Cryo-KERS and MGU-Cold

[aterren]

As was said, there is no free lunch

Either carry the Cyro liquid which is heavy
Or
Create / maintain it on board. In this case, the heat transfer from the source to cyro liquid must be then pimped out of the liquid into the atmosphere. In the very best case (ignoring losses) would be break even from an efficiency perspective.

Non-starter I would think.

[PlatinumZealot]

As was said, there is no free lunch

Either carry the Cyro liquid which is heavy
Or
Create / maintain it on board. In this case, the heat transfer from the source to cyro liquid must be then pimped out of the liquid into the atmosphere. In the very best case (ignoring losses) would be break even from an efficiency perspective.

Non-starter I would think.

Not sure if it is that heavy yet.. that is the thing.

Okay.. for example most of the refrigeration units that I have seen are heavy because of the materials. Cast iron compressor blocks.. Copper tubing... cast iron heat exchanges or thick wall stainless-,steel frames.. heavy bolts. large fans. These systems will be much lighter if they are done to formula 1 standards. It might be some sort of cascade refridgeration system. I know is a slim chance of being light but I just haven't looked into it yet so talking from a purely naive point of view for now.

[riff_raff]

The performance of current M/Gs with PM rotors and stators with copper windings are actually quite good. The neodymium PM and stator magnetic materials are indeed temperature limited. But the more difficult situation is the thermal capability of the power electronics and battery systems. There is more to be gained in terms of weight and performance through improvements in power electronics and storage batteries than from using superconducting materials for the M/G rotor.