One can expect the performance of electrically propelled vehicles to depend strongly on power-plant size, mission velocity increment, and mission duration. Figure 10.12 shows the payload ratios that one could expect for a 100-kW power plant (α = 30 kg/kW) and for a particular mission (∆u = 6000 m/s). Show, for the xenon ion thruster (whose performance is given in Table 10.6), how payload ratio depends on mission∆u (2000,6000,10,000 m/s) and on mission time (75, 150, 300 days). The thruster is to be supplied with a 100-kW power plant and is to operate with a specific impulse of 3500 s.
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