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PAC-3 Edge Will Be The Most Capable Patriot Interceptor Ever

Lockheed Martin has unveiled the PAC-3 Edge, a new interceptor that would represent the top tier of the U.S. Army’s Patriot air defense missile family. The missile is being developed to deliver greater performance against advanced threats than the current PAC-3 Missile Segment Enhancement (MSE), as the Army advances a competition for its next-generation interceptor.

The PAC-3 Edge displayed at the Association of the U.S. Army’s (AUSA) main annual convention. Howard Altman

The company says PAC-3 Edge will offer improved performance against increasingly challenging aerial threats, including advanced ballistic and hypersonic missiles. The design builds on the PAC-3 MSE’s existing technology while incorporating a new seeker, an upgraded control system, and a more advanced solid rocket motor developed with Northrop Grumman.

In terms of appearance, PAC-3 Edge differs significantly from the PAC-3 MSE. It does away entirely with the mid-body strakes. The missile body also lacks the distinctive tapered section that separates the narrower forward section from the broader rear section on the MSE version.

An overview of the improvements found on the PAC-3 MSE variant over its predecessors. Lockheed Martin

Lockheed announced on October 9 that it had been selected to advance to the next phase of the Army’s Future Interceptor program. Company officials said testing is expected to begin in 2027, with initial deployment targeted for 2031.

The Army’s selection of Lockheed and another unnamed competitor marks a significant development in the service’s effort to improve the Patriot system’s ability to deal with more sophisticated threats. The Army previously abandoned its Lower-Tier Future Interceptor (LTFI) program in 2024, citing cost concerns, and instead emphasized incremental improvements to the existing PAC-3 MSE. The subsequent emergence of the Future Interceptor competition points to renewed interest in a more substantial leap in capability.

A PAC-3 interceptor seen at the moment of launch. U.S. Department of Defense

A More Capable Patriot Interceptor

PAC-3 Edge is intended to preserve the advantages of the existing PAC-3 family while improving the missile’s ability to engage targets at longer ranges and higher altitudes.

One of the central changes is a new seeker being developed by Lockheed Martin’s Strigo Product Center. The company says the technology will improve target detection and tracking, helping the interceptor deal with more demanding threats. The company has not disclosed the seeker’s technical details, but one possibility is a dual-mode or multimode configuration, combining different sensing methods to improve target acquisition and tracking in challenging conditions. Such an approach could help an interceptor maintain a reliable track against maneuvering targets and better distinguish real threats from decoys or other countermeasures.

Tim Cahill, president of Missiles and Fire Control (MFC) for Lockheed Martin, told TWZ that the same seeker technology that will be used in PAC-3 Edge will also find its way into future offensive and defensive systems going into the future. “So it isn’t just a one single seeker solution, but it will be a family of seekers that will operate across a number of regimes,” Cahill explained. “Frankly, I’d like to not tell everybody exactly what we’re doing, but it is clearly different from what is out there right now,” Cahill said, adding that hardware assemblies and components are now being tested in the lab, and that seekers have been flown on aircraft testbeds.

The missile will also use a three-pulse (as opposed to two-pulse) solid rocket motor designed by Northrop Grumman. Unlike a conventional motor that provides most of its thrust in a single sustained burn, a multi-pulse design can deliver thrust at different points during flight. That can help preserve energy for the terminal engagement, when an interceptor may need to maneuver aggressively to reach a target.

Lockheed says the combination of the new seeker, propulsion system, and control system improvements will provide greater maneuverability and improve performance at extended ranges and higher altitudes. To ensure greater agility, Jason Reynolds, vice president and general manager of Integrated Air and Missile Defense (IAMD) at Lockheed Martin, explained that the new missile adds a greater number of more capable attitude control motors (ACMs), compared to the PAC-3 MSE. These small thrusters ring the missile’s forward body.

The new characteristics could be particularly important against maneuvering ballistic missile warheads and hypersonic weapons, which can pose difficult interception problems because of their speed, altitude and dynamic flight profiles. However, the company has yet to demonstrate PAC-3 Edge’s performance in flight testing.

The extent to which PAC-3 Edge could overlap with, or potentially augment, the capabilities of the Army’s Terminal High Altitude Area Defense (THAAD) system also remains unclear. THAAD is designed to intercept ballistic missiles at higher altitudes and longer ranges than Patriot, where midcourse window bleeds into the terminal intercept window. If PAC-3 Edge delivers a substantial improvement in engagement range and altitude over PAC-3 MSE, it could potentially provide at least some backfill for THAAD.

The announcement did not provide detailed performance figures for the new interceptor, including its maximum engagement range, speed, or specific target set. It also did not establish how much better the missile will perform than the PAC-3 MSE in operational conditions.

Addressing An Air Defense Force Under Pressure

The Army has a pressing need to improve its air and missile defense capabilities while expanding the number of interceptors available to its forces.

TWZ has been reporting on the strain facing the Patriot force and its interceptor supply for years. In July 2025, we reported on the Army’s plan to expand its Patriot air defense force by roughly a quarter, adding four battalions as the service sought to meet growing operational demands. More recently, we have detailed the challenges of replenishing interceptors after intensive combat operations, including the scale of U.S. missile and drone engagements in the Middle East, as well as transfers to Ukraine.

Related to this, the push for a more capable Patriot interceptor comes as the system faces increasingly sophisticated threats and adversaries that have learned from years of combat. Russia has improved its ballistic missile tactics to pierce the Patriot’s protective umbrella, while Iran has demonstrated ways to exploit gaps in layered missile defenses, including introducing extremely high-speed ballistic missiles and cluster warheads that open at high altitude.

UNSPECIFIED, UKRAINE - AUGUST 4: A Patriot system received by Ukraine is seen on the Day of Ukrainian Air Force on August 4, 2024 in Unspecified, Ukraine. At the event for the Day of Ukrainian Air Force with the participation of President of Ukraine Volodymyr Zelenskyi, the first General Dynamics F-16 Fighting Falcons received by Ukraine were demonstrated. (Photo by Vitalii Nosach/Global Images Ukraine via Getty Images)
A Patriot system received by Ukraine is seen on the Day of Ukrainian Air Force on August 4, 2024, at an unspecified airbase in Ukraine. Photo by Vitalii Nosach/Global Images Ukraine via Getty Images VITALII NOSACH

PAC-3 MSE is currently the most advanced operational member of the PAC-3 family. It is designed primarily as a hit-to-kill interceptor, destroying targets through the force of direct impact, but it also incorporates a small explosive charge known as a “lethality enhancer,” as TWZ has previously detailed.

PAC-3 Edge is intended to push those capabilities further still. Lockheed says the new missile is being designed to work within the Army’s existing and future integrated air and missile defense architecture, including the Integrated Battle Command System (IBCS) and the M903 Patriot launcher. The company has also identified containerized launchers and HIMARS Flex among the systems with which it intends to integrate the interceptor.

A graphic showing various load configurations for the M903 launcher, as compared to the previous M901 and M902 launchers. Lockheed Martin

Such compatibility could allow the service to retain much of its existing infrastructure while improving the performance of the weapons used within it.

The precise extent of that compatibility, however, will depend on development, testing, and integration work that remains ahead.

Production And Cost

Lockheed is developing PAC-3 Edge as the company and the Pentagon work to expand production of the existing PAC-3 MSE.

In January, Lockheed Martin announced a seven-year agreement with the Pentagon to more than triple annual PAC-3 MSE production capacity, initially targeting an increase from roughly 600 interceptors to 2,000 a year. The effort subsequently received a major funding boost in July, when the U.S. government awarded Lockheed a contract modification worth up to $53.86 billion, bringing the total multiyear contract value to $58.62 billion. Lockheed says the effort is intended to more than triple production by the end of 2030, while expanding its workforce and investing in manufacturing infrastructure and its supply chain.

Those efforts could provide a foundation for producing PAC-3 Edge if the missile completes development and enters service. Lockheed has said the new interceptor will be manufactured on its existing PAC-3 production line in Camden, Arkansas, with factory modernization expected to support the eventual transition.

PAC-3 MSE in production in Camden, Arkansas. Lockheed Martin

The company has also highlighted substantial internal investment in the new missile and its seeker technology. That investment could reduce development risk and give Lockheed greater control over critical components, although the program’s final cost and production schedule remain important unknowns.

The broader challenge is not simply developing an interceptor with better performance. Advanced missiles can be expensive, and air defense forces must balance the capabilities of individual weapons against the number they can afford to procure and keep available. Sustained combat operations can rapidly consume interceptor inventories, making production rates and replacement costs central considerations.

Cahill says the company has also identified the opportunity to mix and match components between PAC-3 Edge and other missile offerings from Lockheed Martin. “We are getting increasingly modular, and increasingly we’re mixing and matching pieces and parts,” he said.

Ultimately, if it chooses PAC-3 Edge, the U.S. government will decide exactly how to handle production of the PAC-3 MSE and the new missiles. “We would expect the typical thing is you’ll feather them, so you would expect that over time MSEs would come down,” Cahill continued. “We’re still talking, seven, eight, nine, 10 years away. You would expect that the Edge production would go up, but there’s plenty of capacity in the factory to manage whatever surges are going to be needed there.”

At the same time, it should be noted that Lockheed Martin is also working on a lower-cost PAC-3 development, the PAC-3 Adapted Capability Effector (ACE). The company says that this interceptor will cost less than half as much as the PAC-3 MSE, meaning it would have a price tag of around $2.5 million. The company says that the PAC-3 ACE will preserve two-thirds of the capability the PAC-3 MSE had, and it has already generated considerable international interest.

A rendering of the PAC-3 Adapted Capability Effector (ACE). Lockheed Martin

Future Interceptor Competition

Lockheed has confirmed that it is one of two companies selected to continue in the Army’s Future Interceptor competition. The identity of the other competitor has not yet been disclosed, and the Army has not publicly provided a complete account of the competition’s requirements.

The effort follows the cancellation of the earlier Lower-Tier Future Interceptor (LTFI) program, which had involved Lockheed Martin and Raytheon. At the time, the Army opted to focus on upgrades to the PAC-3 MSE and on better integration of its existing air and missile defense systems.

❗Gen Lozano, PEO Missiles & Space, tells @JenJudson that they have cancelled the Lower Tier Future Interceptor program, which would have succeeded the PAC-3 MSE. Instead they will upgrade MSE, and want to move forward with THAAD integration into IBCS. #AUSA2024 pic.twitter.com/NZMPgDH4KP

— Colby Badhwar (@ColbyBadhwar) October 15, 2024

The renewed competition suggests that incremental upgrades alone may not be sufficient to address the Army’s longer-term requirements. The development of faster, more maneuverable missiles and other advanced aerial threats is driving demand for interceptors capable of operating across a wider engagement envelope.

For PAC-3 Edge, which is designed to address emerging threat requirements, the planned 2027 testing start and 2031 deployment target leave substantial development work to complete, including demonstrating the seeker’s performance, validating the propulsion system, and proving the missile’s ability to engage representative targets.

For now, the unveiling establishes the direction Lockheed wants to take the Patriot interceptor family. Whether PAC-3 Edge can deliver the promised increase in performance, while meeting the Army’s cost and production requirements, will become clearer as the program progresses. Regardless, from what is being experienced on the battlefield, a more capable, higher-reaching Patriot would be a very welcome addition to the Army’s Patriot family.

Contact the author: thomas@thewarzone.com

The post PAC-3 Edge Will Be The Most Capable Patriot Interceptor Ever appeared first on TWZ.

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European U740 Variant Of The XQ-58A Valkyrie Has Flown

Airbus and Kratos Defense & Security Solutions have completed the first flight of the U740 Valkyrie uncrewed combat aircraft, a Europeanized version of the XQ-58A Valkyrie, advancing their bid to deliver a combat-ready system to Germany by 2029. The flight comes as the German Air Force, or Luftwaffe, moves toward acquiring a new class of jet-powered combat drones, in what could become a major shift in the country’s traditionally limited armed-uncrewed-aircraft capabilities.

The ride of the Valkyrie ⚔
With the successful first flight of the Airbus U740 Valkyrie in Europe, we are one step closer to introducing an operational uncrewed Collaborative Combat Aircraft (CCA) to the German and other European Armed Forces.
The flight achieved all… pic.twitter.com/S2sFrtdmGA

— Airbus Defence (@AirbusDefence) October 12, 2026

The flight took place at an unnamed test facility in northern Europe, Airbus announced on October 12. The aircraft conducted a rocket-assisted takeoff, maneuvers at different altitudes, and flight at speeds of up to Mach 0.8. The test also included in-flight mission adjustments, with Airbus reporting that all objectives were met.

The U740 Valkyrie uncrewed combat aircraft is prepared for launch. Airbus

The next phase will introduce Airbus’ Multi-platform Autonomous Reconfigurable and Secure (MARS) mission system, which is intended to provide the aircraft’s European-controlled software and mission-management architecture. Airbus says MARS will support autonomous operations and coordination between multiple uncrewed aircraft while retaining human oversight of critical decisions.

The U740 is based on Kratos’ American-developed XQ-58A, an uncrewed aircraft designed as a relatively affordable combat platform. Airbus is adapting the aircraft with its MARS mission system and presenting the combination as a way to provide Germany with a sovereign European capability without waiting for an entirely new airframe to mature.

The U740 Valkyrie on its launch trailer. Airbus

Published performance figures for the U740 include a maximum takeoff weight of around 3,000 kilograms (6,600 pounds). Airbus lists a range exceeding 5,000 kilometers (3,100 miles) and a service ceiling of 45,000 feet. It has an internal weapons bay and external payload stations beneath its wings.

A U.S. Marine Corps XQ-58A Valkyrie conducts a test flight with a U.S. Air Force F-16. U.S. Air Force photo

One distinctive feature is the U740’s rocket-assisted launch capability, which reduces its dependence on conventional runways. The original Valkyrie design is primarily recovered by parachute, but newer versions can take off with rocket assistance and land on a runway, offering greater flexibility in how and where they operate. That could help the Luftwaffe disperse operations or launch aircraft from locations where established airfields are unavailable or under threat. The XQ-58 family has also shown some potential for scaling to different requirements, as detailed in these earlier reports on runway launch and recovery and further platform development. In particular, the U.S. Marine Corps has been exploring ways to expand the XQ-58’s flexibility, including further development of the Valkyrie to meet its own mission requirements.

If adopted, the rocket-assisted launch capability would provide an intriguing throwback to practical German studies during the Cold War, in which F-104G Starfighter fighter-bombers used the Zero-Length Launch (ZELL) system to take off from dispersed locations.

Airbus says the U740 will be able to operate autonomously or under the direction of crewed fighters such as the Eurofighter. The company sees it as a means of increasing the reach, firepower, and survivability of existing combat aircraft, with uncrewed platforms undertaking higher-risk missions.

With the MARS system, Airbus intends to give European customers control over mission applications, data, and key software functions, while enabling autonomous mission execution and coordination between aircraft. This is particularly relevant for Germany, which will likely want to integrate national weapons, sensors, and operational requirements without becoming dependent on a foreign-controlled mission architecture.

The U740 Valkyrie. Airbus

Since the underlying airframe is American, the degree of sovereignty Germany ultimately obtains will depend on the practical ability to control and modify software, integrate national systems, and support the aircraft throughout its service life.

The European flight is an important step for the Valkyrie program, but substantial work remains before it can be considered combat-ready. Mission-system integration, further testing, and the demonstration of effective cooperation with crewed aircraft will be central to meeting the companies’ 2029 target.

Another view of the U740 Valkyrie. Airbus

The effort is also unfolding as Germany develops its requirements for what has been described in press reports as a Jagdbomberdrohne, or fighter-bomber drone. The precise operational concept has yet to emerge publicly, including whether the Luftwaffe primarily wants an uncrewed aircraft to accompany crewed fighters or a platform capable of conducting independent long-range strike missions.

Germany has historically lagged behind several other major military powers in fielding armed uncrewed aircraft. Previous attempts to acquire larger reconnaissance drones encountered major technical and procurement difficulties, while political resistance to armed drones delayed the development of a strike capability for years.

The U740 Valkyrie seen moments after launch. Airbus

The Luftwaffe’s current larger uncrewed aircraft fleet remains limited to five leased Israeli-made Heron TP medium-altitude, long-endurance drones. Germany is also participating in the Eurodrone program, while uncrewed systems were expected to form part of the wider Future Combat Air System (FCAS), before that Franco-German-led effort hit the buffers earlier this year.

German Heron TP 92+52 mit Tiger-Sonderfolierung startet im Rahmen vom NATO Tiger Meet 2024 beim Taktischen Luftwaffengeschwader 51 Immelmann vom Fliegerhorst Jagel, am 27.05.2024. ©Bundeswehr/Ann-Kathrin Steinbring
A German Air Force Heron TP at Jagel Air Base in 2024. Bundeswehr/Ann-Kathrin Steinbring

Russia’s full-scale invasion of Ukraine in 2022 and Germany’s subsequent military buildup have intensified pressure to address these gaps. Berlin has set a goal of being ready for war by 2029, and reports indicate that the Luftwaffe wants a new combat-drone capability on a similarly ambitious timeline.

As well as Airbus and Kratos, the emerging competition reportedly includes Anduril, General Atomics partnered with Germany’s INTEC, as well as Lockheed Martin. Boeing and Rheinmetall are meanwhile pitching the larger, Block 3 version of the Australian-developed MQ-28 Ghost Bat, while Helsing and Hensoldt are pursuing the homegrown CA-1 Europa.

The CA-1 Europa from the German defense startup Helsing. Helsing

The various proposals reflect a broader shift toward uncrewed aircraft that can deliver additional weapons, sensors, and electronic warfare capabilities without putting a pilot at risk. But Germany’s terminology raises an important question about the intended role.

A conventional collaborative combat aircraft, or CCA, would be designed to work alongside crewed fighters, extending their reach and providing additional combat mass. A platform intended to operate independently against targets deep inside enemy territory would place greater emphasis on range and survivability. These roles are not mutually exclusive, but the Luftwaffe’s final requirements will shape the aircraft it chooses.

Germany may not be looking for a single drone to do everything. One option might be a split high-low approach that could pair more capable, longer-range systems for deep-strike missions with cheaper, attritable collaborative combat aircraft that can fly alongside crewed fighters. At this point, it should also be noted that CCAs could also give older fourth-generation fighters a new lease on life, boosting their lethality and survivability by extending their sensor reach, adding weapons capacity, and allowing uncrewed aircraft to take on more dangerous tasks.

Meanwhile, Airbus is also working on its larger U760 Ravenstorm, intended for service in the early 2030s. The Ravenstorm gives Airbus a longer-term path toward a more advanced European-designed uncrewed combat aircraft as it pursues the nearer-term Valkyrie effort.

The Airbus U760 Ravenstorm, a combat drone designed to operate alongside fighter aircraft in air-to-air combat, strike missions, and electronic warfare roles. Airbus

In the short term, the Luftwaffe will need to determine which capabilities must be available in an initial operational fleet and which can be introduced later. Even an aircraft based on an established design requires substantial integration, testing, training, and infrastructure before it can be employed effectively in combat.

Germany’s 2029 target leaves little time for a program that still has to integrate its mission system and demonstrate how the aircraft will be used operationally. That is a particular challenge for the Luftwaffe, which has little experience operating large uncrewed aircraft, let alone jet-powered systems intended for combat.

A rear view of the U740 Valkyrie. Airbus

The European flight gives Airbus and Kratos a head start in testing the U740 for German requirements, but the next major milestone will be flying it with the MARS mission system. How quickly that work progresses will help determine whether the Valkyrie can meet the Luftwaffe’s timetable.

Contact the author: thomas@thewarzone.com

The post European U740 Variant Of The XQ-58A Valkyrie Has Flown appeared first on TWZ.

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Anduril Unveils Steelfin Family Of Modular Surface-To-Air Missiles

Anduril has unveiled Steelfin, a family of surface-to-air interceptor missiles designed to share a common architecture and manufacturing process while being configured for different air and missile defense missions. The company says this approach will enable high-volume production at significantly lower cost than existing weapons, though it has not disclosed prices or detailed performance specifications.

The announcement comes as the U.S. military seeks to expand air defense inventories against an increasingly diverse range of threats, from inexpensive drones to cruise missiles, ballistic missiles, and advanced maneuvering weapons, including hypersonic ones. Recent experiences from Ukraine and the Middle East make it abundantly clear that the challenge is not simply developing interceptors capable of defeating those targets but producing enough of them to sustain operations without exhausting stocks of more expensive weapons.

A company rendering showing the front end of the second stage of one of the Steelfin iterations. Anduril TREVOR DALTON

Using high-end interceptors against comparatively inexpensive threats can rapidly consume limited inventories, as it has in the Middle East, especially, even when engagements are necessary to protect personnel and critical infrastructure. A broader range of defensive weapons, matched to different threats and engagement requirements, could help ease that burden.

Anduril’s answer is a family of missiles built around a common two-stage design. The first stage consists of a booster, while the second is a terminal interceptor intended to share a baseline airframe, avionics, software, flight control system, and interfaces across variants. Different boosters and terminal-stage components would allow the company to tailor individual configurations to specific missions without developing an entirely new missile for each requirement. Both hit-to-kill and blast-fragmentation terminal-stage interceptors will be offered, Anduril says.

“It is an open system, so the ability to fly it with different rocket motors, different seekers, to be able to swap these components out, to be able to reconfigure the system for a range of different threats is a feature that we built into this,” explained Christian Brose, who serves as the president and chief strategy officer at Anduril. He was speaking to members of the media, including TWZ, ahead of the official unveiling of Steelfin.

The rear end of the booster stage of one of the Steelfin missiles. Anduril TREVOR DALTON

The company says the family is intended to cover missions ranging from point defense and lower-tier integrated air and missile defense to upper-tier ballistic missile defense. It also identifies cruise, ballistic, and hypersonic missiles among the threats the broader family is designed to address. Overall, it is an extremely ambitious goal, and something that has not been attempted previously to this degree.

The announcement does not specify which variants would address individual threats or provide engagement envelopes and performance figures with which to assess those claims.

Brose did clarify that the different ranges that the various Steelfin variants will achieve will be based on the booster sizing. “Right now, we’re looking at integrating on 10-inch, 18-inch, and 21-inch boosters, but we’re also looking at quad pack and dual pack for the Mk 41 Vertical Launch System as well for different installations, which imply different range and altitudes.”

A sailor aboard the guided missile destroyer USS Fitzgerald inspects the Mk 41 Vertical Launching System (VLS). U.S. Navy photo by Photographer’s Mate Airman Adam York (RELEASED) A Sailor aboard the guided-missile destroyer USS Fitzgerald (DDG-62) inspects the MK 41 Vertical Launching System (VLS) for water to prevent electrical failure. The MK 41 Vertical Launching System (VLS) is a canister launching system, which provides a rapid-fire launch capability against hostile threats. (U.S. Navy photo by Photographer’s Mate Airman Adam York)

Anduril’s emphasis on commonality is also intended to address the industrial challenges associated with conventional interceptor production. Different missile programs traditionally require specialized tooling, manufacturing processes, suppliers, and facilities, limiting opportunities to shift production rapidly as operational requirements change.

Steelfin variants are intended to use shared production lines and equipment, with mission-specific boosters and terminal-stage components incorporated during final assembly. Anduril says this would allow manufacturing capacity to be redirected toward whichever variant is in greatest demand. The company is planning near-term production on the order of several thousand missiles annually, with capacity designed to expand or shift according to requirements.

That remains a production ambition, and Anduril has not provided a detailed production schedule or contracted quantities demonstrating how quickly it could reach that scale.

The company also says Steelfin is designed to be compatible with existing land- and sea-based launch infrastructure, including the M903A2 launcher used by newer PAC-3 series interceptors, the Mk 41 Vertical Launch System, and Typhon, as well as emerging containerized launchers. It cites compatibility with established fire-control systems, including AEGIS and the Army’s Integrated Battle Command System (IBCS).

A graphic showing various load configurations for the M903 launcher, as compared to the previous M901 and M902 launchers. Lockheed Martin

When it comes to cost, Steve Milano, the lead for Air Dominance & Strike at Anduril, suggested that the “more exquisite version” of the Steelfin would sit somewhere above the PAC-3 MSE and below THAAD, but would accomplish “100 percent of the THAAD mission at a fraction of the cost.” In a different configuration, tailored for the PAC-3-type mission, Steelfin would accomplish 80 percent of that mission at less than 50 percent of the cost, Milano added.

While THAAD is aimed at taking out short, medium, and intermediate-range ballistic missiles in the terminal phase of flight, PAC-3 provides high-altitude, hit-to-kill air and missile defense against tactical ballistic missiles, cruise missiles, and aircraft.

Milano continued: “Looking at the lower end of the spectrum, as far as low-cost interceptors are concerned, I just saw an article on the [aircraft carrier USS Abraham] Lincoln coming back with all of the Shahed markings on the side, and I was contemplating the number of SM-2s that were fired against those assets. When I think of that cost exchange, the Steelfin enters into that market and provides greater than 80 percent of the capability of an SM-2 for a third of the cost.”

For reference, a single THAAD interceptor costs around $15.5 million. The unit price of each PAC-3 MSE interceptor now stands at approximately $5.3 million, according to the Army’s latest proposed budget for the 2027 Fiscal Year. Meanwhile, the price of a single SM-2 Block IIIC interceptor, the most advanced version of that missile currently in service, is around $2.5 million. 

The test launch of a THAAD interceptor.
The test launch of a THAAD interceptor. U.S. Army (U.S. Army)

Steelfin is entering a market in which the U.S. military is already pursuing several approaches to expanding its low-cost interceptor inventory.

In May, the U.S. Army sought industry proposals for a Patriot-compatible interceptor with a target unit cost below $1 million. The effort reflects the service’s desire for a less expensive weapon for appropriate engagements, preserving higher-end interceptors for targets that warrant their cost and capabilities. The Army’s solicitation also emphasizes component-level cost targets and competition among suppliers, including for rocket motors, seekers, and guidance systems.

Lockheed Martin has offered a separate industry response with its PAC-3 Adapted Capability Effector (ACE), a lower-cost interceptor intended to operate within the Patriot ecosystem. Unveiled in July, the weapon is intended to cost less than half as much as the PAC-3 Missile Segment Enhancement (MSE), according to the company. The MSE’s unit price is approximately $5.3 million in the Army’s fiscal 2027 budget request, putting the ACE’s implied price at around $2.5 million if Lockheed’s comparison holds.

A Patriot Advanced Capability-3 (PAC-3) Cost Reduction Initiative (CRI) missile is launched during the recent successful Integrated Battle Command System (IBCS) flight test at White Sands Missile Range.
A Patriot Advanced Capability-3 (PAC-3) missile is launched during an Integrated Battle Command System (IBCS) flight test at White Sands Missile Range. U.S. Army Darrell Ames

Its projected price would still be well above the Army’s separate sub-$1 million target, reflecting the different objectives and requirements behind the two efforts.

The Navy, meanwhile, is pursuing a potentially broader shift toward modular interceptor architectures. Its Naval Modular Missile initiative envisions a family of surface-to-air weapons built around a common Terminal Stage Interceptor, with different boosters and canisters producing configurations for different missions and platforms. The plans include variants intended to fit multiple missiles within a Mk 41 launcher cell, as well as a version designed for launch from Virginia class submarines equipped with the Virginia Payload Module.

The Navy’s longer-term vision is to replace its existing Standard Missile family with modular variants, although the effort remains in development. The concept highlights potential operational benefits beyond manufacturing: smaller interceptors could increase the number of weapons carried aboard ships, while other configurations could preserve longer-range capabilities. The Navy has also outlined an ambition to reach production of 1,000 missiles annually within five years of a contract award.

Both the Navy’s modular missile initiative and Steelfin reflect a push toward common architectures that can support multiple interceptor configurations without requiring an entirely new missile for every mission. Steelfin’s stated scope is particularly broad, with Anduril pitching the family for missions spanning point defense through lower-tier air and missile defense to upper-tier ballistic missile defense. That would cover much of the air and missile defense spectrum, although it does not extend to exoatmospheric midcourse interception. Whether the family can deliver that breadth of capability at the promised cost and scale remains to be demonstrated.

A rendering showing one of the Steelfin missiles. Anduril

Anduril says it has been developing Steelfin for several years with investment from multiple customers and has completed ballistic testing using representative air vehicles. Flight testing of Steelfin variants is planned for 2027.

Already, Anduril says it is working closely with “a number of different customers to get into the field.” Brose continued: “We feel like this is going to be a critical component of the U.S. and allied inventories to complement the range of exquisite capabilities that all of us are familiar with and know by name.”

Steelfin underscores what is now a broader trend toward lower-cost interceptors that can be manufactured at scale, and plugged into existing ecosystems, often with at least a degree of modularity to tackle new and emerging target sets. Steelfin adds to Anduril’s proposal to combine that modularity with a common production system designed to support thousands of weapons annually.

Anduril has yet to develop or produce a surface-to-air missile, although its Roadrunner system gives it experience in the related field of countering aerial threats, including loitering munitions. The company’s ambitions for Steelfin are significant, and modular architectures are certainly attractive. After all, a common baseline should simplify production, reduce costs, and allow interceptors to be tailored to different missions. In practice, however, realizing those benefits has historically proved difficult, and fraught with compromises. Whether Anduril can avoid those pitfalls while delivering the promised combination of capability, affordability, and production scale remains an open question. If it can, Steelfin could put the company in a strong position in the future surface-to-air missile market.

Contact the author: thomas@thewarzone.com

The post Anduril Unveils Steelfin Family Of Modular Surface-To-Air Missiles appeared first on TWZ.

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