France Launches ASN4G Development: MBDA’s Hypersonic Missile Set to Redefine Airborne Nuclear Deterrence

AeroMorning – John Smith – June 11, 2026

France officially launches development of its next-generation nuclear missile

France has taken a major step in the modernization of its nuclear deterrent.

On June 2, 2026, the French Defence Procurement Agency (DGA) awarded MBDA (Airbus 37.5%, BAE Systems 37.5%, Leonardo 25%) the framework agreement and development contract for the Air-Sol Nucléaire de 4ème Génération (ASN4G), the future air-launched nuclear missile that will replace the current ASMPA-R in French service.

The announcement, made public on June 11, confirms the transition from technology maturation to full-scale development. Scheduled to enter service around 2035, the ASN4G will equip both the French Air and Space Force’s Strategic Air Forces (FAS) and the French Navy’s Nuclear Air Arm (FANu), carried by the future Rafale F5 standard.

The program represents one of the most ambitious missile projects ever undertaken by France and places the country among a very small group of nations pursuing operational air-launched hypersonic weapons.

What is the ASN4G?

The ASN4G (Air-Sol Nucléaire de 4ème Génération) is a nuclear-capable air-launched hypersonic cruise missile being developed by MBDA with support from ONERA, France’s aerospace research agency. It is intended to replace the ASMPA-R, which currently forms the airborne component of France’s nuclear deterrent.

Unlike its predecessors, the ASN4G is expected to rely on a scramjet-powered propulsion system capable of sustaining hypersonic flight throughout much of its mission profile.

Although many specifications remain classified, defense analysts generally expect the missile to feature:

• Speed of approximately Mach 6 to Mach 8
• Range exceeding 1,000 km
• Advanced maneuverability at hypersonic speeds
• Enhanced stealth characteristics
• A next-generation airborne nuclear warhead
• Integration with the Rafale F5 combat aircraft

These characteristics would represent a substantial leap beyond the current ASMPA-R, which flies at approximately Mach 3 and has a range generally estimated at 500–600 km.

Why France needs the ASN4G

The strategic environment has changed dramatically since the ASMPA entered service.

Russia, China and the United States have all invested heavily in:

• integrated air-defense systems
• long-range radar networks
• anti-access/area-denial (A2/AD) capabilities
• advanced missile interception technologies

As a result, penetrating modern air-defense networks has become increasingly challenging.

France’s airborne nuclear component relies on the ability of a Rafale to approach a target and launch a stand-off missile capable of surviving hostile defenses. The ASN4G’s combination of speed, maneuverability and range is designed to ensure that this capability remains credible through the 2040s and beyond.

The technological breakthrough: scramjet propulsion

One of the most remarkable aspects of the ASN4G is its propulsion system.

Unlike conventional rocket-powered missiles, the ASN4G is expected to use a “superstatoréacteur” or scramjet engine.

A scramjet allows combustion to occur while airflow remains supersonic inside the engine, enabling sustained flight at extremely high speeds.

Very few countries have demonstrated mastery of this technology.

France’s work on hypersonic propulsion has been conducted through multiple research programs involving ONERA, MBDA and ArianeGroup, including studies under projects such as Prométhée and MIHYSYS.

The DGA itself described the ASN4G as relying on technological and industrial expertise possessed by only a handful of countries worldwide.

How does the ASN4G compare with its competitors?

Although hypersonic weapons are attracting significant global attention, relatively few operational systems exist today.

ASN4G (France)

• Type: Air-launched hypersonic cruise missile
• Propulsion: Scramjet
• Estimated speed: Mach 6–8
• Estimated range: >1,000 km
• Payload: Nuclear
• Entry into service: ~2035

Kh-47M2 Kinzhal (Russia)

• Type: Air-launched ballistic missile
• Speed: Up to Mach 10
• Range: Approximately 1,500–2,000 km
• Payload: Conventional or nuclear
• Operational status: In service

Unlike the Kinzhal, which follows a quasi-ballistic trajectory, the ASN4G is expected to be a true air-breathing hypersonic cruise missile with sustained maneuverability throughout flight.

DF-17 / DF-ZF (China)

• Type: Hypersonic glide vehicle
• Launch method: Ground-launched ballistic booster
• Range: Around 1,800–2,500 km
• Operational status: In service

The Chinese system belongs to a different category, relying on a boost-glide architecture rather than air launch.

HACM (United States)

• Type: Hypersonic Attack Cruise Missile
• Propulsion: Scramjet
• Payload: Conventional
• Status: Development

The ASN4G is arguably closer in concept to the American HACM program than to Russian or Chinese systems, although France’s missile is specifically intended for nuclear deterrence.

Is there an export market?

The short answer is no.

Unlike most MBDA products, the ASN4G is not intended for export.

The missile forms part of France’s sovereign nuclear deterrent and will carry a nuclear warhead. Such systems are subject to the highest levels of national security restrictions and are not available on the international market.

However, the technologies developed for ASN4G may have broader implications.

Areas such as:

• scramjet propulsion
• hypersonic aerodynamics
• thermal protection materials
• advanced guidance systems

could influence future European missile programs and next-generation conventional strike weapons.

The Rafale F5 connection

The ASN4G is inseparable from the Rafale F5 program.

France’s future Rafale standard is being designed specifically to support:

• ASN4G integration
• collaborative combat drones
• enhanced connectivity
• future air-combat capabilities

The combination of Rafale F5 and ASN4G is expected to become the cornerstone of France’s airborne nuclear deterrent from 2035 onward.

Strategic significance beyond France

While the missile will remain exclusively French, its significance extends far beyond national borders.

The ASN4G will likely become:

• Europe’s only operational air-launched hypersonic nuclear cruise missile
• one of the world’s few scramjet-powered strategic weapons
• a symbol of Europe’s ability to maintain sovereign strategic technologies

At a time when hypersonic weapons are increasingly viewed as a defining feature of future military competition, the ASN4G places France among the small circle of nations capable of designing, producing and fielding such systems independently.

Conclusion

The June 2026 development contract marks the beginning of the final phase of a program that has been under study for decades.

When it enters service around 2035, the ASN4G will replace the ASMPA-R and become the spearhead of France’s airborne nuclear deterrent.

With expected speeds approaching Mach 8, a range exceeding 1,000 kilometers and advanced scramjet propulsion, the missile represents a major technological leap over previous generations.

More than simply a new missile, the ASN4G embodies France’s determination to preserve an independent and credible nuclear deterrent in an era of rapidly evolving threats and increasingly sophisticated air-defense systems.