Recent research has delved into many aspects of aviation fuel consumption. In some ways the analogy with a personal automobile is apt: you fill up, and you drive until the tank is nearly empty, repeat. The difference for aviation is that the weight of the fuel itself significantly adds to the power needed to fly ("it takes fuel to fly fuel"). So, although the equations and ideas are well known, I would appreciate pointers to industry standard methods. Our goal is analytical shortcuts that would allow this idea to be built into a model of a major airlines network.
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