RBE2-XG radar, M88 T-REX, SPECTRA, ASN4G, and stealth drone: the DGA is preparing the Rafale F5, a major overhaul expected around 2033.
Summary
France has just taken a new step in the development of the Rafale F5. During the summer of 2026, the French Defence Procurement Agency (DGA) awarded several contracts to Dassault Aviation, Thales, Safran Aircraft Engines, and MBDA to secure the technologies of the future standard before launching production. Target qualification: around 2033. The F5 will introduce the AESA RBE2-XG radar, a new digital generation of SPECTRA, the IVDL stealth data link, an ultra-low-drift inertial navigation system, and potentially the M88 T-REX engine, whose maximum thrust is set to increase from 7.5 to 9 tonnes. It will also deploy the ASN4G hypersonic nuclear missile starting around 2035 and fight alongside a collaborative stealth drone derived from the achievements of the nEUROn program. Taken individually, these upgrades represent major advances. Together, they transform the Rafale into the central node of a distributed combat system.
The F5 standard represents a much deeper overhaul than a simple software update
Describing it as a simple modernization of the Dassault Rafale would be misleading. The DGA itself describes the F5 standard as a mid-life upgrade designed to keep the aircraft effective against air defenses out to 2035 and beyond.
The contracts announced in September 2026 do not mark the absolute start of the program, as studies and initial orders had already been initiated in 2023 and 2024. The contracts awarded in the summer of 2026 pave the way for the launch of F5 production scheduled for late 2026.
The architecture changes as much as the equipment. The goal is to make the mission system more open, more easily scalable, and capable of fusing information not only from the Rafale, but also from other aircraft and a combat drone.
The RBE2-XG is designed to see further and better distinguish stealth targets
The most visible change involves the radar. The current RBE2 AESA already uses an active electronically scanned array composed of numerous transmitter-receiver modules. The beam is steered electronically without any mechanical movement of the antenna.
The future RBE2-XG (for eXtended Generation) retains the footprint of the current radar—a critical constraint since the nose diameter of the Rafale remains unchanged. Improvements must therefore come from electronics, radiofrequency power, and digital signal processing.
The program relies heavily on gallium nitride (GaN) components. This semiconductor tolerates higher power densities and temperatures than previous generations. It delivers greater available radiofrequency power while keeping thermal constraints under control.
The DGA reports a significant increase in power and range, without disclosing exact distances. This is standard operational discretion. For a radar, range depends on power, but also on frequency, antenna gain, signal processing, the electromagnetic environment, and above all, the target’s radar cross-section.
The explicit goal is to improve the detection and identification of aircraft with an extremely low radar cross-section.
The processing unit of the RBE2-XG will also be far more powerful. Artificial intelligence will assist with data processing and target classification. As a result, the radar will no longer operate merely as a standalone sensor generating its own tracks; it will automatically collaborate with other sensors across the formation.
Thales indicated a timeline including a first assembled radar in 2027, initial flight tests starting in 2028, and a progressive ramp-up toward a representative F5 configuration.
SPECTRA F5 transitions to fully digital electronic warfare
The current Rafale features a key distinctive trait: its SPECTRA electronic warfare system is not an external pod mounted under the fuselage, but is fully integrated into the airframe.
SPECTRA combines radar warning receivers, laser warning receivers, infrared missile approach warners, electronic jamming equipment, and decoy dispensers. Its central processor fuses this data to identify threats, determine their bearing, and recommend or initiate appropriate countermeasures.
With SPECTRA F5, the core of the system transitions to fully digital operation.
This evolution responds to shifts in the electromagnetic battlefield. Modern radars can rapidly alter frequency, pulse width, repetition rate, and waveform. Low Probability of Intercept (LPI) systems specifically aim to be difficult to detect and classify.
A digital system can analyze a broader spectrum more quickly, compare signals against threat libraries, and adjust its signal processing dynamically. The DGA explicitly targets a marked improvement in both detection and jamming performance.
SPECTRA thus becomes integral to “first-in” capability: penetrating airspace covered by modern air defense radars and surface-to-air missiles to locate, avoid, jam, or destroy them.
The M88 T-REX adds nearly 30 kN of thrust to the Rafale
In parallel, Safran Aircraft Engines is working on upgrading the M88-2 into the M88 T-REX. The DGA has awarded its preliminary design contract, meaning its final configuration should not yet be considered definitively frozen.
The main figure, however, is official: maximum thrust with afterburner is set to increase from 7.5 to 9 tonnes-force per engine, or roughly 73.5 to 88.3 kN. For both engines combined, theoretical maximum thrust increases from approximately 147 to 176.5 kN.
That represents a 20% gain.
Yet Safran is not designing an entirely new engine. The T-REX will maintain the dimensions and modular architecture of the M88 to remain fully compatible with the Rafale airframe.
The thrust increase relies on three main modifications. The low-pressure compressor will handle a higher airflow. The high-pressure turbine will incorporate new materials and next-generation cooling circuits. Finally, the nozzle will feature optimized aerodynamics.
These enhancements are critical because raising the operating temperature and mass flow of a turbofan rapidly increases mechanical and thermal stresses on hot section components.
The additional thrust will also offset the gradual weight and drag increases caused by new sensors, electronic equipment, and Rafale weapons, without compromising the aircraft’s overall flight performance.
The new IVDL link prepares the Rafale for contested network combat
Sensor performance is useless if information cannot be shared.
The Rafale already operates Link 16. The F5 standard will add a new Inter-Vehicle Data Link developed by Thales.
The IVDL will rely on a high-throughput, directional, anti-jam waveform. Exact frequencies, bandwidths, and transmission methods remain classified.
The operational objective is clear: allow Rafales and accompanying platforms to maintain and exchange a shared tactical picture in environments where the adversary actively attempts to detect emissions and jam communications.
Low observability is as vital as data throughput. A data link transmitting omnidirectionally with high power could reveal the presence and position of an aircraft that is otherwise difficult to detect on radar.
The IVDL becomes truly essential as the pilot’s role evolves beyond flying a single aircraft to synthesizing data from multiple platforms and coordinating with combat drones.
The inertial navigation system prepares the F5 to fight without GPS
Another less conspicuous but strategic upgrade is the new inertial navigation system equipped with a hemispherical resonator gyroscope (HRG).
An inertial navigation system calculates an aircraft’s position from accelerations and rotations measured relative to a known starting point. Operating passively without external emissions, it cannot be jammed like a GNSS signal.
Its primary drawback is drift: minute measurement errors accumulate over time, leading to growing positional inaccuracies.
HRG technology aims specifically for ultra-low drift rates. In a high-intensity conflict against an adversary capable of jamming or spoofing GPS, this navigational autonomy becomes critical.
Development work for the F5 also combines inertial navigation, highly precise clocks, and position updating using SAR radar mapping. The radar compares observed terrain against a reference database to continuously correct the aircraft’s positional drift.
The ASN4G turns the Rafale F5 into a hypersonic nuclear vector
The F5 standard’s most sensitive mission involves nuclear deterrence.
On June 2, 2026, the DGA officially awarded MBDA the development contract for the ASN4G (4th-generation air-launched nuclear missile). Entry into service is scheduled for around 2035, following the initial qualification of the F5 standard.
It will replace the upgraded ASMPA.
While detailed specifications remain classified, one key capability is public: the ASN4G will exceed Mach 5 while retaining maneuvering capabilities.
This combination is far more demanding than simple high speed. At several kilometers per second, aerodynamic heating, guidance, stability, flight control, and communications present severe physical challenges.
The operational advantage is significant. Hypervelocity drastically reduces the reaction window available to detect, track, identify, and engage the incoming missile. Meanwhile, maneuvering capabilities render its trajectory unpredictable.
Integrating the missile onto the F5 involves far more than simply hanging hardware under a wing; it requires dedicated mechanical and electrical interfaces, high-speed data exchanges, mission planning integration, separation procedures, flight testing, and complete nuclear qualification.
The ASN4G will equip both the Strategic Air Forces and the Naval Nuclear Air Force.
Stealth drones transform the Rafale into the flight lead of a distributed formation
Perhaps the most fundamental doctrine shift lies elsewhere.
Since October 2024, Dassault Aviation, Thales, and Safran have been developing a stealth combat drone designed to operate alongside the F5 standard. The project builds directly on lessons learned from the European nEUROn demonstrator, which completed over 170 test flights.
The operational aircraft will feature stealth technologies, supervised autonomous capabilities, and an internal weapons bay to preserve its radar signature.
Envisioned missions include first-in penetration, air-to-air combat, air-to-ground strikes, and the suppression of enemy air defenses (SEAD).
The operational concept of the Rafale F5 and its combat drone redefines engagement geometry. The pilot can remain stand-off while uncrewed aircraft penetrate defenses, gather intelligence, deliver ordnance, or force threat systems to illuminate their radars.
Dassault stresses, however, that a human will always remain in the loop. The decision to employ lethal force will not be delegated to artificial intelligence.
The Rafale F5 becomes less of an aircraft and more of a system of systems
Taken individually, the RBE2-XG, SPECTRA F5, and T-REX engine resemble conventional upgrades to radar, electronic warfare, and propulsion. Viewing them in isolation misses the broader picture.
The core philosophy of the F5 standard is connecting these capabilities seamlessly. The radar detects, SPECTRA monitors the electromagnetic spectrum, the IVDL shares the picture, AI assists with data fusion, the inertial navigation system preserves positioning when GNSS is lost, the combat drone extends sensor and shooter reach, and the ASN4G secures the airborne nuclear leg against future defenses.
This architecture represents the true breakthrough. While the Rafale F5 will visually resemble current models, its operational role will be fundamentally transformed: the fighter becomes the command hub of a distributed combat bubble, built to function even when radars, communications, and navigation systems are under simultaneous attack.