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Delta-v budget - Wikipedia, the free encyclopedia - Delta-v needed for various orbital manoeuvers using conventional rockets.[7] See:[10][11] Red arrows show where optional aerobraking can be performed in that particular direction, black numbers give delta-v in km/s that apply in either direction. Lower-delta-v transfers than shown can often be achieved, but involve rare transfer windows or take significantly longer, see: fuzzy orbital transfers. Electric propulsion vehicles going from Mars…