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An experimental plane to help develop a future hybrid still another experimental phase away that will still be limited to regional travel due to autonomy issues. Still pretty awesome, but still some time away.
this post was submitted on 15 Aug 2026
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I can understand a hybrid train because of certain sections of track electrification issues and the fact that diesel electric is how even trains that run entirely on diesel operate so you're essentially just toting around a generator to operate your already electric engine. I understand hybrid cars with regenerative braking and range extension. I don't really understand hybrid planes.
Like I can imagine electric is more efficient for takeoff because electric engines produce more initial power generally than what fossil can match per engine size(a big part of both hybrid trains and cars both using batteries for initial acceleration) and then you cruise with jet fuel. I'm just having a hard time imagining it is worth it from a defossil fuel perspective or from a straight efficiency perspective.
Combustion engines have maximum fuel efficiency at a specific RPM. A Hybrid has the advantage that you can run that engine at maximum efficiency 100% of the time and using the generated electrical energy to generate motion. The gains by being able to keep the ICE at peak efficiency are more than the loss you take from the conversion. That's the same principle as in hybrid cars - look up Technology Connections video where he analyzes the behavior of his hybrid car. It is for sure preferable to than just the ICE directly, losing a lot of efficiency and therefor fuel because of differences in needed power output. Combining this into a plugin-hybrid makes - as you said - the takeoff use no or just the default amount of jet fuel at all.
This will not eliminate the need for jet fuel, but even a reduction is preferable to the status quo. Until we get batteries that are light enough while keeping energy density at least as high as now (preferably higher), purely electric long-range flight is not an option that's available.
Some military tanks are going hybrid, too, despite not really being able to move very far on the electric battery. It's still worth it for idling and running the on-board systems without actually running the fossil-fuel-burning engine, though, and is potentially a stepping stone towards greater improvements in the electric drivetrain for quieter and more energy efficient movement.
With how warfare is currently evolving, i do not see much future for MBTs in general, at least not in the amounts that were produced before. Drones simply kick the shit outta them while costing a fraction.
It's even better, it's not the same cycle as a regular gas engine, it's something more efficient.
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What if the worthwhile goal and priority were in fact to "defossil"?
What do you mean? I favor synthetic aviation fuel derived from hydrolysis which is very lossy on energy and would largely kill most current air routes in favor of trains. I think a 40x price increase on fuel is likely, but the actual implementation is proven since it's essentially plug and play with existing infrastructure. I think the best way to make up for the subsequent loss of profitable air routes is electrified rail. This tech isn't for getting off oil though, it's for reducing use at best and if it actually does improve efficiency it would be used along with synthetic fuel.
i also prefer electrified rails, but i'm fine with decarbonizing aviation where rails aren't feasible. rail construction has thresholds to meet in terms of travel density, frequency, and ground conditions.