Boeing to evaluate engine proposals for NMA


Singapore - After receiving proposals from CFM, Rolls-Royce, and Pratt & Whitney, Boeing will evaluate the new engines for the NMA (New Midmarket Airplane) project, which aims to create a new 200-300-seater aircraft.

Randy Tinseth, Boeing's vice president of marketing, declined to comment on the specifications of the new engine, but he confirmed that CFM, Pratt & Whitney and Rolls-
Royce have information about it.

Boeing will now assess issues related to engine capacity, durability and readiness to use, as well as other features such as expected fuel consumption and complexity of integration with the aircraft.

Boeing might also choose two types of engines to the NMA, just as it does in the 787 Dreamliner. While CFM wants a response back in 2018 on program development, Boeing thinks it is early to decide. The entrance into service of the aircraft is planned for 2024-25.

CFM International

CFM, a joint venture between GE and Safran said that it would be possible to make this engine as efficient as LEAP 1 by almost doubling the power produced. The company does not rule out developing a new concept from scratch completely.

Pratt & Whitney

Pratt & Whitney thinks it has the advantage of using the same concept in Pure Power engines to equip NMA with a new engine. The manufacturer stands out for being the only manufacturer with internal gearbox experience since CFM and Rolls-Royce still don't have a product with this technology in operation.

Internal gearbox, which slows down the speed of the fan could save 20 percent on fuel consumption, the manufacturer says


Rolls-Royce has already presented a proposal based on the UltraFan concept that company has been developing lately to manufacture engines for the 777 and 787.

Rolls-Royce said it is possible to implement this technology to produce propulsion up to 50,000 lbs, but will have to
adapt some of the current technologies to deliver a reliable product to Boeing by 2025.