Minimisation of Fuel Consumption
In the previous chapter we showed that for each given sequence of control settings, fuel consumption is minimised if the settings are changed only when the speed reaches a critical value. The duration of each phase is determined by these critical speeds. A strategy in which the control setting is changed at each of the corresponding switching times is called a strategy of optimal type. Critical speeds were discussed in the previous chapter, and it was shown how these speeds could be adjusted to produce a feasible strategy.
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