FIGURE 3.6 SALVAGE VALUE—SPS DEMONSTRATION SATELLITE USED AS A SOURCE OF POWER AND OTHER SUBSYSTEMS FOR OTHER ACTIVITIES transportation costs incurred in placing the hardware in the desired orbit. PV2 is the present value of incremental mission maintenance costs incurred as a result of using the demonstration satellite hardware in lieu of mission specific hardware. For this analysis PV2 has been assumed to be zero. PV3 is the present value of incremental demonstration satellite operations costs incurred as a result of continuing the SPS demonstration satellite operations throughout the salvage period and providing the necessary maintenance. PV4 is the present value of the increase in mission operations costs and includes those costs incurred to segment the demonstration satellite power system and to install the segmented power system on the other mission spacecraft. PV5 is the present value of the costs associated with disposing of the unused portion of the demonstration satellite. The detailed value model is indicated below with the definition of variables and nominal values for the variables also indicated.
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