The Boeing 787 Dreamliner, which entered commercial service in 2011 with All Nippon Airways (ANA), is a highly advanced and efficient aircraft. Boeing offers three variants of the Dreamliner—the 787-8, 787-9, and the larger 787-10. As of April, Boeing has delivered 1,127 units across all variants, with an additional 788 orders still pending. A key decision for customers when acquiring a Boeing 787 is selecting the appropriate engine. The Boeing 787 Dreamliner comes with two main engine options: the General Electric GEnX-1B and the Rolls-Royce Trent 1000. Each engine offers unique performance characteristics, and this article will explore their features in detail.

Rolls-Royce Trent 1000: Design and Performance

One of the available engine options for the Boeing 787 is the Rolls-Royce Trent 1000, a high-bypass turbofan engine first tested in February 2006, well ahead of its deployment on the Dreamliner. Derived from the Trent 900, which powers the Airbus A380, the Trent 1000 provides a reliable thrust range between 64,100 and 81,028 lbf, depending on the variant.

There are multiple variants of the Trent 1000. For example, the least powerful, the Trent 1000-E, generates 62,264 lbf at takeoff, while the more powerful Trent 1000-R delivers 81,028 lbf. Despite powering the first commercial Boeing 787 flight, Rolls-Royce has struggled to maintain a significant market share, with only one-third of 787 orders featuring this engine. Supply chain issues and durability concerns have also hampered its reputation. However, the pandemic allowed the company to perform necessary engine replacements during the downtime.

A Challenging Market for Rolls-Royce

Recent years have presented further challenges for Rolls-Royce. For instance, an Air Tanzania Boeing 787 remained grounded for over six months due to Trent 1000 engine issues. The grounding was caused by delayed maintenance and a lack of spare engines, although the aircraft is expected to return to service soon. The engine’s maintenance manual mandates regular service intervals, but the shortage of spare engines has resulted in extended periods of inactivity for affected aircraft. Rolls-Royce continues to work on addressing these challenges to restore confidence in their engine.

General Electric GEnx: The Dominant Player

In contrast to Rolls-Royce, General Electric (GE) has dominated the engine market for the Boeing 787. As of today, approximately two-thirds of 787 aircraft are powered by GE’s GEnx engines. These engines have accumulated more than 50 million flight hours since entering service, making them one of the fastest-selling high-thrust engines in GE’s history.

Developed from the highly successful GE90 engine series used on the Boeing 777, the GEnx powers all three variants of the 787— the 787-8, 787-9, and 787-10. GE offers several versions of the GEnx, each optimized for different performance needs. For example, the GEnx-1B78/P2 produces up to 80,400 lbf at takeoff, while the GEnx-1B75/P2 delivers the highest continuous thrust at 68,800 lbf.

Canadian carrier Air Canada is a notable user of GEnx engines, having ordered GEnx-powered 787-10s. The airline already operates over 35 787-8 and 787-9 models, all of which are equipped with GEnx engines. This consistency provides operational efficiency and fleet commonality, allowing for reduced costs in maintenance and training.

Key Considerations for Airlines

When choosing an engine for the Boeing 787, airlines conduct a thorough evaluation process. According to Rolls-Royce’s Chief Customer Officer, Ewen McDonald, airlines assess both technical and economic factors. They invite proposals from both Rolls-Royce and General Electric and go through a detailed tender process before making a final decision.

The choice of engine involves weighing many factors, including thrust capabilities, maintenance requirements, fuel efficiency, and fleet compatibility. While both engine manufacturers offer competitive options, the decision ultimately depends on the specific needs and operational strategies of the airline.

The Boeing 787 Dreamliner offers airlines flexibility with its two engine choices: the Rolls-Royce Trent 1000 and the General Electric GEnx. While the GEnx has captured the majority of the market with its solid track record and advanced technology, the Rolls-Royce Trent 1000 remains a viable option for operators looking for an alternative. As Rolls-Royce works to overcome recent challenges, the competition between these two engines will continue to shape the future of the Boeing 787 program.

Both engines bring distinct advantages, and airlines must carefully evaluate which one aligns best with their operational goals and performance requirements.