AIM-9 SIDEWINDER * USA * ANTI-AIR

LATEST UPDATE 23 MAY 1992
DESCRIPTION
The simple, effective infrared-homing Sidewinder is the most widely used Air-to-Air Missile (AAM) outside of the Soviet Union with more than 110,000 produced. Its unique "rolleron" stabilization system consists of air-driven wheels fitted in the rear outside corner of the rear fins. The spinning wheels gyroscopically stabilize the missile effectively with few moving parts and at low cost. See Variants for changes in seeker, warhead, and motor.

It is used by a variety of Western fixed-wing combat aircraft and helicopters, and has been adopted for surface-to-air use as the Chaparral missile.

STATUS
Initial operational capability AIM-9B in 1956, AIM-9E in 1967, AIM-9H in 1973, AIM-9J in 1977, AIM-9L/P in 1978, AIM-9M in 1983. Development of the missile began in 1949 at the Naval Weapons Center in China Lake, Calif; first flight on 11 September 1953.

Manufactured by Loral Aeronutronics (formerly Ford Aerospace and Communications), Newport Beach, Calif and Raytheon Company, Lowell, Mass in the USA; Bodenseewerk Geratetechnik GmbH (BGT) in West Germany (a West German-British-Italian-Norwegian consortium); Mitsubishi Industries in Japan also build current models.

PLATFORMS
Nearly every major fighter and strike aircraft, and several helicopters can carry Sidewinders

USERS
USA
  • Air Force
  • Marine Corps
  • Navy
IranPortugal
IsraelSaudi Arabia
ItalySingapore
JapanSouth Africa
AustraliaJordanSpain
BahrainKenyaSweden
BelgiumSouth KoreaSwitzerland
CanadaKuwaitTaiwan
ChileMalaysiaThailand
DenmarkMoroccoTurkey
EgyptNorwayUnited Arab Emirates
FranceOmanVenezuela
GermanyPakistanYemeni Rep
Great Britain Philippines-
Greece--

CHARACTERISTICS
Missile weight AIM-9H186 lb (84.4 kg)
AIM-9L/M191 lb (86.5 kg)
Warhead AIM-9B/E/J/N/P10 lb ( 4.5 kg)
AIM-9D/G/H22.4 lb (10.2 kg)
AIM-9L/M20.8 lb ( 9.4 kg)
Dimensions Configurationsimple thin cylinder, 4 cruciform "cropped delta" wings with stabilizing "rollerons" on the trailing edges, steerable cruciform foreplanes (see VARIANTS for seeker head differences)
Length (AIM-9L/M)9 ft 6 in (2.85 m)
Diameter5 in (127 mm)
Wing span2 ft 1 in (635 mm)
Propulsion Solid-fuel rocket by Aerojet, Hercules, Rockwell, or Thiokol
Mk 17 on B/E/J/N/P
Mk 36 with flexadyne propellant on H/L/M
Performance speed - Mach 2+
maximum range 10 nm (11.5 mi; 18.5 km)
Warhead AIM-9L/M - annular blast fragmentation wrapped in a sheath of preformed rods
also see VARIANTS
Sensors/Fire Control Except for AIM-9C, all versions have used infrared homing AIM-9L/M is the first with all-aspect seeker analog roll-control autopilot
see VARIANTS

VARIANTS
Prototype designated XAAM-N-7
Production designation SW-1, US Navy designation AAM-N-7, US Air Force designation GAR-8. AIM-9 designation given to all Sidewinders in 1962.
AIM-9/A/B
First 3 nearly identical versions. AIM-9B most numerous production version with almost 80,000 manufactured by Philco (later Ford) and Raytheon. Lightest variant at 155 lb (70.4 kg), blunt warhead had vacuum tubes and an uncooled lead sulfide (PbS) seeker with 25-deg Field of View (FOV) and 11-deg per second tracking, 20-deg "dead zone" (i.e., where an engine plume is obscured by the sun) later reduced to 5 deg, 70 Hz reticle scan, passive Infrared (IR) fuze, and triangular cruciform foreplanes. Thousands of B-models were rebuilt as E/J models.
9B-FGW.2 (AIM-9F)
BGT-produced upgrade of 9B with silicon seeker dome, carbon dioxide-cooled seeker, and some semi- conductor electronics. 15,000 built.
AIM-9C/D
Two variants in limited production (1,000 each). Mk 36 rocket, conical nose, and larger swept delta foreplanes on both variants. 9C had Motorola semi-active radar homing head and was assigned to LTV F-8 Crusaders. Weight 185 lb (84 kg). Not successful.

AIM-9D had nitrogen-cooled PbS seeker with 40-deg FOV, magnesium fluoride dome, and 125 Hz reticle scan and 12-deg tracking speed. Larger continuous rod warhead detonated by IR or HF (high-frequency) fuze. Weight 195 lb (88.5 kg). Variant was a big improvement and used as basis for later developments including the MIM-72 Chaparral land-based and Sea Chaparral shipboard surface-to-air missiles.

AIM-9E
5,000 B-models were given a new seeker with Peltier (thermoelectric) cooling, better low-altitude capability against maneuvering targets, wider search angle, 100-Hz reticle scan and still better (16.5-deg per second) tracking speed. The nose is more pointed (bullet-shaped), and the swept delta wings are further back on the head.
AIM-9G/H
2,120 9G versions developed by Raytheon were new-production upgrades of the D design with Sidewinder Expanded Acquisition Mode (SEAM).
AIM-9H
Major production variant (7,720) for the US Navy (plus one-time buy of 800 for the US Air Force). Introduced solid-state electronics, off-boresight acquisition and launch capability, even faster tracking (now 20 deg/sec), lead bias (to direct missile forward toward more vulnerable part of aircraft fuselage), double-delta foreplanes.
Weight: 186 lb (84.5 kg)
Range: 11 mi (17.7 km).
AIM-9J/N
14,000 conversions of B/E versions to include part solid-state electronics and double-delta foreplanes. 7,000 N versions were further upgrades.
Weight: 172 lb (78 kg)
Length: 10 ft 0.9 in (3.07m),
Range: 9 mi (14.5 km).
Entered service in 1977.
AIM-9L/M
"Third generation" in production. First all-aspect AIM-9. Double-delta foreplanes with pointed tips, argon-cooled indium-antimony (InSb) seeker with FM-AM conical scan that improves tracking stability and increases seeker sensitivity, active optical target detector, 8-diode gallium-arsenide (GaAs) laser fuze (in which the lasers act as "whiskers" around the warhead), and a new warhead.

The 9M has lower-smoke motor, the 9L seeker with better background discrimination, and better IR Counter Countermeasures (IRCCM).

AIM-9P
AIM-9B/E/J upgrade or newly built for aircraft that cannot fire the AIM-9L/M.
AIM-9Q
AIM-9M with upgraded guidance/control section.
AIM-9R
Originally funded as AIM-9M Product Improvement Program (PIP). Still further improved Sidewinder developed under Pave Prism research effort for enhanced clutter rejection, better aim-point selection, increased field-of-regard for tracking highly maneuverable or off-boresight targets, better IRCCM.

3-gimbal stabilized optical platform bearing a new Imaging IR (IRR) seeker with focal plane array which can lock on at greater ranges than previous versions, digital image processing and autotrack, software upgrade through Electronically Programmable Read-Only Memory (EPROM).

Increased packaging density for circuit-card assemblies using surface mount technology. Phased out the refrigeration (missile support) system. Cold gas servos increased maneuverability.

$50 million development effort began in 1987. The first 65 pre-production IIR seekers were delivered to the US Navy in May 1990. 5 of the first 6 flight tests were successful. Limited production for the US Navy had been planned for FY1992 with full-scale production of approximately 5,000 missiles beginning in FY1993.

In September 1991, the US Air Force dropped out of the AIM-9R program, arguing that the $103,000 unit cost was too high.

(Unit cost estimates ranged from $70,000--by the Navy--to a high of $180,000.) The Air Force withdrawal put the full cost and risk on Navy budgets, leading to a decision in December to drop the missile from its 5-year program.

AIM-9S
AIM-9M with IRCCM deleted for Foreign Military Sales customers.
AIM-9X
Navy/Air Force program for successor to Sidewinder. Acquisition plan approval planned by mid-1992 after completion of requirements documentation.
Box Office/Improved Sidewinder
Formerly classified US Air Force program begun in 1988 with Raytheon to overhaul Sidewinder design. Candidate for AIM-9X program.

Introduces tail control with small independently activated tail fins shaped like those on the MIM-104 Patriot, eliminates wings and rollerons, relies on body for lift. Missile has greater acceleration, 50-g maneuvering capability, fits into 1/4 of weapons bay space required for conventional AIM-9. Guidance system has Electronically Erasable Programmable Read- Only Memory (EEPROM), digital roll-control autopilot.

Max weight is 185 lb (83.9 kg) and warhead 25 lb (11.3 kg). Length is 10 ft 2 in (3.10 m), tail span 11 in (279 mm). "Box size" (i.e., the square dimensions of its container) is 7.9 in (200 mm) compared to the 20 in (508 mm) of the standard Sidewinder.

Boa
Similar to Box Office, but undertaken by US Naval Air Test Center at China Lake, Calif. Wings reduced in size, but not eliminated.
Helicopter-launched Sidewinder
2 AIM-9 fired from McDonnell-Douglas Helicopters AH-64 Apache in November 1987. Company-funded test of suitability as helicopter self-defense weapon. One was fired from hovering flight, the other while the AH-64 was flying at 81 kts (93 mph; 150 km/h).
MIM72
Chaparral surface-launched version; see separate database entry.


ISSUES
FY1988 was the last year that the US Navy procured the Sidewinder, the service then believing it had a sufficient stock of Sidewinders to meet its immediate needs until its replacement, the AIM-132 Advanced Short Range Air-to-Air Missile (ASRAAM), entered production in the early 1990s. Frequent delays in ASRAAM and rising costs in the AIM-9R program led the Navy to join Air Force in procuring AIM-9Ms beginning in FY1993. The AIM-9X is under development for deployment at the end of the decade.

OPERATIONAL NOTES
The Sidewinder's first combat use was in October 1958, when Taiwanese in F-86s launched them against Chinese MiG-17s, claiming as many as 14 shot down in one day. AIM-9s scored most of the air-to-air kills made by US Navy and Air Force aircraft in the Vietnam War, and by the Israeli Air Force in the 1967 and 1973 wars in the Middle East.

During the 1982 air engagements over Lebanon's Bekaa Valley, 51 out of the 55 Syrian-flown MiGs shot down were hit by Sidewinders.

In the 1982 conflict in the Falkland Islands, between Great Britain and Argentina, British Sea Harrier Vertical Short-Take- off and Landing (VSTOL) aircraft used AIM-9L Sidewinders for 16 confirmed kills and 1 probable against Argentine aircraft (of a total 20 air-to-air kills; another 45 Argentine aircraft were shot down by surface-to-air missiles in that conflict).

Compared to its dominant role in the 1982 Falkland Islands campaign as well as the Israeli operation in Lebanon, the Sidewinder was used relatively little during Operation Desert Storm's air assault against Iraqi targets.

The lower use resulted from the nature of most engagements (a stern chase with little "jinking" by the targets) and improvements in the longer-range AIM-7 Sparrow AAM that eliminated the need for a follow-up attack at closer range.

However, Sidewinders fired by US Air Force F-15C Eagle jets downed 6 Iraqi combat aircraft. 2 more Su-22 Fitters were shot down by AIM-9s 3 weeks after the ceasefire. A Saudi F-15 pilot downed 2 French-built Iraqi Mirage F1s with Sidewinders in a single attack. 2 F/A-18 Hornets and an F-14 Tomcat scored with AIM-9s, the Hornets shooting down MiG-21 Fishbeds and the Tomcat downing a helicopter.


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Information from the US Navy Fact File