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Aircraft Configurations/Technologies

Turboelectric

NASA N3-X

Fuel burn reduction 70%, same range, speed, airport infrastructure. Technology: Hybrid Wing Body, Fully distributed 50MW, Superconducting, 7500V, power system

NASA N3-X Turboelectric aircraft NASA N3-X Turboelectric diagram showing turboshaft, fuel, electric bus, generator to 2 motors with distributed fans

Partially Turboelectric

Empirical Systems Aerospace ECO-150R

Depending on the underlying technology assumptions performance ranges between matching and significantly exceeding current aircraft fuel burn. Technology considered ranges from superconducting electrical machines cooled with liquid hydrogen to conventional machines at various technology levels. The ECO150R, which utilizes midterm electrical machine technology.

NASA ECO-150R aircraft NASA ECO-150R Turboelectric diagram showing turboshaft, fuel, electric bus, generator to 2 motors with distributed fans

NASA STARC-ABL

NASA STARC-ABL aircraft Partial Turboelectric diagram showing turbofan, fan, fuel, electric bus, generator to 2 motors with 1 to many fans

Boeing SUGAR Freeze

Boeing SUGAR Freeze aircraft Boeing SUGAR Freeze Partial Turboelectric-Fuel Cell diagram showing turbofan, fan, fuel, fuel cell, electric bus to 2 motors with 1 to many fans

Hybrid Electric

Airframe/propulsion remains relatively decoupled.

Boeing Sugar Volt

  • Parallel hybrid, 150 passenger, 900 nm on battery
  • 1.3 and 5.3 MW machines considered
  • Fuel off-loaded 750 W-hr/kg batteries charged from grid
  • 60% fuel burn reduction

UTRC hGTF

On-going, optimized geared turbofan engine for cruise by adding boost power for take off and climb
  • Parallel hybrid, 150 passenger
  • 2.1 MW machines, 1000 W-hr/kg batteries
  • 6% reduction in fuel burn and 2.5% reduction in energy usage

R-R LibertyWorks EVE

On-going, parametrically optimized engine with hybrid climb & cruise segments
  • Parallel hybrid, 150 passenger
  • 28% reduction in fuel burn for a 900-nm mission
  • Up to a 10% total energy reduction for a 500-nm
  • Optimizing for minimum fuel usage predicts an 18 percent reduction in total fleet fuel usage.

EAP Resources

The EAP team has a wide selection of resources available. Explore the link below to locate technical documents and presentations.

Publications


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