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Electrified Aircraft Propulsion (EAP)
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Airplane Concepts
Hybrid Electric
Overview
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, o
ptimized 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.
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