P4.2 DESIGN CORRECTIONS

1. A power ceiling did not establish low-speed motor torque. Added catalogue torque/speed ceilings, gearing losses and reflected inertia.
2. The controller reserved power for impossible wheel demand. Reserve is now limited by motor torque, leaving genuine spare power for airflow.
3. A 0.5 s spin-up allowance was incompatible with one smaller blower motor. The 70 kJ spin allowance is retained and scheduled over 8 s; airflow and standby are debited.
4. The first joint hardware audit found bus voltage above the blower electronics ceiling during charging. A 825 V pack charging target now limits regenerative acceptance. Friction braking and direct crossfeed take the remaining demand.
5. The 188-class blower reference left little continuous torque margin. A 208 LC reference fits inside the same 80 kg assembly budget, with 10.46 kg remaining mass margin.
6. The cold wetted-metal preparation allowance increased to 4 kg, paid from the same 6 kg nitrogen inventory.

All stated hardware budgets and maps still require measurement and detailed design. No physical test has taken place.
