P4.3 CORRECTION RECORD

1. The matched-drag development case exhausted its battery before reaching 400 km/h. A delayed-BMS energy supervisor and a latched reserve guard now protect services. The controller does not receive true CdA. Optional performance is reduced when the finite budget is threatened.
2. A combined high-resistance/leakage case exceeded instantaneous supply during simultaneous floor/upper startup. Upper startup now uses remaining headroom and must complete its full energy account before its full thrust fraction is available.
3. Lumped braking startup counted energy without establishing the floor motor's torque/power feasibility. A dynamic rotor now carries rotational energy, pays fan work, and limits 86 kW / 150 Nm. Its nominal 95% pressure response is about 0.93 seconds, rather than an assumed instantaneous floor.
4. Delayed sensor queues sometimes selected an extra-old sample at exact timing boundaries because of floating-point roundoff. A numerical tolerance corrects sample-boundary selection. The final timestep and pressure-surface refinement differences are recorded in the audit; this is not physical precision.
5. Collective upper-vent motion could consume differential travel. Each actual bank now obeys 110-150 degree bounds and its own rate limit; fault/split-grip control returns the mean toward 130 degrees to preserve differential authority. Actual joint work is paid once.
6. The initial 17 mm shaft screen covered steady power but not the full motor peak. The final 20 mm layout covers 150 Nm shared across three shafts with 25% imbalance, within the same 80 kg mass allowance. Bearing envelope and beam-mode checks were updated. Bearing life, housing dynamics, containment and fatigue remain unqualified.

The frozen driving configuration predates the additional validation draws. Mechanical sizing consumes unused mass allowance without changing the frozen mass or 0.18 kg m2 rotor-inertia requirement. New component details are separately hashed in hardware-budget.json.