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berridos

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For my single seater i would have enough cruise power with 28kw maybe. So thats double than the attached generator or 60kg. Wonder how much battery weight i would need to overcome takeoff phase until recharging kicks in again.
Such a generator engine can be located everywhere in the plane and would be atractive for unconventional configurations with CG difficulties.
i like the idea if improved a bit
 

12notes

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That example burns a lot of fuel, and it's a 2 stroke engine attached to a generator. From their data, 600g/kWh - 28kW would be burning 22l/hour (6 gph), for 38 hp and an engine weight of 59kg (130 lbs.)

For comparison, a Rotax 503 makes 37kW, burns 15l/hour (4 gph), and weighs about 35kg. It is also a 2 stroke, makes more power, burns less fuel, and leaves 25 kg for whatever generator you'd want.

Hirth F23 has similar power, weighs 25kg, and costs around $6K new. Not sure what fuel burn is, but I'd guess it's considerably less than 22l/hr.

There's probably more out there, those were just the first two I thought of.
 
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