AIM-9X Block II & Beyond: The New Sidewinder Missiles
Raytheon’s AIM-9X Block II would have made Top Gun a very short movie. It’s the USA’s most advanced short range air-air missile, capable of using its datalink, thrust vectoring maneuverability, and advanced imaging infrared seeker to hit targets behind the launching fighter. Unlike previous AIM-9 models, the AIM-9X can even be used against targets on the ground.
These changes will help keep it competitive against foreign missiles like MBDA UK’s AIM-132 ASRAAM, RAFAEL of Israel’s Python 5, the multinational German-led IRIS-T, and Russia’s R73/ AA-11 Archer. So far, only American fighter types can use AIM-9X missiles, but that hasn’t stopped a slew of export requests and sales, especially in the Middle East.
AIM-9X: The Program
AIM-9X Variants
The AIM-9X is the USA’s newest short-range air-to-air missile, using an advanced array seeker that widens the missile’s “boresight” cone, and allows a TV-like “imaging infrared” picture that’s much harder to fool with decoys. The missile’s maneuvering fins are smaller than previous Sidewinders, lowering aerodynamic drag in flight, but the missile compensates with thrust vectoring in the rocket’s exhaust for added maneuverability. The final piece of the puzzle is lock-on after launch capability (the key Block II improvement), which takes full advantage of the 9X’s improved sighting cone, maneuverability, and low drag. By telling the missile to fly to a designated location and look for a target, kills have even been scored behind the firing aircraft.
On the maintenance end, the AIM-9X avoids the need for argon cooling, and the missiles are field reprogrammable rather than forcing a hardware swap out of the circuit cards.
These new capabilities came with one significant cost: because the AIM-9X is all-digital, aircraft that want to fire it need integration work to make them fully compatible. At present, F-16C/D Vipers, F/A-18 Hornet and Super Hornet family aircraft, F-15C/D Eagles, and some F-15 Strike Eagle variants can use the AIM-9X. It has been bought for F-15 Strike Eagles flown by Singapore (F-15SG) and South Korea (F-15K), and will be integrated with Saudi Arabia’s forthcoming F-15SA Strike Eagles.
Other American aircraft, and foreign aircraft that can fire Sidewinders, are limited to previous-generation AIM-9Ms for now. Note that this list even includes the F-22A Raptor, until its Increment 3.2B upgrade program is fielded around 2017. The missile is being tested on the F-35 Lightning II stealth fighter, but that combination won’t be operational for a few years. Other prospective customers include UAE’s standing request (but no contract, yet) to equip its F-16E/F Block 60 “Desert Falcons” with the AIM-9X.
AIM-9X Block I. The AIM-9X Block I (missile)/ OFS 8.220 (software load) combination includes limited lock-on-after-launch, full envelope off-boresight capability without a JHMCS helmet mounted display, and improved flare rejection performance against countermeasures. It uses the warhead, fuze, and rocket motor from the previous AIM-9M missile, but adds thrust-vectoring, a new body, a new imaging infrared seeker, a new digital processor, and a new autopilot.
The USA bought 3,097 Block I missiles: 1,745 were USAF, incl. 67 modified from AIM-9Ms in FY 2001. The US Navy bought 1,352, inc. 63 modified from AIM-9Ms in FY 2001. AIM-9X Block I export customers included Australia, Denmark, Finland, Poland, Singapore, South Korea, Switzerland, and Turkey.
Block I production was terminated early by the US military, and orders ended in FY 2011. Because it was separated out as its own program and terminated early, we don’t cover it here.
AIM-9X-2. This variant swaps in a new processor, a new ignition battery for the rocket motor, an electronic ignition safety/arm device, better all weather laser fusing against small targets, and the DSU-41/B Active Optical Target Detector (AOTD) fuze/datalink assembly. None of these things radically change performance by themselves, but OFS 8.3 software upgrades help bring them all together.
AIM-9X Block II. A combination of AIM-9X-2 hardware and OFS 8.3+ software. OFS 8.3 added trajectory management to improve range, makes full use of the datalink with the launching aircraft, and improves lock-on-after-launch and target re-acquisition performance. Those capabilities have been refined further in OFS 9.3.
Overall, the Block II has about 85% parts commonality with the Block I. The 2-way datalink is the most significant single Block II change, as it allows the missile to fly toward targets its seeker can’t yet see, using target position tracking from its fighter. Improved seeker lock-on-after-launch and re-acquisition makes the missile harder to evade, and the new ‘lofting’ fly-out profile boosts the Block II enough to give it some capabilities beyond visual range.
AIM-9X Block III. US NAVAIR is pushing for an AIM-9X Block III, with Initial Operational Capability by 2022. The Block III aims for a 60% range boost from a new rocket motor and better flight programming, and a new insensitive munitions warhead for safer use at sea. That range would start to push the AIM-9X into comparable territory to France’s MICA, a medium-range missile with radar and IR-guided versions. The decision represents the military’s growing recognition that the prospect of enemy stealth planes, and of advanced DRFM radar jammers on advanced fighters, make it a bad idea to rely too heavily on radar-guided AIM-120 AMRAAMs.
Block II+ Program and Sales
AIM-9X Block II production began in June 2011. In 2012 the Pentagon moved to terminate the Block I program entirely, in favor of the Block II. The Block II was slated for a full-rate production decision in April 2014, and Initial Operational Capability was scheduled for September 2014, but technical problems have delayed the full-rate decision until Q2 2015.
The American Block II program is tracking close to December 2011 baseline cost estimates, which placed it at about $3.99 billion (incl. $178.8 million for R&D) to buy 6,000 missiles. It’s still early days, with another $113.2 million in R&D and 5,321 missiles/ $4.167 billion in US procurement funding left to go as of September 2013. The Block II program experienced its big shift in 2012, so tracking its early days through American budgets is somewhat tricky, but American buys since FY 2011 have revolved exclusively around the Block II:
The USA will buy 6,000 total Block II missiles, under current plans. The USAF will buy 3,352, while the US Navy will buy 2,648. Foreign buys are added over and above, and will help drive down prices thanks to volume production. The current Pentagon budget estimate is roughly $600,000 per missile overall, but current orders are running closer to $500,000, and those prices will drop with enough foreign sales.
Foreign customers for AIM-9X-2 and AIM-9X Block II missiles include Belgium (F-16 MLU), Kuwait (F/A-18C/D), Malaysia (F/A-18D), the Netherlands (F-16 MLU), Morocco (F-16C/Ds), Saudi Arabia (F-15s), and Singapore (F-15SG, could add to F-16s).
AIM-9X Block II Export requests are pending from Australia (F/A-18F and F-35A), Oman (F-16C/D), South Korea (1 no platform, 1 part of F-35A request), and the UAE (F-16E/F).
Contracts & Key Events
Note that this article only covers export requests, contracts, etc. that involve or include the AIM-9X Block II and AIM-9X-2, since the latter will presumably receive the software upgrade. Unless otherwise noted, Raytheon Missile Systems in Tucson, AZ is the contractor, and US Naval Air Systems Command (NAVAIR) in Patuxent River, MD manages the contracts.
Finally, some quick terminology may be helpful:
- All-Up Rounds include both the live missile and its storage container.
- CATM (captive air training missiles) have no warhead or rocket motor: a dummy back end and live front end.
- NATMs are fully live missiles with a telemetry package in place of the warhead, and are used for test shots.
- “Propulsion Steering Sections” include the rocket motor, internal thrust vectoring vanes, and control actuation system for the tail fins.
- A Guidance Section is the missile seeker and all electronics.
- An “Active Optical Target Detector” is the mechanism that tells the missile when it’s within lethal range of its target for detonation.
FY 2014
Orders from USA, Belgium, Kuwait, Morocco, Netherlands, Singapore, Turkey; Export requests from Australia, South Korea; USN has suspended deliveries.
June 25/14: Lot 14. Raytheon Missile Systems in Tucson, AZ receives a $223.1 million fixed-price-incentive-firm contract for 485 AIM-9X Block II All Up Round missiles, and more. The USAF and USN are using FY 2014 missile budgets:
USAF ($74.1 million, 33.24%)
- 158 AIM-9X Block II AUR
- 55 CATM-9X Block II
- 12 Special Air Training Missiles
- 60 All Up Round storage containers
US Navy ($74.1 million, 33.2%)
- 161 AIM-9X Block II AUR
- 47 CATM-9X Block II
- 13 Special Air Training Missiles
- 59 All Up Round storage containers
Kuwait ($390,283, 0.18%, q.v. Feb 27/12 request)
- 1 AIM-9X Block II AUR
Morocco ($522,442, 0.23%, q.v. July 8/12 request)
- 2 CATM-9X Block II
- 1 All Up Round storage container
- 1 Spare Advanced Optical Target Detector
Netherlands ($16.5 million, 7.38%, q.v. Oct 17/12 request)
- 28 AIM-9X Block II AUR
- 2 Spare Tactical Guidance Units
- 20 CATM-9X Block II
- 2 Spare Captive Air Training Missile Guidance Units
- 2 Special Air Training Missiles
- 18 All Up Round storage containers
Singapore ($10.6 million, 4.74%, q.v. April 4/13 request)
- 20 AIM-9X Block II AUR
- 2 Spare Tactical Guidance Units
- 8 CATM-9X Block II
- 5 Spare Captive Air Training Missile Guidance Units
- 8 All Up Round storage containers
- 1 Spare Advanced Optical Target Detector
Turkey (46.9 million, 21.03%, q.v. Dec 4/12 request)
- 117 AIM-9X Block II AUR
- 34 All Up Round storage containers
- 6 Spare Tactical Guidance Units
Work will be performed in Tucson, AZ (43.74%); Andover, MA (10.08%); Valencia, CA (6.10%); Midland, Ontario, Canada (5.54%); Rocket Center, West VA (5.49%); Vancouver, WA (5.07%); Goleta, CA (2.86%); Cheshire, CT (2.05%); Heilbronn, DE, Germany (1.88%); Simsbury, CT (1.61%); Cincinnati, OH (1.22%); San Jose, CA (1.48%); Anniston, AL (1.31%); Maniago, Italy (1.21%); Chatsworth, CA (1.11%); San Diego, CA (1.04%); Montgomery, AL (0.60%); Orlando, FL (0.55%); Valencia, CA (0.53%); Newbury Park, CA (0.50%); El Segundo, CA (0.50%); Claremont, CA (0.43%); Joplin, MO (0.39%); Lombard, IL (0.28%); El Cajon, CA (0.15%); and various locations inside and outside the continental United States (3.98 and 0.30%, respectively). Work is expected to be complete in December 2016. This contract was not competitively procured pursuant to FAR 6.302-1, i.e. no-one else makes these missiles. US Naval Air Systems Command in Patuxent River, MD manages all contracts, either directly or as an FMS agent (N00019-14-C-0053).
June 25/14: Lot 14. Raytheon Missile Systems in Tucson, AZ receives a $28.2 million firm-fixed-price contract modification for 774 AIM-9X Production Inertial Measurement Units retrofits and upgrades, and an engineering investigation for the U.S. Navy ($2.9 million, 10.2%, FY 2013) and USAF ($3.4 million, 12.1%, FY 2012).
This modification also covers a $21.9 million purchase from Belgium, as part of Production Lot 14. That should get them going (q.v. Sept 26/13 request):
- 30 AIM-9X Block II AUR
- 2 Spare Tactical Guidance Units
- 30 CATM-9X Block II
- 8 Spare CATM-9X Block II Guidance Units
- 18 All Up Round Containers
- 1 Spare Advanced Optical Target Detector
- 1 lot of tooling
Work will be performed in Tucson, AZ (43.74%); Andover, MA (10.08%); Valencia, CA (6.10%); Midland, Ontario, Canada (5.54%); Rocket Center, West VA (5.49%); Vancouver, WA (5.07%); Goleta, CA (2.86%); Cheshire, CT (2.05%); Heilbronn, DE, Germany (1.88%); Simsbury, CT (1.61%); Cincinnati, OH (1.22%); San Jose, CA (1.48%); Anniston, AL (1.31%); Maniago, Italy (1.21%); Chatsworth, CA (1.11%); San Diego, CA (1.04%); Montgomery, AL (0.60%); Orlando, FL (0.55%); Valencia, CA (0.53%); Newbury Park, CA (0.50%); El Segundo, CA (0.50%); Claremont, CA (0.43%); Joplin, MO (0.39%); Lombard, IL (0.28%); El Cajon, CA (0.15%); and various locations inside and outside the continental United States (3.98 and 0.30%, respectively). Work is expected to be complete in December 2016. US Naval Air Systems Command, Patuxent River, MD, is the contracting activity (N00019-11-C-0001).
Lot 14 order: USA, Belgium, Kuwait, Morocco, Netherlands, Singapore, Turkey
May 13/14: Australia. The US DSCA announces customer Australia’s official export request for more advanced AIM-9X-2 missiles, beyond their existing AIM-9X Block I stockpile. The estimated cost is up to $534 million, but one of the addenda was equally significant:
“These missiles will be used on the RAAF’s F/A-18 aircraft (and eventually F-35 aircraft) and will maintain the RAAF’s air-to-air capability….”
Australia uses ASRAAMs on its F/A-18AM/BM Hornets, and if they don’t add them to the F-35As, they’ll need to phase out their stock when the Hornets retire in 2022. F-35A Block-2/-3s come integrated with the AIM-9X missile for external carriage. For stealth-maximizing internal carriage, Australia will either have to rely on AIM-120 AMRAAM radar-guided missiles, or pay extra to add the same internal AIM-132 ASRAAM infrared-guided missile capability that Britain is incorporating into its F-35B STOVL aircraft. It’s not an either/or decision, as Australia could integrate ASRAAM and AIM-9X, but this request is another step toward a possible single-SRAAM future for the RAAF. The request includes up to:
- 350 AIM-9X-2 Sidewinder missiles
- 22 AIM-9X-2 Tactical Guidance Units
- 95 AIM-9X-2 Captive Air Training Missiles (CATMs)
- 19 CATM-9X-2 Guidance Units
- 35 AIM-9X Special Air Training Missiles (NATMs) for test shots
- 3 DATM-9X telemetry units
- Plus containers, test sets and support equipment, spare and repair parts, publications and technical documents, personnel training and training equipment, and other forms of US Government and contractor support.
The principal contractor will be Raytheon Missile Systems Company in Tucson, AZ. If a deal is negotiated, additional US Government or contractor representatives will participate in bi-annual, 1-week program management and technical reviews in Australia. They may also be called on to provide technical and logistics support for 2 years. Sources: DSCA #14-12, “Australia – AIM 9X-2 Sidewinder Missiles”.
DSCA request: Australia (350)
April 7/14: Korea. The US DSCA announces a formal request from South Korea for up to $98 million in AIM-9X-2 Sidewinder Missiles and associated equipment. The request includes:
- 76 AIM-9X-2 Sidewinder Block II All-Up-Round Missiles
- 4 AIM-9X-2 Block II spare Tactical Guidance Units
- 24 CATM-9X-2 Captive Air Training Missiles
- 8 CATM-9X-2 Block II spare Missile Guidance Units
- Plus containers, missile support and test equipment, provisioning, spare and repair parts, personnel training and training equipment, publications and technical data, and other US government and contractor support.
South Korea is already an AIM-9X Block I customer. This request doesn’t specify the platform, but the ROKAF’s F-16s haven’t been upgraded yet, which means it’s likely to represent additional AIM-9X orders for their F-15K Strike Eagles. The principal contractor will be Raytheon Missile Systems Company in Tucson, AZ, and no additional personnel will be needed in the ROK. US Government or contractor personnel will conduct in-country visits on occasion, per management oversight and support requirements. Sources: DSCA #14-06, “Korea – AIM-9X-2 Sidewinder Missiles”.
DSCA: South Korea request
April 7/14: Support. Raytheon Missile Systems in Tucson, AZ receives a $9.6 million indefinite-delivery/ indefinite-quantity contract modification to provide AIM-9X Sidewinder mission support and sustainment. Customers include the USAF and US Navy, and the governments of Singapore, Australia, Denmark, Finland, Turkey, South Korea, Switzerland, Saudi Arabia, and Poland under the Foreign Military Sales Program.
Work will be performed in Tucson, AZ, and is expected to be complete in April 2015. Funds will be committed as individual delivery orders are issued. US NAVAIR in Patuxent River, MD manages the contract (N00019-11-D-0004).
March 31/14: GAO Report. The US GAO tables its “Assessments of Selected Weapon Programs“. Which is actually a review for 2013, plus time to compile and publish. There’s good news and bad news for the AIM-9X:
“The “should-cost” initiative, introduced through DOD’s “Better Buying Power” initiatives, emphasizes the importance of driving cost improvements during contract negotiation and program execution to control costs, improvements that could lead to program efficiencies which increase buying power. For example, the AIM-9X Block II Air-to-Air Missile program realized a procurement cost decrease of approximately $327 million with no change in quantity over the past year and also reported $128 million in “should-cost” savings that are expected in the future.”
“….In July 2013, the Navy suspended operational testing for the AIM-9X Block II due to two issues with missile performance. According to the program office, [target acquisition time] has been resolved with a software fix. However, the root cause for the second issue, related to probability of kill, a key performance requirement, was still under investigation during our review. The program has stopped accepting missiles until the root cause analysis is complete and the program determines what, if any, fixes to those missiles may be needed. The program also expects to delay the full-rate production decision from April 2014 until the second quarter of fiscal year 2015.”
March 4-11/14: Budgets. The US military slowly files its budget documents, detailing planned spending from FY 2014 – 2019. The US Navy is decreasing the planned rate of production over the next few years, but that’s offset somewhat by an increase in USAF orders. The figures have been added to the article’s charts, along with Foreign Military Sale figures from those same documents. Note that export sales figures can be expected to rise as we come closer to any specific year, and new countries decide to place orders. Sources: USN, PB15 Press Briefing [PDF] | USAF, Fiscal Year 2015 Budget Overview.
FY 2013
Lot 13 order for USA, Kuwait, Malaysia, Morocco, Oman, Saudi Arabia, and Switzerland; Export requests from Turkey & the Netherlands; Multinational support contract; GAO report.
Sept 26/13: Belgium. The US DSCA announces Belgium’s formal request to buy 40 AIM-9X-2 Sidewinder Block II All-Up-Round Missiles, 36 CATM-9X-2 Captive Air Training Missiles, 2 CATM-9X-2 Block II Missile Guidance Units, and 10 AIM-9X-2 Block II Tactical Guidance Units, 4 Dummy Air Training Missiles, plus containers, missile support and test equipment, spare and repair parts, personnel training and training equipment, publications and technical data, and US Government and contractor support. The estimated cost is up to $68 million.
The Belgian Air Component cooperates with the Royal Netherlands Air Force, which operates the same F-16 MLUs and also has an AIM-9X-2 request underway. Even so, a future contract will require some level of additional US government and contractor support. A successful deal is expected to cement the Belgian military’s status as the world’s best-armed pension fund. Sources: US DSCA.
DSCA: Belgium request
Sept 18/13: A $10.3 million cost-plus-fixed-fee, firm-fixed-price contract for AIM-9X Block II Engineering Analysis, including program protection implementation plans, technical studies, and services. $6.3 million is committed immediately.
Work will be performed in Tucson, AZ and is expected to be complete in March 2014. Oddly, the Pentagon release divides the award on multiple occasions as being between the USAF ($8.65M / 84%) and the US Army ($1,648,129 / 16%). Unless the Army is working to adapt the missile to the top-tier AFPS upgrade for its Avenger mobile air defense systems, the US Navy would be the logical 2nd service (N00019-12-C-2002).
Aug 12/13: FY 2013. A $200.5 million firm-fixed-price, fixed-price-incentive-firm target contract modification for FY 2013 procurement of 354 AIM-9X Block II All Up Round missiles and Active Optical Target Detectors, 20 spare Tactical Guidance Units, 3 spare Advanced Optical Target Detectors, 3 spare Propulsion Steering Sections, 1 spare Inertial Measuring Unit, 178 Block II Captive Air Training Missiles, 26 spare Captive Air Training Missile Guidance Units, 9 Special Air Training Missiles, 147 All Up Round Containers, 19 Guidance Unit Containers, and 1 spare Missile Tube Assembly. All funds are committed immediately (N00019-11-C-0001). Customers include:
USAF ($52.45 million, 26.16%)
- 92 AIM-9X Block II missiles
- 4 spare Tactical Guidance Units
- 2 spare Advanced Optical Target Detectors
- 1 spare Propulsion Steering Section
- 58 CATM-9X Block IIs
- 8 spare Captive Air Training Missile Guidance Units
- 39 All Up Round missile containers
USN ($54.7 million, 27.27%)
- 92 AIM-9X Block II missiles
- 4 spare Tactical Guidance Units
- 1 spare Advanced Optical Target Detector
- 1 spare Propulsion Steering Section
- 58 CATM-9X Block IIs
- 4 spare Captive Air Training Missile Guidance Units
- 9 Special Air Training Missiles
- 43 All Up Round missile containers
Kuwait ($40.2 million, 20.04%)
- 80 AIM-9X Block II missiles
- 2 spare Tactical Guidance Units
- 20 CATM-9X Block IIs
- 2 spare Captive Air Training Missile Guidance Units
- 28 All Up Round missile containers
- 6 Guidance Containers
Malaysia ($11.5 million, 5.71%)
- 20 AIM-9X Block II missiles
- 2 spare Tactical Guidance Units
- 8 CATM-9X Block IIs
- 4 spare Captive Air Training Missile Guidance Units
- 8 All Up Round missile containers
- 6 Guidance Containers
Morocco ($12 million, 5.97%)
- 20 AIM-9X Block II missiles
- 2 spare Tactical Guidance Units
- 1 spare Propulsion Steering Section
- 1 spare Missile Tube Assembly
- 10 CATM-9X Block IIs
- 4 spare Captive Air Training Missile Guidance Units
- 9 All Up Round missile containers
Oman ($28.8 million, 14.37%)
- 50 AIM-9X Block II missiles
- 6 spare Tactical Guidance Units
- 24 CATM-9X Block IIs
- 4 spare Captive Air Training Missile Guidance Units
- 19 All Up Round missile containers
- 7 Guidance Containers
Saudi Arabia ($880,023, 0.44%)
- 2 Special Air Training Missiles
- 1 All Up Round missile container
Switzerland ($76,400, 0.04%)
- 2 Special Air Training Missiles
- 1 spare Inertial Measuring Unit
Work is expected to be complete in August 2015, and will be performed in Tucson, AZ (43.74%); Andover, MA (10.08%); Valencia, CA (6.10%); Rocket Center, WVA (5.49%); Vancouver, WA (5.07%); Goleta, CA (2.86%); Cheshire, CT (2.05%); Simsbury, CT (1.61%); Cincinnati, OH (1.22%); San Jose, CA (1.48%); Anniston, AL (1.31%); Chatsworth, CA (1.11%); San Diego, CA (1.04%); Montgomery, AL (0.60%); Orlando, FL (0.55%); Valencia, CA (0.53%); Newbury Park, CA (0.50%); El Segundo, CA (0.50%); Claremont, CA (0.43%); Joplin, Mo. (0.39%); Lombard, IL (0.28%); El Cajon (0.15%); Midland, Ontario, Canada (5.54%); Heilbronn, Germany (1.88%); Maniago, Italy (1.21%); and other various locations inside and outside the United States (4.28%).
Lot 13 order: USA, Kuwait, Malaysia, Morocco, Oman, Saudi Arabia, and Switzerland
Aug 24/12: Upgrades. Military & Aerospace Electronics reports that Raytheon has received a minor sole-source contract to begin developing AIM-9X upgrades. Longer range and an insensitive warhead that burns rather than exploding if subjected to hot fires are reportedly the priorities.
July 18/13: Block 3 plans. Flight Global reports that US NAVAIR is pushing for an AIM-9X Block III, with a 60% range boost from a new rocket motor and better flight programming. That would push the AIM-9X farther into comparable territory to France’s MICA, a medium-range missile with radar and IR-guided versions. The other major change would be an insensitive munitions warhead, for safer use at sea, per the Aug 24/12 entry.
US NAVAIR intends to launch the Block III’s EMD development phase in 2016, developmental testing in 2018, and operational tests in 2020, followed by Initial Operational Capability in 2022.
Part of the reported justification for Block III involves the proliferation of digital radar jammers on enemy fighters, which lowers the AIM-120 AMRAAM’s odds of a successful radar lock and strike. NAVAIR doesn’t say it, but the F-35′s provision for just 2 internal air-to-air missiles forces all weapon options to be more versatile – which sometimes means more expensive. Unfortunately, programs like the “Triple Target Terminator” were seen as too expensive. Raytheon’s NCADE was another alternative, which would have placed a larger AIM-9X seeker on an AMRAAM missile. NCADE offered even longer range air warfare strikes, some capability against launching ballistic missiles, and no additional integration work for AMRAAM-qualified planes, but the US military hasn’t pursued it.
May 31/13: Support. A $19.6 million modification to a previously awarded cost-plus-fixed-fee, firm-fixed-price contract for the design and engineering analysis of the AIM-9X Block II Missile System for the U.S. Navy ($8.3 million / 42.6%), the U.S. Air Force ($5.7 million/ 29%), and the Government of Saudi Arabia ($5.6 million / 28.4%). $7.5 million in American and Saudi funds are committed immediately.
Work will be performed in Tucson, AZ (96%); Andover, MA (3%); and various locations inside and outside of the United States (1%), and is expected to be complete in June 2014 (N00019-12-C-2002).
May 22/13: South Korea. The US DSCA forwards South Korea’s official weapons export request for up to $823 million worth of weapons to equip F-15SE Silent Eagles [PDF], or up to $793 million in weapons for F-35As [PDF], if either plane is picked as the winner of the F-X-3 fighter competition. The AIM-9X Block II is common to both requests, and involves 154 missiles, 14 spare tactical guidance units, 33 CATM training missiles, and 7 spare CATM guidance units.
Their competitor, EADS’ Eurofighter, isn’t integrated with the AIM-9X. It would either use the ROKAF’s existing stocks of previous-generation AIM-9 Sidewinders, or trigger a separate purchase of the AIM-9X equivalent IRIS-T or ASRAAM.
April 15/13: SIP. An $8.6 million modification to a previously awarded cost-plus-fixed-fee contract services in support of the Phase II AIM-9X System Improvement Program for the USAF ($5.5M/ 64%), US Navy ($1.7M/ 19.77%), and the government of Saudi Arabia ($1.4M/ 16.23%), including hardware and software development activities and implementation of security architecture requirements.
Work will be performed in Tucson, AZ using FY 2012 Navy RDT&E and FY 2013 USAF RDT&E budgets. and is expected to be complete in March 2014. $4 million is committed immediately, $529,748 of which will expire at the end of the current fiscal year on Sept 30/13 (N00019-11-C-0026).
April 4/13: Singapore. The US DSCA announces [PDF] that Singapore has requested export clearance for 20 AIM 9X-2 SIDEWINDER Block II All Up Round Missiles, 8 CATM-9X-2 Captive Air Training Missiles, 5 CATM-9X-2 Block II Missile Guidance units, 2 AIM-9X-2 Block II Tactical Guidance units, containers, spare and repair parts, support and test equipment, publications and technical documentation, personnel training and training equipment, U.S. Government and contractor engineering, technical and logistics support services, and other related elements of logistical and program support.
The prime contractor is Raytheon in Tucson, AZ, of course, and the cost is estimated at up to $36 million. Singapore has already purchased AIM-9X-2s, and they won’t need any additional support.
Singapore request
March 28/13: GAO Report. The US GAO tables its “Assessments of Selected Weapon Programs” for 2013. Which is actually a review for 2012, plus time to compile and publish. GAO cites the AIM-9X Block II as a ready program, with mature critical technologies and a stable design.
The biggest issue is production processes, which are described as “not in control,” with the missile a bit below expected reliability targets. The program plans to demonstrate process control before the 2014 full-rate production decision. GAO adds that:
“The program expects to realize over $595 million in cost savings over the life of the program by implementing “should cost” initiatives, such as improvements to the design and production of key missile components…. The program office estimated that it has already realized $21 million in savings on the first low-rate initial production contract. To achieve these savings, the program office analyzed cost drivers and prioritized opportunities to reduce cost by considering factors such as the up-front investment costs, ease of implementation, time to realize savings, and magnitude of the unit cost benefits. The program has implemented technical initiatives, such as active optical target detector design and production improvements and non-technical initiatives, such as accelerated production rates.”
March 25/13: Support. A $20.1 million indefinite-delivery/ indefinite-quantity contract modification to provide AIM-9X Sidewinder mission support and sustainment activities for the USAF, US Navy, and the governments of Singapore, Australia, Denmark, Finland, Turkey, South Korea, Switzerland, Saudi Arabia, and Poland under the Foreign Military Sales program. This support includes both Block I and Block II missiles.
Work will be performed in Tucson, AZ, and is expected to be complete in March 2014. Funds will be obligated on individual delivery orders as they are issued (N00019-11-D-0004).
Jan 17/13: DOT&E Testing Report. The Pentagon releases the FY 2012 Annual Report from its Office of the Director, Operational Test & Evaluation (DOT&E). With respect to the AIM-9X Block II, the services had accomplished 5,460 total captive-carry hours as of mid-November 2012, with 23 failures. That’s a Mean Time Between Captive-Carry Failure (MTBCCF) of 237 hours. The goal is 1 per 500 hours by 80,000 flight hours, and the missile is slightly below that expected growth curve.
In testing, 8/12 missile shots have been successful, and at least 2 of the failures have involved lock-on after launch mode. A 3rd failure involved the fuze. Those failures are being investigated, and the USAF has a concern involving Helmet-less High Off-Boresight (HHOBS, means wide-angle pickup with no JHMCS helmet) performance. They believe that Block II is slower to acquire targets in HHOBS than Block I was, instead of being equal or better.
Dec 24/12: Turkey. The US DSCA announces [PDF] Turkey’s official request to buy AIM-9X Block II Sidewinder missiles and associated equipment, as part of a larger modernization drive for the country’s fighter fleet. Raytheon Missile Systems Company in Tucson, AZ is the prime contractor, and implementation of this proposed sale will require an unspecified number of U.S. Government or contractor representatives on a temporary basis for support and oversight. The request includes:
- 117 AIM-9X Block II All-Up-Round Missiles
- 6 AIM-9X-2 Block II Tactical Guidance Units
- 6 “Dummy Air Training Missiles” (could be CATMs, or loading practice rounds)
- 130 LAU-129 Launchers
- Plus containers, missile support and test equipment, provisioning, spare and repair parts, personnel training and training equipment, publications and technical data, and support.
Turkey already deploys the AIM-9X Block I. The estimated cost of this contract is up to $140 million, but the exact price will depend on negotiations.
Turkey request: 117
Oct 17/12: Dutch. The US DSCA announces [PDF] the Netherlands’ request to buy AIM-9X-2 Block II Sidewinder missiles and accessories, as an initial order to equip its modernized F-16 MLUs and improve its air defense capabilities. The estimated cost is up to $60 million, but will depend on contract negotiations. The request includes:
- 28 AIM-9X-2 Sidewinder Block II AUR missiles
- 20 CATM-9X-2s
- 2 CATM-9X-2 Block II Missile Guidance Units
- 2 AIM-9X-2 NATMs
- 2 AIM-9X-2 Block II Tactical Guidance Units
- 2 Dummy Air Training Missiles
- Plus containers, missile support and test equipment, provisioning, spare and repair parts, personnel training and training equipment, publications and technical data, and US Government and contractor support.
Raytheon Missile Systems Company in Tucson, AZ is the prime contractor, and implementation of this proposed sale will require US Government or contractor representatives in the Netherlands on a temporary basis for program technical support and management oversight.
Dutch request: 20
FY 2012
Purchases by the USA, Morocco, Malaysia, Saudi Arabia, & South Korea; Export requests from Kuwait, Malaysia, Oman; Block II software upgrades for USA.
Aug 31/12: Software. A $13.6 million cost-plus-fixed-fee contract to update AIM-9X software from version 8.220 to 8.300 for USAF ($9.6M/ 71%) and US Navy ($3.9M/ 29%). $5.4 million will expire at the end of the current fiscal year.
As noted above, this software update creates the Block II missile. Work will be performed in Tucson, AZ, and is expected to be complete in December 2013. This contract was not competitively procured pursuant to FAR 6.302-1 (N00019-12-C-0111).
June 13/12: Oman. The US Defense Security Cooperation Agency announces [PDF] Oman’s formal request for 55 AIM-9X Block II Sidewinder All-Up-Round Missiles, 6 spare AIM-9X Block II Tactical Guidance Units, 36 inert AIM-9X Block II Sidewinder Captive Air Training Missiles (CATM) for exercises, 4 spare AIM-9X Block II CATM Guidance Units, 1 Dummy Air Training Missile for loading practice, plus containers, weapon support equipment, spare and repair parts, publications and technical documentation, and other US government & contractor support.
Oman will negotiate with Raytheon Missile Systems in Tucson, AZ is the prime contractor, and the estimated cost is up to $86 million. Implementation of this proposed sale would require multiple trips to Oman involving U.S. Government or contractor representatives for program and technical support, and management oversight.
The RAFO flies 12 compatible F-16C/D Block 50s, and ordered 12 more in December 2011. There’s no point in updating their Jaguars, but in December 2012, they’ll buy some Eurofighter Typhoons to serve as the high end of their air force. The Typhoons are AIM-9 compatible, but only up to the AIM-9M.
Oman request: 55
July 8/12: Morocco. The May 19/11 DSCA request leads to a letter of offer and acceptance (LOA) to buy Raytheon’s AIM-9X Block II short range air-to-air missile for Morocco’s new F-16C/Ds. Numbers and prices are an “undisclosed quantity,” but can be inferred by consulting the DSCA request: 20 + training missiles.
The RMAF will be the 4th country using the Block II version with the added datalink and lock-on after launch capability, after the USA, Saudi Arabia, and South Korea. Raytheon.
Morocco (20?)
March 30/12: The Pentagon’s Selected Acquisitions Report ending Dec 31/11 includes the AIM-9X Block I. It’s being canceled, which creates a critical cost breach – but since the cause is program cancellation, it doesn’t matter. See Jan 17/12 entry for why it’s being cancelled.
“AIM-9X Block I – The Program Acquisition Unit Cost (PAUC) increased 49.3% to the current APB and 71.8% to the original APB as a result of an adjustment to the program of record quantities from 10,142 to 3,142 missiles. Based on direction from Navy and Air Force requirements offices, there are no future production contracts for Block I after Lot 10 deliveries are complete. The approval of Block II to enter Low Rate Initial Production ends new production for Block I missiles, and shifts new production to Block II missiles. Since the critical Nunn-McCurdy breach is due to cancellation of the Block I program, no certification determination by the USD AT&L is required pursuant to section 2433 of title 10, United States Code.”
Block I done
March 30/12: ROKAF & RSAF. A $97.1 million firm-fixed-price, fixed-price-incentive-firm target contract modification, buying Lot 12 low rate initial production (LRIP-2) equipment for South Korea and Saudi Arabia.
South Korea: $11.8 million, 12.15%. 19 AIM-9X Block II AUR missiles; 5 more containers. This is test-size lot.
Saudi Arabia: $85.3 million, 87.85%. 120 AIM-9X Block II AUR missiles; 42 more containers; 33 Block II CATMs. Saudi Arabia’s huge Oct 20/10 DSCA request to upgrade and grow its F-15 Strike Eagle fleet included 300 AIM-9X missiles, 25 CATMs, and 25 NATMs, but did not specify which AIM-9X block. They already field AIM-9X missiles, which could be compatible with the F-15C/D Eagle air superiority fighters, or their multi-role F-15S Strike Eagles.
Work will be performed in Tucson, AZ. (41.40%); Andover, MA (10.12%); various locations in and outside the continental United States (6.56%); Valencia, CA (5.71%); Midland, Ontario, Canada (5.40%); Rocket Center, WVA (5.24%); Vancouver, WA (5.08%); Goleta, CA (2.99%); El Segundo, CA (2.81%); Cheshire, CT (2.30%); Simsbury, CT (1.60%); Cincinnati, Ohio (1.53%); Heilbronn, Germany (1.52%); El Cajon, CA (1.48%); San Jose, CA (1.45%); Anniston, AL (1.16%); San Diego, CA (0.87%); Chatsworth, CA (0.80%); Newbury Park, CA (0.74%); Orlando, Fla. (0.66%); and Montgomery, AL (0.58%). Work is expected to be completed in August 2014. US Naval Air Systems Command in Patuxent River, MD acts as the agent for its Foreign Military Sale clients (N00019-11-C-0001).
Lot 12: Singapore (19) & Saudi Arabia (120)
March 27/12: Exports. US NAVAIR discusses the AIM-9X’s “heightened interest in foreign military sales (FMS),” and what that means for the USA:
“The future is bright for the AIM-9X program as robust international sales lower the procurement costs for all purchasers, including the U.S. government,” said Rick Cooley deputy program manager for international programs for the Navy’s Air-to-Air Missile program office (PMA-259) here. In recent years, international sales for the joint Navy and Air Force AIM-9X Sidewinder program have comprised almost half [emphasis DID's] of the program’s production. The Sidewinder is the most widely used air-to-air missile currently employed by more than 40 nations throughout the world.
In a surge of FMS agreements in late December 2011, Saudi Arabia and South Korea became the first international purchasers of the latest generation of the Sidewinder family, the infrared-guided AIM-9X-2 (Block II) missile system, for employment on their unique F-15 aircraft. “
Feb 27/12: Kuwait. The US DSCA announces [PDF] Kuwait’s official request to buy up to 80 AIM-9X-2 Sidewinder Block II AUR Missiles, 26 CATM AIM-9X-2s, 2 CATM Block II Missile Guidance Units, 8 AIM-9X-2 Block II Tactical Guidance Units, 2 Dummy Air Training Missiles; plus containers, missile support and test equipment, provisioning, spare and repair parts, personnel training and training equipment, and US Government and contractor support. The estimated cost is up to $105 million.
The prime contractor will be Raytheon Missile Systems Company in Tucson, AZ, and implementation of this proposed sale will require an undetermined number of US Government or contractor representatives.
Kuwait flies 35 F/A-18C/Ds, and is considering how to replace them. All non-American competitors would be unable to use the AIM-9X without custom integration work.
Kuwait request: 80
Jan 31/12: Lot 12 additional. A $39.6 million firm-fixed-price, fixed-price-incentive-firm target contract modification to AIM-9X Lot 12 low rate initial production. It adds “special test equipment and various spare components,” plus…
USAF ($35.5 million, 89.57%)
- 42 AIM-9X Block II all up round missiles (now 108)
- 42 Block II active optical target detectors (now 108)
- 51 CATM-9X Block II, with no motor or warhead (now 51)
- 27 containers (now 45)
US Navy ($4.1 million, 10.43%)
- 5 AIM-9X Block II all up round missiles (now 54)
- 5 Block II active optical target detectors (now 54)
- 2 containers (now 26)
Work will be performed in Tucson, AZ (41.42%); Andover, MA (10.12%); various locations in the continental United States (6.31%); Valencia, CA (5.71%); Ontario, Canada (5.40%); Rocket Center, WVA (5.24%); Vancouver, WA (5.08%); Goleta, CA (2.99%); El Segundo, CA (2.81%); Cheshire, CT (2.30%); Simsbury, CT (1.60%); Cincinnati, OH (1.53%); Heilbronn, Germany (1.52%); El Cajon, CA (1.48%); San Jose, CA (1.45%); Anniston, AL (1.16%); San Diego, CA (0.87%); Chatsworth, CA (0.80%); Newbury Park, CA (0.74%); Orlando, FL (0.66%); Montgomery, AL (0.58%); and various location outside the continental United States (0.23%), and is expected to be complete in January 2014 (N00019-11-C-0001).
Lot 12 order
Jan 17/12: DOT&E testing report. The Pentagon releases the FY 2011 Annual Report from its Office of the Director, Operational Test & Evaluation (DOT&E). The AIM-9X is included, and the report reveals that the Navy has asked to re-baseline the AIM-9X Block II as a new program entering a pre-Milestone C decision. When it does pass Milestone C, production of the Block I missile will end.
“This decision was primarily driven by a cost per unit increase due to the new DSU-41/B AOTD fuze/datalink assembly, reductions in Service funding, software costs, and schedule delays.”
DOT&E’s one serious concern:
“Recent captive-carry testing has revealed declining missile reliability due to communication problems in 9.303 software and host aircraft compatibility deficiencies. The program office plans to fix these deficiencies, along with software changes in OFS 9.308. Raytheon plans another software build prior to the [Operational Test Readiness Review]… in April 2012. The schedule of live fire events required before the OTRR is aggressive; the Navy and Air Force must execute five more live flight tests prior to the OTRR. Testing delays could result in a delayed OTRR.”
Dec 29/11: Lot 12 Main. A $68.9 million firm-fixed-price, fixed-price-incentive-firm target contract modification, for Lot 12 low rate initial production of AIM-9X Sidewinder short range missiles. Customers and ordered items include…
USAF ($36 million, 52.3%)
- 66 AIM-9X Block II AUR missiles
- 66 Block II active optical target detectors
- 18 containers
US Navy ($32.8 million, 47.7%)
- 49 AIM-9X Block II AUR missiles
- 49 Block II active optical target detectors
- 29 CATM AIM-9X Block II, with no motor or warhead
- 24 containers
Work will be performed in Tucson, AZ (41.42%); Andover, MA (10.12%); various locations in the continental United States (6.31%); Valencia, CA (5.71%); Ontario, Canada (5.40%); Rocket Center, WVA (5.24%); Vancouver, WA (5.08%); Goleta, CA (2.99%); El Segundo, CA (2.81%); Cheshire, CT (2.30%); Simsbury, CT (1.60%); Cincinnati, OH (1.53%); Heilbronn, Germany (1.52%); El Cajon, CA (1.48%); San Jose, CA (1.45%); Anniston, AL (1.16%); San Diego, CA (0.87%); Chatsworth, CA (0.80%); Newbury Park, CA (0.74%); Orlando, FL (0.66%); Montgomery, AL (0.58%); and various location outside the continental United States (0.23%), and is expected to be complete in January 2014 (N00019-11-C-0001).
Lot 12 order
Nov 8/11: Malaysia. The US Defense Security Cooperation Agency announces [PDF] Malaysia’s official request for 20 AIM-9X-2 All-Up-Round Missiles, 8 CATM-9X-2 Captive Air Training Missiles with no rocket motor or warhead, 4 CATM-9X-2 Block II Missile Guidance Units, 2 AIM-9X-2 Block II Tactical Guidance Units, 2 Dummy Air Training Missiles, containers, missile support and test equipment, provisioning, spare and repair parts, personnel training and training equipment, publications and technical data, and other U.S. Government and contractor support.
If the sale is not blocked by Congress, and a contract is signed, the prime contractor will be Raytheon Missile Systems Company in Tucson, AZ. Implementation of this proposed sale will require travel of U.S. Government or contractor representatives to Malaysia on a temporary basis for program technical support and management oversight.
Malaysia request: 20
FY 2011 and Earlier
From program start to Milestone C; Initial US orders in Lot 10 & 11; Export requests from Morocco & UAE.
Sept 29/11: Lot 11. The $61.9 million Lot 11 order is placed. It includes:
USAF ($34.5 million, 55.83% of the order)
- 30 AIM-9X Block II AUR missiles
- 40 CATM AIM-9X Block IIs
- 30 active optical target detectors
- 20 additional containers for the missiles
- Associated tooling
US Navy ($27.3 million, 44.17% of the order)
- 30 AIM-9X Block II AUR missiles
- 20 CATM AIM-9X Block IIs
- 30 active optical target detectors
- 14 additional containers for the missiles
- Associated tooling
Work will be performed at Raytheon Missile Systems in Tucson, AZ (39.85%); Andover, MA (14.36%); Midland, Ontario, Canada (6.60%); Vancouver, WA (6.21%); various locations inside the continental United States (5.89%); Goleta, CA (4.04%); Rocket Center, WVA (2.95%); Valencia, CA (2.81%); Heilbronn, Germany (2.20%); El Cajon, CA (2.13%); Cheshire, CT (2.03%); Chatsworth, CA (1.89%); Cincinnati, Ohio (1.80%); San Jose, CA (1.60%); Montgomery, Ala (1.40%); Anniston, AL (1.18%); Newbury Park, CA (1.08%); San Diego, CA (0.94%); Orlando, FL (0.77%); and various locations outside the continental United States (0.27%). Work is expected to be complete in April 2013. This contract was not competitively procured pursuant to FAR 6.302.1, as Raytheon is the only source (N00019-11-C-0001).
Lot 11 order
Sept 1/11: Testing. US NAVAIR finishes a pair of successful live fire AIM-9X Block II test missions by VX-31 Squadron at Naval Air Warfare Center Weapons Division in China Lake, CA. Both missions achieve their objectives, which makes the new missile 9/9 in tests so far.
Both F/A-18 test missions involve a jet-powered BQM-74 target drone. The 1st kill involved the drone flying at low altitudes over the desert, approaching “at an extended beyond visual range.” The second kill had the test pilot flying at 1,000 feet below clouds, with the target above the clouds. NAVAIR was equally pleased by the new GPS-enabled AN/DKT-89-3 Airborne Telemetry Equipment inside, which was designed and built by the government team in China Lake. Instead of having to estimate how close the missile came to the target, they now know.
The AIM-9X Block II was approved for Milestone C / low rate initial production in June 2011, and is scheduled to enter operational test in spring 2012. US NAVAIR.
June 2011: Milestone C. AIM-9X Block II is approved for low-rate initial production. Source: GAO.
Milestone C/ LRIP
May 19/11: AIM-9X missile request. The US DSCA announces [PDF] Morocco’s official request to buy 20 AIM-9X Block II Sidewinder short range air-to-air missiles, plus 10 CATM-9X-2 Captive Air Training Missile All-Up-Rounds (missiles with seekers and wiring, but no motor, in their case), 8 CATM-9X-2 Missile Guidance Units, 8 AIM-9X-2 Block II Tactical Guidance Units, 2 Dummy Air Training Missiles, plus containers, missile support and test equipment, provisioning, spare and repair parts, personnel training and training equipment, publications and technical data, and other forms of U.S. Government and contractor support.
Morocco’s July 9/08 DSCA request for F-16s involved AIM-9Ms, which still equip many American aircraft and are inferior to the Vympel R-73/AA-11 Archer missiles flown on Algerian fighters. This initial number of AIM-9X missiles would give the RMAF’s new F-16s enough missiles to train with, and field a very preliminary operational capability to match their neighbor’s.
The estimated cost is up to $50 million, with exact totals to be negotiated if a contract is signed with prime contractor Raytheon Missile Systems in Tucson, AZ. Implementation of this proposed sale will require travel of U.S. Government or contractor representatives to Morocco on a temporary basis for program technical support and management oversight, but the DSCA has no estimate of how many yet.
Morocco request: 20
April 19/11: The US Defense Security Cooperation Agency announces [PDF] the United Arab Emirates’ formal request to buy 218 AIM-9X Block II Sidewinder short-range air-to-air missiles, another 18 AIM-9X-2 WGU-51/B Tactical Guidance Units, 40 CATM-9X-2 Captive Air Training Missiles (CATMs) without rocket motors, another 8 CATM-9X-2 WGU-51/B Guidance Units, 8 Dummy Air Training Missiles for loading practice and such, plus containers, support and test equipment, spare and repair parts, publications and technical documentation, personnel training and training equipment, and other forms of U.S. Government and contractor engineering and logistics support.
The AIM-9X isn’t a fit for their Hawks or Mirage 2000s, so the UAE’s F-16E/F Desert Falcon fleet is their sole realistic deployment option. The UAE already fits earlier-model Sidewinders to its F-16 fleet, and the DSCA doesn’t believe that they’ll have any difficulty absorbing these newer-model missiles. The estimated cost is up to $251 million, but exact amounts must wait until/if a contract is negotiated with Raytheon Missiles Systems in Tucson, AZ.
UAE request: 218
June 28/10: Lot 10. $128.6 million in contracts for Lot 10 production. The contracts were announces as 2 separate orders, even though they took place under the same contract number (N00019-09-C-0061), and were both managed by US Naval Air Systems Command in Patuxent River, MD. The first order was for the USAF and ROKAF. The second order covered the US Navy, RAAF, ROKAF and RSAF. Totals and percentages below are amalgamated.
For the USAF ($60.2 million, 46.82%):
- 65 Block I all-up-round tactical missiles
- 15 Block I NATM special air training missiles
- 21 Block II NATM special air training missiles
- 7 Block II CATM training missiles
- 5 Block I guidance units
- 15 Block II guidance units
- 7 Block II Active Optical Target Detectors
- 6 Block I propulsion steering sections
- 30 missile containers
- Associated tooling and test equipment
For the US Navy ($35.7 million, 27.82%):
- 54 Block I all-up-round tactical missiles
- 4 Block I propulsion steering sections
- 15 Block II NATM special air training missiles
- 4 Block II CATM training missiles
- 7 Block II guidance units
- 3 Block II Active Optical Target Detectors
- Associated tooling and test equipment
Australia and Singapore also have pieces of this contract, but they’re for Block I equipment.
Lot 10 order: USA, Australia, Singapore.
Sept. 2007: CDR. Critical Design Review held and passed. Source: GAO.
March 2007: PDR. Preliminary Design Review held and passed. Source: GAO.
2004: Program start. Source: GAO.
Additional Readings
Background: AIM-9 Sidewinder
- Raytheon – AIM-9X.
- USAF – AIM-9 Sidewinder. Describes the different versions from AIM-9A to X.
- US NAVAIR – Sidewinder.
- Defence Today, via Air Power Australia (March 2009) – Post Cold War Air to Air Missile evolution [PDF].
- Australian Aviation, via Air Power Australia (April 1994) – The Sidewinder Story: The Evolution of the AIM-9 Missile. covers previous generations to AIM-9M, but not the AIM-9X.