.. _assumptions-lcc:

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Life Cycle Cost model assumptions
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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.