a "
fire-and-forget Fire-and-forget is a type of missile guidance which does not require further external intervention after launch such as illumination of the target or wire guidance, and can hit its target without the launcher being in line-of-sight of the tar ...
" mode of attack, where the attacking aircraft is free to pursue other targets or escape the area after launching the missile.


Semi-active radar homing

Semi-active radar homing (SARH) guided missiles are simpler and more common. They function by detecting radar energy reflected from the target. The radar energy is emitted from the launching aircraft's own radar system. However, this means that the launch aircraft has to maintain a "lock" on the target (keep illuminating the target aircraft with its own radar) until the missile makes the interception. This limits the attacking aircraft's ability to maneuver, which may be necessary should threats to the attacking aircraft appear. An advantage of SARH-guided missiles is that they are homing on the reflected radar signal, so accuracy actually increases as the missile gets closer because the reflection comes from a "point source": the target. Against this, if there are multiple targets, each will be reflecting the same radar signal and the missile may become confused as to which target is its intended victim. The missile may well be unable to pick a specific target and fly through a formation without passing within lethal range of any specific aircraft. Newer missiles have logic circuits in their guidance systems to help prevent this problem. At the same time, jamming the
missile lock-on Lock-on is a feature of many radar systems that allow it to automatically follow a selected target. Lock-on was first designed for the AI Mk. IX radar in the UK, where it was known as lock-follow or auto-follow. Its first operational use was in t ...
is easier because the launching aircraft is further from the target than the missile, so the radar signal has to travel further and is greatly attenuated over the distance. This means that the missile may be jammed or "spoofed" by countermeasures whose signals grow stronger as the missile gets closer. One counter to this is a "home on jam" capability in the missile that allows it to home in on the jamming signal.


Beam riding

An early form of radar guidance was " beam-riding" (BR). In this method, the attacking aircraft directs a narrow beam of radar energy at the target. The air-to-air missile was launched into the beam, where sensors on the aft of the missile controlled the missile, keeping it within the beam. So long as the beam was kept on the target aircraft, the missile would ride the beam until making the interception. While conceptually simple, the move is hard because of the challenge of simultaneously keeping the beam solidly on the target (which could not be relied upon to cooperate by flying straight and level), continuing to fly one's own aircraft, and monitoring enemy countermeasures. An added complication was that the beam will spread out into a cone shape as the distance from the attacking aircraft increases. This will result in less accuracy for the missile because the beam may actually be larger than the target aircraft when the missile arrives. The missile could be securely within the beam but still not be close enough to destroy the target.


Infrared guidance

Infrared guided (IR) missiles home on the heat produced by an aircraft. Early infra-red detectors had poor sensitivity, so could only track the hot exhaust pipes of an aircraft. This meant an attacking aircraft had to maneuver to a position behind its target before it could fire an infra-red guided missile. This also limited the range of the missile as the infra-red signature soon become too small to detect with increasing distance and after launch the missile was playing "catch-up" with its target. Early infrared seekers were unusable in clouds or rain (which is still a limitation to some degree) and could be distracted by the sun, a reflection of the sun off of a cloud or ground object, or any other "hot" object within its view. More modern infra-red guided missiles can detect the heat of an aircraft's skin, warmed by the friction of airflow, in addition to the fainter heat signature of the engine when the aircraft is seen from the side or head-on. This, combined with greater maneuverability, gives them an "
all-aspect An all-aspect air-to-air missile can track a target no matter which way the target faces relative to the missile. In other words, an all-aspect missile can be launched against a target not only in a tail-chase engagement, but also in a head-on eng ...
" capability, and an attacking aircraft no longer had to be behind its target to fire. Although launching from behind the target increases the probability of a hit, the launching aircraft usually has to be closer to the target in such a
tail-chase engagement A tail-chase engagement (or rear-aspect engagement) is one where a surface-to-air missile system or jet aircraft engages another aircraft while the target aircraft is flying away from the attacker. This makes engagement with cannons or infrared h ...
. An aircraft can defend against infra-red missiles by dropping
flares A flare, also sometimes called a fusée, fusee, or bengala, bengalo in several European countries, is a type of pyrotechnic that produces a bright light or intense heat without an explosion. Flares are used for distress signaling, illuminatio ...
that are hotter than the aircraft, so the missile homes in on the brighter, hotter target. In turn, IR missiles may employ filters to enable it to ignore targets whose temperature is not within a specified range. Towed decoys which closely mimic engine heat and infra-red jammers can also be used. Some large aircraft and many combat helicopters make use of so-called "hot brick" infra-red jammers, typically mounted near the engines. Current research is developing laser devices which can spoof or destroy the guidance systems of infra-red guided missiles. See
Infrared countermeasure An infrared countermeasure (IRCM) is a device designed to protect aircraft from infrared homing ("heat seeking") missiles by confusing the missiles' infrared guidance system so that they miss their target (electronic countermeasure). Heat-see ...
. Start of the 21st century missiles such as the
ASRAAM The Advanced Short Range Air-to-Air Missile (ASRAAM), also known by its United States designation AIM-132, is an imaging infrared homing air-to-air missile, produced by MBDA UK, that is designed for close-range combat. It is in service in the ...
use an " imaging infrared" seeker which "sees" the target (much like a digital video camera), and can distinguish between an aircraft and a point heat source such as a flare. They also feature a very wide detection angle, so the attacking aircraft does not have to be pointing straight at the target for the missile to lock on. The pilot can use a
helmet mounted sight A helmet-mounted display (HMD) is a headworn device that uses displays and optics to project imagery and/or symbology to the eyes. It provides visual information to the user where head protection is required – most notably in military aircr ...
(HMS) and target another aircraft by looking at it, and then firing. This is called "off- boresight" launch. For example, the Russian Su-27 is equipped with an infra-red search and track (IRST) system with
laser rangefinder A laser rangefinder, also known as a laser telemeter or laser distance meter, is a rangefinder that uses a laser beam to determine the distance to an object. The most common form of laser rangefinder operates on the time of flight principle by ...
for its HMS-aimed missiles.


Electro-optical

A recent advancement in missile guidance is electro-optical imaging. The Israeli Python-5 has an electro-optical seeker that scans designated area for targets via optical imaging. Once a target is acquired, the missile will lock-on to it for the kill. Electro-optical seekers can be programmed to target vital area of an aircraft, such as the cockpit. Since it does not depend on the target aircraft's heat signature, it can be used against low-heat targets such as UAVs and
cruise missile A cruise missile is an unmanned self-propelled guided missile that sustains flight through aerodynamic lift for most of its flight path. Cruise missiles are designed to deliver a large payload over long distances with high precision. Modern cru ...
s. However, clouds can get in the way of electro-optical sensors.


Passive anti-radiation

Evolving missile guidance designs are converting the anti-radiation missile (ARM) design, pioneered during Vietnam and used to home in against emitting surface-to-air missile (SAM) sites, to an air intercept weapon. Current air-to-air passive anti-radiation missile development is thought to be a countermeasure to
airborne early warning and control An airborne early warning and control (AEW&C) system is an airborne radar early warning system designed to detect aircraft, ships, vehicles, missiles and other incoming projectiles at long ranges, as well as performing command and control of the ...
(AEW&C – also known as AEW or AWACS) aircraft which typically mount powerful search radars. Due to their dependence on target aircraft radar emissions, when used against fighter aircraft passive anti-radiation missiles are primarily limited to forward-aspect intercept geometry. For examples, see Vympel R-27 and Brazo. Another aspect of passive anti-radiation homing is the "home on jam" mode which, when installed, allows a radar-guided missile to home in on the jammer of the target aircraft if the primary seeker is jammed by the
electronic countermeasures An electronic countermeasure (ECM) is an electrical or electronic device designed to countermeasure, trick or deceive radar, sonar, or other detection systems, like infrared (IR) or lasers. It may be used both offensively and defensively to deny ...
of the target aircraft.


Design

Air-to-air missiles are typically long, thin cylinders in order to reduce their cross section and thus minimize drag at the high speeds at which they travel. Missiles are divided into five primary systems (moving forward to aft): seeker, guidance, warhead, motor, and control actuation. At the front is the seeker, either a radar system, radar homer, or infra-red detector. Behind that lies the avionics which control the missile. Typically after that, in the centre of the missile, is the warhead, usually several kilograms of high explosive surrounded by metal that fragments on detonation (or in some cases, pre-fragmented metal). The rear part of the missile contains the propulsion system, usually a rocket of some type and the control actuation system or CAS. Dual-thrust solid-fuel rockets are common, but some longer-range missiles use liquid-fuel motors that can "throttle" to extend their range and preserve fuel for energy-intensive final maneuvering. Some solid-fuelled missiles mimic this technique with a second rocket motor which burns during the terminal homing phase. There are missiles, such as the MBDA Meteor, that "breathe" air (using a
ramjet A ramjet is a form of airbreathing jet engine that requires forward motion of the engine to provide air for combustion. Ramjets work most efficiently at supersonic speeds around and can operate up to . Ramjets can be particularly appropriat ...
, similar to a jet engine) in order to extend their range. Modern missiles use "low-smoke" motors – early missiles produced thick smoke trails, which were easily seen by the crew of the target aircraft alerting them to the attack and helping them determine how to evade it. The CAS is typically an electro-mechanical, servo control actuation system, which takes input from the guidance system and manipulates the airfoils or fins at the rear of the missile that guide or steers the weapon to target. Nowadays, countries start developing hypersonic air-to-air missile using scramjet engines (such as R-37, or AIM-260 JATM), which not only increases efficiency for BVR battles, but it also makes survival chances of target aircraft drop to nearly zero.


Performance

A number of terms frequently crop up in discussions of air-to-air missile performance. ; Launch success zone: The Launch Success Zone is the range within which there is a high (defined) kill probability against a target that remains unaware of its engagement until the final moment. When alerted visually or by a warning system the target attempts a last-ditch-manoeuvre sequence. ; F-pole: A closely related term is the F-Pole. This is the slant range between the launch aircraft and target, at the time of interception. The greater the F-Pole, the greater the confidence that the launch aircraft will achieve air superiority with that missile. ; A-pole: This is the slant range between the launch aircraft and target at the time that the missile begins active guidance or acquires the target with the missile's active seeker. The greater the A-Pole means less time and possibly greater distance that the launch aircraft needs to support the missile guidance until missile seeker acquisition. ; No-escape zone: The no-escape zone is the zone within which there is a high (defined) kill probability against a target even if it has been alerted. This zone is defined as a conical shape with the tip at the missile launch. The cone's length and width are determined by the missile and seeker performance. A missile's speed, range and seeker sensitivity will mostly determine the length of this imaginary cone, while its agility (turn rate) and seeker complexity (speed of detection and ability to detect off axis targets) will determine the width of the cone.


Missile minimum range

A missile is subject to a minimum range, before which it cannot maneuver effectively. In order to maneuver sufficiently from a poor launch angle at short ranges to hit its target, some missiles use
thrust vectoring Thrust vectoring, also known as thrust vector control (TVC), is the ability of an aircraft, rocket or other vehicle to manipulate the direction of the thrust from its engine(s) or motor(s) to Aircraft flight control system, control the Spacecra ...
, which allow the missile to start turning "off the rail", before its motor has accelerated it up to high enough speeds for its small aerodynamic surfaces to be useful.


Short-range air-to-air missile

Short-range air-to-air missiles (SRAAMs), typically used in "
dogfight A dogfight, or dog fight, is an air combat manoeuvring, aerial battle between fighter aircraft that is conducted at close range. Modern terminology for air-to-air combat is air combat manoeuvring (ACM), which refers to tactical situations requir ...
ing" or close range air combat compare to the
beyond-visual-range missile A beyond-visual-range missile (BVR missile) or beyond-visual-range air-to-air missile (BVRAAM) is an air-to-air missile that is capable of engaging at ranges around or beyond. This range has been achieved using dual pulse rocket motors or b ...
s. Most of the short-range air-to-air missiles are infrared guided.


SRAAM missile evolution

Those missiles usually classified into five "generations" according to the historical technological advances. Most of these advances were in infrared seeker technology (later combined with
digital signal processing Digital signal processing (DSP) is the use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations. The digital signals processed in this manner are a ...
).


First generation

Early short-range missiles such as the early Sidewinders and K-13 (missile) (''AA-2 Atoll'') had infrared seekers with a narrow (30-degree) field of view and required the attacker to position himself behind the target ( rear aspect engagement). This meant that the target aircraft only had to perform a slight turn to move outside the missile seeker's field of view and cause the missile to lose track of the target ("break lock").


Second generation

The second-generation of short-range missiles utilized more effective seekers that were better cooled than its predecessors while being typically "uncaged"; resulting in improved sensitivity to heat signatures, an increase in field of view as well as allowing the possibility of leading a missile within its FOV for an increased probability of kill against a maneuvering target. In some cases, the improved sensitivity to heat signatures allows for a very limited side and even all-aspect tracking, as is the case with the Red Top missile. In conjunction with improved control surfaces and propulsion motors over the first generation of dogfight missiles, the technological advances of the second-generation short-range missiles allowed them to be used not just on non-maneuvering bombers, but also actively maneuvering fighters. Examples include advanced derivatives of the K-13 (missile) and AIM-9 such as K-13M (R-13M, Object 380) or AIM-9D / G / H.


Third generation

This generation introduced much more sensitive seekers that are capable of locking onto the warm heat irradiated by the skins of aircraft from the front or side aspects, as opposed to just the hotter engine nozzle(s) from rear-aspect, allowing for a true
all-aspect An all-aspect air-to-air missile can track a target no matter which way the target faces relative to the missile. In other words, an all-aspect missile can be launched against a target not only in a tail-chase engagement, but also in a head-on eng ...
capability. This significantly expanded potential attacking envelopes, allowing the attacker to fire at a target which was side-on or front-on to itself as opposed to just the rear. While the field-of-view was still restricted to a fairly narrow cone, the attack at least did not have to be behind the target. Also typical of the third generation of short-range missiles are further improved agility over the previous generation as well as their ability to radar-slave; which is acquiring tracking data from the launching aircraft's radar or IRST systems, allowing attackers to launch missiles without ever pointing the nose of the aircraft at an enemy prior to leading the missile. Examples of this generation of dogfight missiles include the R-60M or the Python-3.


Fourth generation

The R-73 (missile) (''AA-11 Archer'') entered service in 1985 and marked a new generation of dogfight missile. It had a wider field of view and could be cued onto a target using a
helmet mounted sight A helmet-mounted display (HMD) is a headworn device that uses displays and optics to project imagery and/or symbology to the eyes. It provides visual information to the user where head protection is required – most notably in military aircr ...
. This allowed it to be launched at targets that would otherwise not be seen by older generation missiles that generally stared forward while waiting to be launched. This capability, combined with a more powerful motor that allows the missile to maneuver against crossing targets and launch at greater ranges, gives the launching aircraft improved tactical freedom. Other members of the 4th generation use focal plane arrays to offer greatly improved scanning and countermeasures resistance (especially against flares). These missiles are also much more agile, some by employing
thrust vectoring Thrust vectoring, also known as thrust vector control (TVC), is the ability of an aircraft, rocket or other vehicle to manipulate the direction of the thrust from its engine(s) or motor(s) to Aircraft flight control system, control the Spacecra ...
(typically
gimballed thrust Gimbaled thrust is the system of thrust vectoring used in most rockets, including the Space Shuttle program, Space Shuttle, the Saturn V lunar rockets, and the Falcon 9. Operation In a gimbaled thrust system, the engine or just the exhaust nozz ...
).


Fifth generation

The latest generation of short-range missiles again defined by advances in seeker technologies, this time electro-optical imaging infrared (IIR) seekers that allow the missiles to "see" images rather than single "points" of infrared radiation (heat). The sensors combined with more powerful
digital signal processing Digital signal processing (DSP) is the use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations. The digital signals processed in this manner are a ...
provide the following benefits: * greater infrared counter countermeasures (IRCCM) ability, by being able to distinguish aircraft from
infrared countermeasures An infrared countermeasure (IRCM) is a device designed to protect aircraft from infrared homing ("heat seeking") missiles by confusing the missiles' infrared guidance system so that they miss their target (electronic countermeasure). Heat-see ...
(IRCM) such as flares. * greater sensitivity means greater range and ability to identify smaller low flying targets such as UAVs. * more detailed target image allows targeting of more vulnerable parts of aircraft instead of just homing in on the brightest infrared source (exhaust). Examples of fifth generation short-range missiles include: * R-73M ("AA-11 Archer") – Russia (1994–) *
ASRAAM The Advanced Short Range Air-to-Air Missile (ASRAAM), also known by its United States designation AIM-132, is an imaging infrared homing air-to-air missile, produced by MBDA UK, that is designed for close-range combat. It is in service in the ...
 – UK (1998–) * AIM-9X Sidewinder – US (2003–) * Python 5 – Israel (2003–) * AAM-5  – Japan (2004–) *
IRIS-T The IRIS-T (infrared imaging system tail/thrust vector-controlled) is a family of short range infrared homing air-to-air missile, air-to-air and short to medium range surface-to-air missile, surface-to-air missiles. It is also called AIM-2000. ...
 – Germany (2005–) * PL-10 – China (2015–) * R-74M2 ("AA-11 Archer") – Russia (2019–) *
A-Darter The V3E A-Darter (Agile Darter) is a modern short-range infrared homing ("heat seeking") air-to-air missile, featuring countermeasures resistance with a 180-degree look angle and 120-degrees per second track rate, developed by South Africa's Den ...
– South Africa and Brazil (2019–) *
Merlin The Multi-Element Radio Linked Interferometer Network (MERLIN) is an interferometer array of radio telescopes spread across England. The array is run from Jodrell Bank Observatory in Cheshire by the University of Manchester on behalf of UK Re ...
– Turkey (2024–)


List of missiles by country

''For each missile, short notes are given, including an indication of its range and guidance mechanism.''


Brazil

* MAA-1A Piranha – Short-range IR * MAA-1B Piranha – IR-guided missile. *
A-Darter The V3E A-Darter (Agile Darter) is a modern short-range infrared homing ("heat seeking") air-to-air missile, featuring countermeasures resistance with a 180-degree look angle and 120-degrees per second track rate, developed by South Africa's Den ...
 – Short-range IR (With South Africa)


Canada

* Velvet Glove - short range, semi-active radar-guided


France

* Nord AA.20, AA.25 – radio-guided, beam-riding * Matra R.510 – IR-guided * Matra R.511 – radar-guided * Matra R.550 Magic – short-range, IR-guided * Matra Magic II – IR-guided * Matra R.530 – medium-range, IR- or radar-guided * Matra Super 530F/Super 530D – medium-range, radar-guided * Matra Mistral – IR-guided * MBDA MICA – medium-range, IR- or active radar-guided * MBDA Meteor – long-range active radar-guided missile, integrated on Rafale. * TRIGAT LR


Germany

* Henschel Hs 298 –
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
design,
MCLOS Manual command to line of sight (MCLOS or MACLOS) is a method for guiding guided missiles. With an MCLOS missile, the operator must track the missile and the target simultaneously and guide the missile to the target. Typically the missile is ste ...
, never saw service *
IRIS-T The IRIS-T (infrared imaging system tail/thrust vector-controlled) is a family of short range infrared homing air-to-air missile, air-to-air and short to medium range surface-to-air missile, surface-to-air missiles. It is also called AIM-2000. ...
* MBDA Meteor long-range, active radar-guided, pending contract for integration on Eurofighter. *
Ruhrstahl X-4 The Ruhrstahl Ru 344 X-4 or Ruhrstahl-Kramer RK 344 was a Wire-guided missile, wire-guided air-to-air missile designed by Germany during World War II. The X-4 did not see operational service and thus was not proven in combat but inspired conside ...
 –
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
design, first practical anti-aircraft missile,
MCLOS Manual command to line of sight (MCLOS or MACLOS) is a method for guiding guided missiles. With an MCLOS missile, the operator must track the missile and the target simultaneously and guide the missile to the target. Typically the missile is ste ...
, never saw service * RZ 65 missile project developed by Rheinmetall-Borsig in 1941. After about 3000 tests it revealed itself unsatisfactory owing to an accuracy of only 15%. The project was terminated by the end of the war. * Dornier Viper


India

* Astra Mk 1 – Long-range radar-guided * Astra Mk 2 – Long-range radar-guided * Astra Mk 3 – Long-range radar-guided * Astra IR – Short-range infrared homing * K-100 (missile) – Inertial navigation and
active radar homing Active radar homing (ARH) is a missile guidance method in which a missile contains a radar transceiver (in contrast to semi-active radar homing, which uses only a passive radar, receiver) and the electronics necessary for it to find and track it ...
(with Russia)


Iran

* Fatter – copy of U.S.
AIM-9 Sidewinder The AIM-9 Sidewinder is a short-range air-to-air missile. Entering service with the United States Navy in 1956 and the Air Force in 1964, the AIM-9 is one of the oldest, cheapest, and most successful air-to-air missiles. Its latest variants rema ...
* Sedjil – copy of U.S.
MIM-23 Hawk The Raytheon MIM-23 HAWK ("Homing All the Way Killer") is an American medium-range surface-to-air missile. It was designed to be a much more mobile counterpart to the MIM-14 Nike Hercules, trading off range and altitude capability for a much sm ...
converted to be carried by aircraft * Fakour-90 – copy of U.S. AIM-54 Phoenix


Iraq

* Al Humurrabi – Long-range, semi active radar


Israel

The newest and the oldest member of Rafael's Python family of AAM for comparisons, Python-5 (displayed lower-front) and Shafrir-1 (upper-back) * Python: ** Rafael Shafrir – first Israeli domestic AAM ** Rafael Shafrir 2 – improved Shafrir missile ** Rafael Python 3 – medium-range IR-homing missile with all aspect capabilit

** Python-4, Rafael Python 4 – medium-range IR-homing missile with HMS-guidance capabilit

** Python-5 – improved Python 4 with electro-optical imaging seeker, and 360 degrees lock on. (and launch

** Rafael Derby – Also known as the Alto, this is a medium-range, BVR active radar-homing missil

** Python (missile)#I-Derby ER, I-Derby ER – long range BVR active radar-homing missile * Sky Spear – 6th generation long-range, air-to-air missile


Italy

* Alenia Aspide – Copy of the U.S.
AIM-7 Sparrow The AIM-7 Sparrow (Air Intercept Missile) is an American medium-range semi-active radar homing air-to-air missile operated by the United States Air Force, United States Navy, United States Marine Corps, and various other air forces and navies. Sp ...
, based on the AIM-7E.


Japan

* AAM-1 – (Type 69 air-to-air missile) short-range, IR-seeking air-to-air missile; copy of U.S. AIM-9B Sidewinder. * AAM-2 – short-range, IR-seeking air-to-air missile; similar to AIM-4D, prototype-only. * AAM-3 – (Type 90 air-to-air missile) short-range, all-aspect IR-seeking air-to-air missile. *
AAM-4 The Mitsubishi AAM-4 (Type 99 air-to-air missile, ) is a medium-range active radar homing air-to-air missile. It is a modern beyond-visual-range missile developed in Japan and intended to replace the semi-active radar homing AIM-7 Sparrow missil ...
 – (Type 99 air-to-air missile) medium-range, active radar-guided air-to-air missile. * AAM-5 – (Type 04 air-to-air missile) short-range, all-aspect IR-seeking air-to-air missile.


People's Republic of China

* PL-1 – PRC version of the
Soviet The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
K-5 (missile) (AA-1 Alkali), retired. * PL-2 – PRC version of the Soviet Vympel K-13 (AA-2 Atoll), which was based on AIM-9B Sidewinder

Retired & replaced by PL-5 in PLAAF service. * PL-3 (missile), PL-3 – updated version of the PL-2, did not enter service. * PL-4 – experimental BVR missile based on AIM-7D, did not enter service. * PL-6 – updated version of PL-3, also did not enter service. * PL-5 – updated version of the PL-2, known versions include

** PL-5A – semi-active radar-homing AAM intended to replace the PL-2, did not enter service. Resembles AIM-9G in appearance. ** PL-5B – IR version, entered service in the 1990s to replace the PL-2 SRAAM. Limited off-boresight ** PL-5C – Improved version comparable to AIM-9H or AIM-9L in performance ** PL-5E – All-aspect attack version, resembles AIM-9P in appearance. * PL-7 – PRC version of the IR-homing French R550 Magic AAM, did not enter service

* PL-8 (missile), PL-8 – PRC version of the Israeli Rafael Python 3br>
* PL-9 – short-range IR-guided missile, marketed for export. One known improved version (PL-9C)

* PL-10(old);– semi-active radar-homing medium-range missile based on the HQ-61 SAM

often confused with PL-11. Did not enter service. * PL-10(new)/PL-ASR – short-range off-boresight all-aspect IR-guided missile. * PL-11 – medium-range air-to-air missile (MRAAM), based on the HQ-61C & Italian Aspide (AIM-7) technology. Limited service with J-8-B/D/H fighters. Known versions include

** PL-11 – MRAAM with semi-active radar homing, based on the HQ-61C SAM and Aspide seeker technology, exported as FD-6

** PL-11A – Improved PL-11 with increased range, warhead, and more effective seeker. The new seeker only requires fire-control radar guidance during the terminal stage, providing a basic LOAL (lock-on after launch) capability. ** PL-11B – Also known as PL-11 AMR, improved PL-11 with AMR-1 active radar-homing seeker. ** LY-60 – PL-11 adopted for navy ships for air-defense, sold to Pakistan but does not appear to be in service with the Chinese Navy

* PL-12 (SD-10) – medium-range active radar missil

** PL-12#PL-12A, PL-12A – with upgraded motor ** PL-12B – with upgraded guidance ** PL-12C – with foldable tailfins ** PL-12D – with belly inlet and ramjet motors * F80 – medium-range active radar missile *
PL-15 The PL-15 ( zh, s=霹雳-15, p=Pī Lì-Yāo Wǔ, l=Thunderbolt-15, NATO reporting name: CH-AA-10 Abaddon) is an active radar homing, active radar-guided long-range beyond-visual-range air-to-air missile developed by the People's Republic of Chi ...
 – long-range active radar missile * PL-17 – extreme long-range active radar missile * PL-21 - long-range active radar missile (In Development) * TY-90 – light IR-homing air-to-air missile designed for helicopter


Soviet Union/Russian Federation

* K-5 (missile) (
NATO reporting name NATO uses a system of code names, called reporting names, to denote military aircraft and other equipment used by post-Soviet states, former Warsaw Pact countries, China, and other countries. The system assists military communications by providi ...
AA-1 'Alkali') – beam-riding * Vympel K-13 (NATO reporting name AA-2 'Atoll') – short-range IR or SARH * Kaliningrad K-8 (NATO reporting name AA-3 'Anab') – IR or SARH * Raduga K-9 (NATO reporting name AA-4 'Awl') – IR or SARH * Bisnovat R-4 (NATO reporting name AA-5 'Ash') – IR or SARH * Bisnovat R-40 (NATO reporting name AA-6 'Acrid') – long-range IR or SARH * Vympel R-23/R-24 (NATO reporting name AA-7 'Apex') – medium-range SARH or IR * Molniya R-60 (NATO reporting name AA-8 'Aphid') – short-range IR * Vympel R-33 (NATO reporting name AA-9 'Amos') – long-range active radar * Vympel R-27 (NATO reporting name AA-10 'Alamo') – medium-range SARH or IR * Vympel R-73 (NATO reporting name AA-11 'Archer') – short-range IR * Vympel R-77 (NATO reporting name AA-12 'Adder') – medium-range active radar * Vympel R-37 (NATO reporting name AA-13 'Axehead') – long-range SARH or
active radar homing Active radar homing (ARH) is a missile guidance method in which a missile contains a radar transceiver (in contrast to semi-active radar homing, which uses only a passive radar, receiver) and the electronics necessary for it to find and track it ...
* Novator KS-172 AAM-L – extreme long-range, inertial navigation with terminal
active radar homing Active radar homing (ARH) is a missile guidance method in which a missile contains a radar transceiver (in contrast to semi-active radar homing, which uses only a passive radar, receiver) and the electronics necessary for it to find and track it ...


South Africa

*
A-Darter The V3E A-Darter (Agile Darter) is a modern short-range infrared homing ("heat seeking") air-to-air missile, featuring countermeasures resistance with a 180-degree look angle and 120-degrees per second track rate, developed by South Africa's Den ...
 – Short-range IR (With Brazil) * V3 Kukri – Short-range IR * R-Darter – Beyond-visual-range (BVR) radar-guided missile


Taiwan

* Sky Sword I (TC-1) – air-to-air * Sky Sword II (TC-2) – air-to-air


Turkey

* Bozdoğan (Merlin) – WVRAAM (within-visual-range air-to-air missile) * Gökdoğan (Peregrine)BVRAAM (beyond-visual-range air-to-air missile) * Akdoğan (Gyrfalcon) – Akdoğan is a 'mini' air-to-air missile intended to be cost-effective and to be used in UAVs such as Bayraktar Akıncı and TAI Aksungur. * Gökhan – it was officially confirmed that this variant would have a
Ramjet A ramjet is a form of airbreathing jet engine that requires forward motion of the engine to provide air for combustion. Ramjets work most efficiently at supersonic speeds around and can operate up to . Ramjets can be particularly appropriat ...
. * Sungur -
MANPADS Man-portable air-defense systems (MANPADS or MPADS) are portable shoulder-launched surface-to-air missiles. They are guided weapons and are a threat to low-flying aircraft, especially helicopters and also used against low-flying cruise missi ...
Air-to-air version also available for use on UAVs


United Kingdom

* Fireflash – short-range beam-riding * Firestreak – short-range IR * Red Top – short-range IR * Taildog/SRAAM – short-range IR * Skyflash – medium-range radar-guided missile based on the AIM-7E2, said to have quick warm-up times of 1 to 2 seconds. *
AIM-132 ASRAAM The Advanced Short Range Air-to-Air Missile (ASRAAM), also known by its United States designation AIM-132, is an imaging infrared homing air-to-air missile, produced by MBDA UK, that is designed for close-range combat. It is in service in the ...
 – short-range IR * MBDA Meteor – long-range active radar-guided missile with a solid fuel ducted ramjet


United States


Retired

*
AIM-4 Falcon The Hughes AIM-4 Falcon was the first operational guided air-to-air missile of the United States Air Force. Development began in 1946; the weapon was first tested in 1949. The missile entered service with the USAF in 1956. Produced in both heat- ...
 – radar-guided (later IR-seeking) * AIM-26 Falcon * AIM-47 Falcon * AIM-54 Phoenix – long-range, semi-active-guided and active radar-guided; retired in 2004


Operational

*
AIM-7 Sparrow The AIM-7 Sparrow (Air Intercept Missile) is an American medium-range semi-active radar homing air-to-air missile operated by the United States Air Force, United States Navy, United States Marine Corps, and various other air forces and navies. Sp ...
 – medium-range, semi-active radar-guided *
AIM-9 Sidewinder The AIM-9 Sidewinder is a short-range air-to-air missile. Entering service with the United States Navy in 1956 and the Air Force in 1964, the AIM-9 is one of the oldest, cheapest, and most successful air-to-air missiles. Its latest variants rema ...
 – short-range, IR-seeking * AIM-92 Stinger – short-range, IR-seeking; launched from helicopters *
AIM-120 AMRAAM The AIM-120 Advanced Medium-Range Air-to-Air Missile (AMRAAM) ( ) is an American Beyond-visual-range missile, beyond-visual-range air-to-air missile capable of all-weather day-and-night operations. It uses active transmit-receive radar guidance ...
 – medium-range, active radar-guided; replaces
AIM-7 Sparrow The AIM-7 Sparrow (Air Intercept Missile) is an American medium-range semi-active radar homing air-to-air missile operated by the United States Air Force, United States Navy, United States Marine Corps, and various other air forces and navies. Sp ...
* AIM-174 - extreme long-range, active radar-guided


In development

* AIM-260 JATM – Under development by
Lockheed Martin The Lockheed Martin Corporation is an American Arms industry, defense and aerospace manufacturer with worldwide interests. It was formed by the merger of Lockheed Corporation with Martin Marietta on March 15, 1995. It is headquartered in North ...
* AIM-160 CUDA/SACM – Under development * Boeing LRAAM * LREW (Long-Range Engagement Weapon programme) * MAM (Modular Advanced Missile) * Raytheon Peregrine – Compact medium-range active radar missile


Typical air-to-air missiles


See also

*
Air-to-air rocket An air-to-air rocket or air interception rocket is an unguided projectile fired from aircraft to engage other flying targets. They were used briefly in World War I to engage enemy observation balloons and in and after World War II to engage enem ...
*
Missile A missile is an airborne ranged weapon capable of self-propelled flight aided usually by a propellant, jet engine or rocket motor. Historically, 'missile' referred to any projectile that is thrown, shot or propelled towards a target; this ...
*
Missile guidance Missile guidance refers to a variety of methods of guiding a missile or a guided bomb to its intended target. The missile's target accuracy is a critical factor for its effectiveness. Guidance systems improve missile accuracy by improving its P ...
*
Guided missile A missile is an airborne ranged weapon capable of Propulsion, self-propelled flight aided usually by a propellant, jet engine or rocket motor. Historically, 'missile' referred to any projectile that is thrown, shot or propelled towards a targ ...
*
List of missiles Below is a list of missiles, sorted alphabetically into large categories and subcategories by name and purpose. Other missile lists Types of missiles: * Conventional guided missiles ** Air-to-air missile ** Air-to-surface missile ** Anti-radia ...
* Missile designation


References


Bibliography

* ''Albert Ball, V. C.'' Chaz Bowyer. Crecy Publishing, 2002. , .


External links


Air-to-air missile non-comparison table
{{Navboxes , list = {{Russian and Soviet missiles, AAM Air-to-air missiles Missile types