4. TECHNOLOGY ISSUES 4. 1 Control System 4-1 4. 1. 1 Evaluation of Alternate Power Transfer and Drive Devices 4-1 4. 1. 2 Detailed Control System Analysis 4-2 4.2 Structural System 4-3 4. 2. 1 Composite Structures and Assembly Techniques 4-3 4. 2. 2 Tension Brace Antenna Feasibility Assessment 4-4 4. 2. 3 Local Crippling Stress Evaluation 4-4 4.2.4 Design Environments 4-5 4. 2. 5 Optimum Antenna Structures 4-5 4.2.6 Finite Element Model Development 4-6 4. 2. 7 Composite Waveguide 4-6 4.3 Thermal System 4-7 4. 3. 1 Maximum Temperature 4-7 4.3.2 Transient Analysis 4-8 4.4 Assembly 4-9 4.4. 1 Assembly Cost 4-9 4.4.2 Man’s Role in Assembly and Maintenance 4-10 5. REFERENCES 5-1 VOLUME IV - Sections 9 through 14 with Appendices H through K 9. RECEIVING ANTENNA 9. 1 Microwave Rectifier Technology 9*1 9.2 Antenna Approaches 9-9 9.3 Topology of Rectenna Circuits 9*14 9.4 Assembly and Construction 9*21 9. 5 ROM Cost Estimates 9*21 9. 6 Power Interface Estimates 9*25 9. 6. 1 Inverter System 9*30 9.6.2 Power Distribution Costs 9*30 9. 6. 3 System Cost 9*31 9.7 Conclusions and Recommendations 9-31
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