The FIM-92 Stinger is an American-designed man-portable air-defense system (MANPADS) that operates as an infrared homing surface-to-air missile (SAM). It can be adapted to fire from a wide variety of ground vehicles, and from helicopters and drones as the Air-to-Air Stinger (ATAS). It entered service in 1981 and is used by the militaries of the United States and 29 other countries. Principally manufactured by Raytheon Missiles & Defense, it is also produced under license by Airbus Defence and Space in Germany and by Roketsan in Turkey.
Description The FIM-92 Stinger is a passive surface-to-air missile that can be shoulder-fired by a single operator (although standard military procedure calls for two operators, team chief and gunner). The Stinger was intended to supplant the FIM-43 Redeye system, the principal difference being that, unlike the Redeye, the Stinger can acquire the target from head-on, giving much more time to acquire and destroy the target. The FIM-92B missile can also be fired from the M1097 Avenger and the M6 Linebacker. The missile is also capable of being deployed from a Humvee Stinger rack and can be used by airborne troops. A helicopter launched version exists and is called Air-to-Air Stinger (ATAS).
The missile is long and in diameter, with fins. The missile itself weighs , while the missile with its launch tube and integral sight, fitted with a gripstock and Identification Friend or Foe (IFF) antenna, weighs approximately . It has a targeting range of up to and can engage low-altitude enemy threats at up to .
The Stinger is launched by a small ejection motor that pushes it a safe distance from the operator before engaging the main two-stage solid-fuel sustainer, which accelerates it to a maximum speed of . The warhead contains of HTA-3 (a mix of HMX, TNT, and aluminium powder) explosive with an impact fuze and a self-destruct timer that functions 17 seconds after launch.
To fire the missile, a BCU (Battery Coolant Unit) is inserted into the gripstock. This device consists of a supply of high-pressure gaseous argon, which is injected into the seeker to cryogenically cool it to operating temperature, and a thermal battery, which provides power for target acquisition: a single BCU provides power and coolant for roughly 45 seconds, after which another must be inserted if the missile has not been fired. The BCUs are somewhat sensitive to abuse and have a limited shelf life due to argon leakage. The IFF system receives power from a rechargeable battery, which is part of the IFF interrogator box, which plugs into the base of the gripstock's pistol grip. Guidance to the target is initially through proportional navigation, then switches to another mode that directs the missile towards the target airframe instead of its exhaust plume.
There are three main variants in use: the Stinger Basic, Stinger-Passive Optical Seeker Technique (POST), and Stinger-Reprogrammable Microprocessor (RMP). These correspond to the FIM-92A, FIM-92B, and FIM-92C and later variants respectively.
The POST and RMP variants have a dual-detector seeker: IR and UV. This allows it to distinguish targets from countermeasures much better than the Redeye and FIM-92A, which have IR-only. While modern flares can have an IR signature that is closely matched to the launching aircraft's engine exhaust, there is a readily distinguishable difference in UV signature between flares and jet engines. The Stinger-RMP is so-called because of its ability to load a new set of software via ROM chip inserted in the grip at the depot. If this download to the missile fails during power-up, basic functionality runs off the onboard ROM. The four-processor RMP has 4 KB of RAM for each processor. Since the downloaded code runs from RAM, there is little space to spare, particularly for processors dedicated to seeker input processing and target analysis.
History
The missile began as a program by General Dynamics to produce an improved variant of their 1967 FIM-43 Redeye. Production of the Redeye ran from 1969 to 1982, with a total production of around 85,000 missiles. The program was accepted for further development as Redeye II by the U.S. Army in 1971 and designated FIM-92; the Stinger appellation was chosen in 1972. Because of technical difficulties that dogged testing, the first shoulder launch was not until mid-1975. Production of the FIM-92A began in 1978. An improved Stinger with a new seeker, the FIM-92B, was produced from 1983 alongside the FIM-92A. Production of both the A and B types ended in 1987 with around 16,000 missiles produced.
The replacement FIM-92C began development in 1984, and production began in 1987. The first examples were delivered to frontline units in 1989. C-type missiles were fitted with a reprogrammable microprocessor, allowing for incremental firmware updates. Later missiles designated D received improvements to improve their ability to defeat countermeasures, and later upgrades to the D were designated G.
The FIM-92E or Stinger RMP Block I was developed from 1992 and delivered from 1995 (certain sources state that the FIM-92D is also part of the Block I development). The main changes were again in the sensor and the software, improving the missile's performance against low-signature targets. A software upgrade in 2001 was designated FIM-92F. The development of the Stinger RMP Block II began in 1996 using a new focal plane array sensor to improve the missile's effectiveness in "high clutter" environments and increase the engagement range to about 25,000 feet (7,600 m). Production was scheduled for 2004, but was cancelled due to budget cuts.
Since 1984 the Stinger has been issued to many U.S. Navy warships for point defense, particularly in Middle Eastern waters, with a three-man team that can perform other duties when not conducting Stinger training or maintenance. Until it was decommissioned in September 1993, the U.S. Navy had at least one Stinger Gunnery Detachment attached to Beachmaster Unit Two in Little Creek Virginia. The sailors of this detachment would deploy to carrier battlegroups in teams of two to four sailors per ship as requested by Battle Group Commanders.
Replacement The original Stinger's reprogrammable microprocessor has become obsolete in 2023, and a service life extension will keep the Block I in service until 2030. With the arsenal declining from obsolescence, on 10 November 2020 the U.S. Army issued a request for information for a replacement MANPADS. The new system will be compatible with the Stinger Vehicle Universal Launcher used on the IM-SHORAD and be able to defeat fixed and rotary-wing aircraft, as well as Group 2 and 3 UAS as well as or better than the Stinger. A contract for up to 8,000 missiles is planned to be awarded by 2026. The request for information to interested firms only went out in April 2022, and RTX and Lockheed Martin were selected to competitively develop the Stinger replacement in September 2023.
According to Reuters, the U.S. government has signed a contract for 1,468 Stingers worth a total of $687 million, to replenish stock sent to Ukraine. Raytheon Chief Executive Greg Hayes said on 26 April 2022: "Some of the components are no longer commercially available, and so we're going to have to go out and redesign some of the electronics in the missile of the seeker head. That's going to take us a little bit of time".
In January 2023, the U.S. Army said it expected to increase Stinger production to 60 missiles per month by 2025, an increase of 50% from the current rate. The Dual Detector Assembly (DDA) will be redesigned because a previous DDA part is no longer being made. The old DDA will continue to be used in production up until stocks are exhausted, which is expected by 2026 when deliveries of Stingers with the new component are expected to begin.
The U.S. Army Combat Capabilities Development Command Aviation & Missile Center (DEVCOM AvMC) launched the Red Wasp program, an advanced air defense interceptor initiative designed to enhance the capabilities of the long-serving FIM-92 Stinger missile. Red Wasp integrates solid fuel ramjet propulsion into the Stinger’s form factor to significantly increase its effective range. The system uses an integral rocket ramjet, a dual-mode propulsion cycle that begins with a conventional solid rocket motor to accelerate the missile to supersonic speeds. After burnout, a front-end port opens to allow air into the combustion chamber, where it ignites the ramjet fuel. This air-breathing phase eliminates the need for onboard oxidizers, improving fuel efficiency and overall performance. Red Wasp is intended to enable soldiers to engage Short Range Air Defense (SHORAD) threats such as unmanned aerial systems equipped with Intelligence, Surveillance, and Reconnaissance (ISR) capabilities at much longer distances, helping to deny adversarial targeting and increase force survivability. As ISR sensor technology advances and extends the effective range of enemy surveillance, Red Wasp offers a critical countermeasure by allowing U.S. forces to intercept threats at greater ranges. Following a successful 2024 flight test at Dugway Proving Ground, ongoing development is focused on refining ramjet fuel formulations and thermal insulation, with plans to collaborate with industry partners and scale the technology for broader Army applications.
Variants Air-to-Air Stinger (ATAS): Used as short range air-to-air missile. The system is mainly designed for attack helicopters. FIM-92A: Stinger Basic: The basic model. FIM-92B: Stinger POST: In this version, the infrared seeker head was replaced by a combined IR/UV seeker that utilized rosette scanning. This resulted in achieving significantly higher resistance to enemy countermeasures (flares) and natural disturbances. Production ran from 1981 to 1987; a total of 600 missiles were produced. FIM-92C: Stinger RMP: The resistance to interference was increased again by adding more powerful digital computer components. Moreover, the software of the missile could now be reconfigured in a short time in order to respond quickly and efficiently to new types of countermeasures. Until 1991, some 20,000 units were produced for the U.S. Army alone. FIM-92D: Various modifications were continued with this version in order to increase the resistance to interference. FIM-92E: Stinger—RMP Block I: By adding a new rollover sensor and revised control software, the flight behavior was significantly improved. Additionally, the performance against small targets such as drones, cruise missiles and light reconnaissance helicopters was improved. The first deliveries began in 1995. Almost the entire stock of U.S. Stinger missiles was replaced by this version. FIM-92F: A further improvement of the E version and the current production version. FIM-92G: An unspecified upgrade for the D variant. FIM-92H: Indicates a D variant that has been upgraded to the E standard. Stinger—RMP Block II: This variant was a planned developed based on the E version. The improvements included an imaging infrared seeker head from the AIM-9X. With this modification, the detection distance and the resistance to jamming was to be greatly increased. Changes to the airframe would furthermore enable a significant increase in range. Although the missile reached the testing phase, the program was dropped in 2002 for budgetary reasons. FIM-92J: Block I missile upgrade to replace aging components to extend service life an additional 10 years. Upgrades include a proximity fuze warhead section, equipped with a target detection device to increase effectiveness against unmanned aerial vehicles, a new flight motor and gas generator cartridge, as well as new designs for the o-rings and integral desiccant cartridge.Stinger upgrade to increase service life, capabilities , Army, 29 October 2014