SPS Salvage and Disposal Alternatives

Cover	1
Title Page	3
Foreward	4
Table of Contents	5
List of Figures	7
Fig 1.1 Referenc Satellite Configuration	10
Fig 1.2 Salvageable SPS Mass and Generation Capacity	13
Fig 2.1 GEO Satellites - To Date and Beyond	27
Fig 2.2 Potential Space Activity Levels, 1980-2060	29
Fig 2.3 Historical and Projected Growth of Spacecraft Power and Lifetime	33
Fig 3.1 SPS Demo Satellite in Final Phases of Construction	37
Fig 3.2 Full-scale Operational SPS Configuration	38
Fig 3.3 Salvage Value - Growth to Full-scale Satellite	42
Fig 3.4 Present Value of Demo Satellite When Used as an Initial Element	46
Fig 3.5 Supply & Demand for Power From Demonstration SPS Satellite	47
Fig 3.6 Salvage Value - SPS Demo Sat Used As Source of Power and Other Subsystems	48
Fig 3.7 Salvage Value of SPS Demo Sat Used as Source of Power for Other Activities	53
Fig 3.8 Salvage Value of SPS Demo Sat Useed as Source of Power and Othere Subsystems	53
Fig 3.9 LEO TO GEO Traffic Growth	56
FIg 4.1 Continued Use SPS Salvage Value	70
FIg 4.2 Decision To Decommission and SPS Satellite	71
FIg 5.1 Summary of Demo and Full-scale Satellite Salvage Applications	73
Fig 5.2 Programmatic Implication of Demo Satellite Salvage Value	77
Fig 6.1 LaGrangian Points in the Earth-Moon System	81
Fig 6.2 EOTV Configuration	84
Fig 6.3 ALternative Trajectory Modes	85
List of Tables	8
TABLE 1.1 Reference Satellite Characteristics	11
TABLE 1.2 SPS Satellite and Rectennal Salvage Value	18
TABLE 1.3 Disposal Options and Costs	21
TABLE 2.1 Tfraffic to Support GEO Platforms	34
TABLE 3.1 Demonstration Satellite Cost Structure	39
TABLE 3.2 Mass Properties of Full-scale and Demo SPS Satellites	40
TABLE 4.1 Current Oceanic Air Traffic	63
TABLE 4.2 Characteristics of Amor and Apollo Asteroids	66
TABLE 4.3 Value of SPS Satellite Materials	68
1. Introduction	9
1.1 Background	10
1.2 Approach	12
1.3 Results	17
1.4 Conclusions and Recommendations	21
1.3 Backup Documentation	23
2. A Post-2000 Mission Model	24
2.1 The Period 2000 to 2030	30
2.2 The Post-2030 Time Period	34
3. SPS Demonstration Satellite Salvage Alternatives	36
3.1 Growth to Full-Scale Satellite	41
3.2 Demonstration Satellite Use as a Power Supply for Non-SPS Space Activities	45
3.3 Power Supply for a Laser Orbit-to-Orbit Transportation System	54
3.4 Source of Space-Based Materials	57
4. Full-scale SPS Satallite Salvage Alternatives	58
4.1 Salvage for SPS Reuse	58
4.2 Power Supply for Non-SPS Space Activities	60
4.3 Power Supply for a Laser Orbit-to-Orbit Transportation System	61
4.4 Power Supply for Laser-Propelled Aircraft	62
4.5 Asteroid Capture and Mining	65
4.6 Source of Space-Based Materials	67
4.7 Miscellaneous Salvage Uses	68
4.8 Continued Use	69
5. SPS Salvage Value	72
5.1 SPS Demonstration Satellite Salvage Value	72
5.2 Full-Scale SPS Satellite Salvage Value	74
5.3 Programmatic Implications	76
6. SPS Disposal	79
6.1 Disposal Alternatives	79
6.2 Disposal Costs	86
Appendix A: Supporting Data for Value of the Demonstration Satellite Used as a Power Source for Other Activities	88

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