Cost Assessment

Task 55 CostBenefit Analysis for an autonomous aircraft based electric taxi system TUDM10M22In this task we develop a cost benefit analysis CBA model for an airline equipping an aircraft with an autonomous etaxi system Next to the investment in the electric motor control equipment and APU modifications we look at the operational costs caused by a higher weight of the aircraft during cruise which is dependant on the number of flights and the distance flown per The benefits mostly caused by lower taxi fuel and engine maintenance savings are based on the number of turnarounds per year and the taxi duration per flight This can then be done for a single aircraft but also expanded to an entire fleet using the flight schedule for an airline Finally a model will be made that assigns equipped and non equiped aircraft to flights in the schedule to optimize the fuel savings taking into account the availability of an nonautonomous system at one or more of the visiting airportsTask 56 CostBenefit analysis for nonautonomous electric taxi systems TUDM10M22In this task we analyze the cost of the required airport infrastructure to enable nonautonomous electric towing Having as input the towing routing solutions and the assignment of the fleet of towing vehicles solutions in WP2 we develop a mathematical model that optimizes the required number of charging stations at the airport that can support a day of operations Further we estimate the cost of setting up this minimum required charging stations at the airport and the total cost of the electricity used by the towing vehicles The power of the electric drive train is a main driver for the acceleration maximum speed and speed driving up a slope Further we develop a CostBenefit Analysis CBA of implementing electric towing versus classical taxi at an airport In particular we tradeoff between costs for the airport to implement the required infrastructure and the expected fuel and maintenance cost savings and environmental benefits achieved when using electric towing For this analysis we use existing generic CBA tools eg the Airport Benefit Cost System implemented in the Aviation Planning Economics Suite c as well as the Value Operations Methodology VOM developed at TUD in conjunction with some of the extended aviation cost models already available