Also you'd not need gearbox and shafts. You can completely decouple the fan from the turbine. You could put the fan downwards and the turbine back for instance, or the turbine on the top to hide its heat signature somewhat.
A Tesla motor weighs in at 70lbs (31kg) on its own, not including the inverter or any gearbox, and generates 362hp. Or 11hp / kg.
Using a turboprop because it's easier to do a straight hp comparison, the PW150 has a dry weight of 716.9kg and produces 5000hp continuous. Or about 7hp / kg.
Of course it's absolutely not a fair comparison for a number of reasons, for a start running a Tesla motor at full power for more than a few minutes at a time is going to result in an overheated motor where as the PT150 can do that all day long. The Tesla motor weight doesn't include the inverter which would be needed (unless it's all designed to run each motor at a synchronous speed with the generator...), nor the cooling system, a gearbox (the low pressure turbine of a high bypass engine is only ~4000rpm, the Tesla motor does 18000rpm). Not to mention the elephant in the room, you still have the weight of the generator plus the prime mover (or battery...).
