JAS 39 Gripen E: Sweden’s Small Fighter With a Big-Brain Combat System

The Saab JAS 39 Gripen E is not trying to be the biggest, heaviest, or most expensive fighter in the sky. Its philosophy is different: give a relatively compact aircraft the sensors, software, electronic warfare, networking, weapons integration, and operating flexibility needed to survive in a modern contested battlespace. That makes it one of the more interesting fighters of its generation, especially for air forces that need serious capability without building their entire defense budget around a single aircraft type.

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Gripen E is the latest major evolution of Sweden’s Gripen family. Saab describes the E-series as a new fighter aircraft system designed for air forces facing more advanced threats or needing to defend larger territories. It is available as the single-seat Gripen E and the two-seat Gripen F, with the E variant measuring 15.2 meters long, having a maximum takeoff weight of 16,500 kg, 10 hardpoints, air-to-air refueling capability, and a 27 mm Mauser BK27 cannon on the single-seat model.

From Gripen C/D to Gripen E

Gripen E is often described as an upgrade, but that undersells the scale of the change. The Swedish Armed Forces state that the E is “in many respects a completely new aircraft type,” with longer range, heavier payload, new sensors, new radar, new communications, stronger protection against jamming, and a much greater emphasis on sensor fusion and electronic warfare.

This matters because modern fighter combat is no longer just about who turns harder or flies faster. It is about who detects first, understands first, shares information first, and fires first. The Gripen E is built around that idea. Saab emphasizes a new AESA radar, Infrared Search and Track system, advanced electronic warfare, modern communication systems, and a more powerful GE F414G engine.

The Swedish Air Force’s transition also reflects this broader change. When Sweden formally received its first Gripen E into the air force on October 20, 2025, the aircraft was presented not simply as a new jet, but as a response to a more dangerous European security environment and the need to operate in contested conditions.

The Core Idea: Information Advantage

The Gripen E’s most important feature may not be its engine or its weapons load. It is its combat system.

Saab describes Gripen E as using networked sensor fusion to collect, process, and share information in real time across a tactical unit. The concept is that one aircraft may actively use sensors while others remain passive, allowing the formation to build a tactical picture while reducing exposure.

That is a major part of the aircraft’s appeal. Gripen E is designed less like a lone duelist and more like a node in a connected combat network. Saab’s description of the aircraft emphasizes “silent networking,” sensor fusion, and the ability for a group of aircraft to cooperate to gain the first missile-launch opportunity.

The cockpit follows the same philosophy. Gripen E uses what Saab calls Human Machine Collaboration, including a Wide Area Display and embedded AI capability intended to help the pilot manage complex information quickly. For enthusiasts, that is one of the most important differences between Gripen E and older fourth-generation fighters: the aircraft is designed around decision speed, not just flight performance.

Sensors, Radar, IRST, and Electronic Warfare

Gripen E carries a modern AESA radar and an IRST system, giving it both active and passive ways to detect targets. AESA radar improves tracking, resistance to jamming, and multi-role flexibility, while IRST is valuable because it can detect heat signatures without emitting radar energy. Saab also highlights the aircraft’s advanced electronic warfare system, including spherical coverage and the ability to support both defensive survivability and offensive electronic attack missions.

This is where Gripen E’s design becomes especially relevant. Many countries cannot afford to operate large fleets of very expensive stealth aircraft, but they still need aircraft that can survive against modern air defenses. Gripen E approaches that problem through electronic warfare, networking, passive sensing, dispersed operations, and rapid upgradeability rather than relying on low observability alone.

The Swedish Armed Forces specifically emphasize that Gripen E is built for contested environments, where aircraft may face threats from the moment they take off rather than only near the target area. That is a useful way to understand the aircraft: it is not just a platform, but a system designed to keep operating when the electromagnetic and tactical environment is hostile.

Weapons and Payload

Gripen E has 10 hardpoints, giving it more flexibility than earlier Gripen variants. Saab’s public materials show and describe the aircraft as able to carry modern sensors, weapons, and pods, with particular emphasis on air superiority and networked missile employment.

One of the key weapons associated with Gripen E is MBDA’s Meteor beyond-visual-range air-to-air missile. Saab links Brazilian Gripen E missile firings with Meteor to the aircraft’s long-range air combat capability. Meteor is important because it fits the Gripen E concept: detect, share, and launch before the opponent can dictate the engagement.

The aircraft is also designed for multi-role work: air defense, reconnaissance, and strike. Embraer’s description of the Brazilian F-39E Gripen states that it is designed for missions including air defense, reconnaissance, and attack, integrating modern avionics, sensors, weapons, and mission systems for complex environments.

Range, Maintenance, and Dispersed Operations

A classic Gripen strength is operational practicality. Saab lists Gripen E’s combat turnaround time as 15–25 minutes and confirms air-to-air refueling capability for both Gripen E and F. That relatively fast turnaround is central to the aircraft’s Swedish DNA: Gripen was built for a country that expected aircraft to operate from dispersed bases, road bases, and limited infrastructure if major airbases were threatened.

Gripen E extends that logic into a more modern battlespace. More fuel, greater range, heavier payload, better sensors, and stronger electronic warfare give the aircraft more reach and more tactical options than the C/D generation. The Swedish Armed Forces state plainly that Gripen E has longer range and can carry a heavier load than earlier versions.

Air-to-air refueling also matters. In November 2025, Embraer, Saab, and the Brazilian Air Force completed certification flight tests for refueling Gripen E from the KC-390 Millennium. The campaign evaluated multiple flight configurations, speeds, and altitudes, including day and night high-speed refueling compatibility across the KC-390 envelope.

Sweden, Brazil, Colombia, and Thailand

Gripen E is no longer just a Swedish project. Saab states that 117 Gripen E-series aircraft have been ordered: 60 for Sweden, 36 for Brazil, 17 for Colombia, and 4 for Thailand.

Sweden’s order is the foundation of the program. Saab and the Swedish Defence Materiel Administration signed an additional 2.9 billion SEK contract in June 2025 for equipment connected to manufacturing Gripen E, supporting the Swedish order of 60 aircraft while also keeping the Gripen C/D fleet available during the transition.

Brazil is the other major pillar. Its F-39E program includes technology transfer, local production, and deeper industrial cooperation. In March 2026, Embraer, Saab, and the Brazilian Air Force presented the first Gripen E produced in Brazil at Embraer’s Gavião Peixoto facility. Embraer stated that Brazil’s contract covers 36 Gripen aircraft: 28 single-seat Gripen E and 8 two-seat Gripen F.

That Brazilian production line is strategically important. Embraer says the Gavião Peixoto plant produces Gripen E using Brazilian and international supply chains, with aerostructures from Saab’s São Bernardo do Campo unit, and that 14 additional aircraft under the current Brazilian contract will follow this production model.

What Gripen E Is — and What It Is Not

Gripen E is best understood as a highly networked, electronically sophisticated, cost-conscious multi-role fighter. It is not a heavy twin-engine air-superiority fighter like the F-15EX, and it is not marketed as a stealth-first aircraft like the F-35. Its strength is a different balance: advanced sensors, electronic warfare, modern weapons, rapid software evolution, efficient operations, and the ability to generate combat sorties from dispersed infrastructure.

That makes it especially attractive for countries that need credible air defense and strike capability but also care about sovereignty, industrial participation, and sustainable operating costs. Brazil’s program shows this clearly: the aircraft is not only being purchased, but also produced locally as part of a long-term industrial and technological partnership.

Final Thoughts

The Gripen E is one of the most intelligently positioned fighters on the market. It does not win every comparison on raw thrust, payload, stealth, or combat radius, but it combines enough of each with an unusually strong focus on electronic warfare, software, networking, and operational flexibility.

For aviation enthusiasts, that makes it fascinating. For smaller and medium-sized air forces, it makes it practical. For Sweden, it represents continuity: a national fighter designed around the realities of defending airspace under pressure. For Brazil, it represents both airpower and industrial capability. And for the global fighter market, Gripen E is proof that modern combat aircraft do not all need to follow the same design philosophy to remain relevant.