The engine power model assumes a current of 50A in the computations. If a fuse of 40A is used in the circuit can that value be used in the cost computation?
No. Like the 1.2V value, the 50A value was selected for the cost model as an arbitrary current level typical of model aircraft propulsion systems. The 50A value must be used in the cost model. Teams may determine the actual current levels they operate at based on their particular components capabilities and reliability. • Question: In the cost formula the REP equation contains both the number of engines, and the number of cells. How are multiple engine REP’s computed? Answer: The REP is computed for each engine multiplied by the number of cells powering that engine. The individual engine REP’s are then summed for the total REP. For example: (1) If there are 2 engines connected to a single 20 cell pack, the REP would be 2 engine*50A*1.2V*20 cells (2) If there are two engines each connected to a separate 14 cell pack, the REP would be 1 engine*50A*1.2V*14 cells + 1 engine*50A*1.2V*14 cells. • Question: Are the initial cost for set-up per span or per semi-span? Answer: Per span. • Questio
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