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alberthyesterday at 10:44 PM5 repliesview on HN

Is this EV or Hybrid?

The founder seems to sneak in the word "hybrid", around 1m30 mark in the video below.

https://youtu.be/nM86DBOqgPM?si=5unXLmPxk6M_kmuN&t=86

Note: not being negative, I just want to ensure I understand correctly since the title might imply something else.

Update: confirmed, it does use aviation fuel.

> "The airplane will also include a reserve-hybrid configuration, consisting of two turbo generators powered by sustainable aviation fuel. The reserve-hybrid system is installed to secure reserve energy requirements without cannibalizing battery range, and it can also be used during cruise on longer flights to complement the electrical power provided by the batteries."

https://www.heartaerospace.com/newsroom/heart-aerospace-unve...


Replies

lumayesterday at 10:52 PM

Hybrid after the first 125 miles, total range 500 miles. Their problem is diversions - an incident at the destination airport may mean an passenger aircraft may need to land at an airport which could be a couple hundred miles away. The hybrid powerplant throws the fuel efficiency numbers off so goal is not to run it unless needed, but they could not get certification without it.

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class3shocktoday at 1:49 AM

The X1, which is what flew, is all electric. The ES-30, their proposed product, is hybrid.

yndoendoyesterday at 10:55 PM

With limited information form their web site, both. Being able to run pure electric while switching to fossil fuel. [0]

The way modern hybrids can charge from an outlet, I classify them as EV-Hybrid, and only use gas if need be vs older ones that only charge through the gas engine, Hybrid.

[0] https://www.heartaerospace.com/es-30

tuatoruyesterday at 11:11 PM

Surprised they are not using linear opposed piston crankshaftless generators to make an extended range EV aircraft.

Smaller, lighter, simpler, cheaper, and more flexible about fuel.

https://www.youtube.com/watch?v=NeG4zLlFkak

Linear engine starts around 11:19

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dyauspitrtoday at 2:27 AM

It uses aviation fuel only after the electric battery is empty. And uses the fuel to run generators, the motors are all electric.

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