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NASA Program Explores Hybrid-Electric ‘Double Bubble’ Airliner Concept

Design combines turbofan engines, electric tail fans, and a lifting fuselage.

Electra turbine hybrid electric commercial airliner concept with turbofan engines and electric tail fans
Electra’s concept for a 100-passenger commercial airliner combines turbofan engines, electric tail fans, and a “double bubble” fuselage. [Credit: Electra]
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Key Takeaways:

  • NASA's Advanced Aircraft Concepts for Environmental Sustainability (AACES) 2050 project is funding Electra to develop a next-generation commercial airliner concept.
  • Electra's design features turbofan engines, electric tail fans, and a "double bubble" fuselage for added lift, aiming for a 17 percent efficiency improvement by 2050.
  • The project seeks to accelerate the adoption of advanced aviation technologies, including hybrid-electric propulsion and novel airframes, to reshape commercial flight by 2050.
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A little-known NASA project is funding the study of a next-generation commercial airliner concept that combines turbofan engines, electric tail fans, and a unique “double bubble” fuselage designed to add lift.

Hybrid-electric regional aircraft developer Electra on Monday unveiled the concept, which per the company’s analysis could deliver a 17 percent improvement on current projections for efficiency gains through 2050. The concept was borne out of NASA’s Advanced Aircraft Concepts for Environmental Sustainability (AACES) 2050 project, which is funding studies into new aircraft technologies—including advanced propulsion, fuels, and airframes—which could reshape commercial aviation in the 2040s, 2050s, and beyond.

Jack Daleo

Jack is a staff writer covering advanced air mobility, including everything from drones to unmanned aircraft systems to space travel—and a whole lot more. He spent close to two years reporting on drone delivery for FreightWaves, covering the biggest news and developments in the space and connecting with industry executives and experts. Jack is also a basketball aficionado, a frequent traveler and a lover of all things logistics.

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