Life Cycle Cost model assumptions

The following assumptions have been made in the calculation of the Life Cycle Cost (LCC).

• Each powertrain component’s production cost is defined as its purchase cost.

• The costs of the DC bus and DC splitter are neglected due to their close association with the DC cable.

• Engines and propellers operational costs are the overhaul cost divided by Time Between Overhauls (TBO).

• Electric sources and electronics operational costs are their replacement cost divided by their lifespan.

• The purchase cost of the electronics are estimated with $/kW or $/A ratios derived from retail prices.

• Storage tanks and gearboxes maintenance costs are included in the aircraft’s annual maintenance.

• In the DC cable model, the shield and core unit costs are set equal, as are the insulation and sheath costs.