CFM Explores Conventional Engine as Open-Fan Alternative

Key Development Summary

CFM, a GE and Safran venture, is developing a conventional 'advanced ducted' engine as an alternative to its flagship 'open-fan' design. This 'Plan B' is part of its RISE program, targeting 20% lower fuel consumption for future aircraft.

Industry and Technology Context

While the 'open-fan' architecture promises maximum efficiency, evidence suggests CFM is also seriously considering a more traditional design. This alternative may offer less fuel savings but could provide greater durability, addressing airline concerns over maintenance costs with recent engine models.

Strategic Implications for Aerospace

The final technology choice will impact the strategies of Airbus and Boeing for jets expected around 2040. Airbus supports the open-fan concept, while Boeing and rival engine makers Pratt & Whitney and Rolls-Royce are more cautious, affecting future partnerships and aircraft design.

Summary and Outlook

CFM is balancing innovation with practicality by developing two distinct engine concepts. The industry now awaits a decision that will weigh fuel efficiency against operational reliability for the next generation of single-aisle jets.

FAQ

Q: What is the main difference between the two engine designs?

A: The 'open-fan' design has large, exposed blades for 20% fuel savings, while the 'advanced ducted' design encloses the fan in a conventional casing, potentially offering less savings but better adaptability.

Q: Who are the key players involved?

A: The key players are engine maker CFM, a joint venture of GE Aerospace and Safran, and aircraft manufacturers Airbus and Boeing.

Source: Investing.com