The Affinity™ Supersonic turbofan

A new class of propulsion for supersonic time transport

GE’s Affinity™ is a new class of medium bypass ratio engines that provide exceptional and balanced performance across supersonic and subsonic flights. It is a twin-shaft, twin-fan turbofan controlled by a next generation Full Authority Digital Engine Control (FADEC) for enhanced dispatch reliability and onboard diagnostics.

GE’s Affinity integrates a unique blend of proven military supersonic experience, commercial reliability and the most advanced business jet engine technologies. It features a proven engine core with billions of hours of service, a durable combustor with advanced coatings for sustained high-speed operation, and a special, non-augmented supersonic exhaust system.

It is purposefully designed to enable efficient supersonic flight over water and efficient subsonic flight over land, without requiring modifications to existing compliance regulations. The engine is designed to meet stringent Stage 5 subsonic noise requirements and beat current emissions standards and long-term regulatory goals.

Inspired by supersonic and commercial experience

GE Affinity engine, three-quarters view

Sustained super cruise

Sustained super cruise

Optimized for prolonged high speed use.

Durable combustors for hot and harsh conditions and advanced coatings for turbine section.

Operability redefined

Operability redefined

Performance throughout the flight envelope with a high-altitude service ceiling of 60,000 feet.

Noise compliant

Noise compliant

Acoustically treated throughout, the Affinity is designed to meet or exceed regulatory requirements.

20,000 pounds of thrust

Pounds of thrust

Takeoff thrust: 16,000 lbs - 20,000 lbs

Collaborating to develop the first civil supersonic aircraft, the AS2 supersonic jet

two stage fan


GE’s Affinity will have the highest bypass ratio ever for a supersonic engine. It includes an advanced twin fan, a nine-stage high-pressure compressor, a single-stage high-pressure turbine and a two-stage low-pressure turbine.

latest thermal barrier coatings

Thermal barrier coatings

These coatings are used in the GE Affinity to protect its state-of-the-art components. They act as a heat barrier to keep parts cooler, allowing the engine to run at higher temperatures for greater efficiencies. The coatings minimize interaction with combustion gases, further protecting components inside the engine.

most popular core

World’s most popular core

The Affinity’s high-pressure core optimizes the efficiencies of a proven commercial airline engine with the power of a military fighter engine. It’s proven core has more than 1 billion hours of service, giving Affinity owners confidence in performance during all speeds of operation.

Closing the gap between now and next