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Even hybrids only make sense to me in the context of aircraft having the ability to taxi using electric motors, only starting their engines at the holding point
by VBprogrammer 7y ago
Even hybrids only make sense to me in the context of aircraft having the ability to taxi using electric motors, only starting their engines at the holding point (turbine engines burn a significant amount of fuel even at idle). I believe Airbus have a patent on this idea.
Otherwise turbine engines are run close to their designed maximum continuous thrust for the majority of a flight. It's not like a car where they only need ~20% of their maximum power in cruise.
- 0xffff2 7y agoI'm not an aerospace engineer, so I can only repeat what I've seen in presentations. (I'm a software engineer at an aerospace research organization.) One specific area that I recall being investigated is the ability to decouple power and thrust. That is, convert some of the power generated by the existing turbines into electricity and use that to drive an electric fan in (a) non-traditional location(s). This can have complex aerodynamic interactions that I don't really understand in detail, but the take-away is that it can reduce drag and thus overall energy required for a given flight.