GE’s Catalyst turboprop engine has reached a critical milestone with its recent Federal Aviation Regulation (FAR) Part 33 certification, ensuring its airworthiness and bringing it a step closer to operational deployment. This achievement is not only a technical success but also a testament to the significant innovations behind the engine, including the extensive use of 3D printing in its design. Nearly a third of the Catalyst’s internal components have been created using 3D printing technology, replacing 855 traditionally manufactured parts with just 12 3D-printed ones. The result is a lighter, more efficient engine that promises substantial cost savings in maintenance and fuel consumption.
The Catalyst turboprop engine features optimized components, including the high-temperature turbine and compressor, which have been designed for improved performance. Notably, the engine consumes 18% less fuel than comparable engines, which represents a significant financial advantage for operators. With turboprop fuel costs ranging from $250 to $600 per hour, this reduction in fuel consumption can have a considerable impact on overall operational costs.
In addition to fuel efficiency, the Catalyst engine also offers a 10% increase in cruise speeds compared to its competitors—another compelling benefit for customers. These performance gains are achieved through a combination of advanced materials, precision manufacturing, and cutting-edge design, with parts sourced from across Europe, including Turin, Warsaw, Prague, Bielsko-Biała, and Cameri, Italy. GE’s subsidiary, Avio Aero, played a pivotal role in the development of the engine, working alongside several other GE divisions.
The Catalyst engine’s certification process was rigorous, meeting updated standards that included 20 additional requirements, 8,000 hours of engine operation, 23 engines tested, and over 90 component evaluations. This detailed testing ensures that the engine meets the highest safety and performance standards before it enters the market.
GE’s innovative approach to engine manufacturing, particularly through the use of 3D printing, could pave the way for greater adoption of additive manufacturing in the turboprop market. With a revenue opportunity valued at $1.3 billion, the turboprop sector remains a competitive and growing segment, with around 1,800 turboprop aircraft delivered annually in the U.S. alone. The success of the Catalyst engine positions GE to make a significant impact in this space, potentially revolutionizing the way turboprop engines are designed and produced.
The Catalyst engine is particularly crucial for Textron, a $13 billion revenue company known for a diverse range of products from golf carts to military helicopters. While Textron has performed well in the Army Vertical Lift program, outpacing competitors like Sikorsky/Boeing, its aviation defense revenue has seen slight dips in recent years. As a smaller player compared to giants like Airbus and Northrop, Textron faces pressure to maintain strategic growth, particularly in the highly competitive general aviation market.
Textron made a bold move by acquiring Cessna and Beechcraft, betting on smaller civilian aircraft to complement its strong presence in commercial and military helicopters. However, the small aircraft market is increasingly crowded, with competitors like Pilatus, Mooney, Diamond Aircraft, and others vying for market share. In addition to traditional aircraft, the rise of electric aircraft and personal flying transport is adding complexity to the landscape.
To succeed in this rapidly evolving environment, Textron needs a competitive edge. The combination of GE’s advanced engine technology and additive manufacturing could provide just that, particularly for the Beechcraft Denali, a high-performance turboprop aircraft. If Textron can successfully position the Denali as a leading contender in the small aircraft market, it could set a new standard for innovation and performance in the sector.
The success of the Catalyst engine and Textron’s Beechcraft Denali could be a catalyst (no pun intended) for the wider adoption of additive manufacturing in aviation. As the technology continues to evolve, it could transform not just how engines are built, but how entire aircraft are designed and produced. The ability to create lighter, more efficient, and cost-effective components through 3D printing has the potential to reshape the industry and accelerate the development of next-generation aircraft.
If Textron and GE’s collaboration proves successful, it could signal a shift in the general aviation market, inspiring other players to adopt similar technologies and pushing the boundaries of what’s possible in aircraft design and manufacturing. As competition intensifies and new technologies like electrification continue to develop, the aviation industry is on the cusp of a major transformation—and GE and Textron are poised to be at the forefront of that change.
By Impact Lab

