of the energy conversion efficiency (which can reach a value in excess of 85 percent). (B.J.) Source of Abstract (Subfile): AIAA/TIS Keywords: *ANTENNA COMPONENTS; *ENERGY CONVERSION EFFICIENCY; *RECTENNAS; *SCHOTTKY DIODES; ENERGY DISSIPATION; MATHEMATICAL MODELS; OPTIMIZATION Subject Classification: 7544 Energy Production ?< Conversi on (1975-) An electric propulsion transportation system from low- earth orbit to geostationary orbit utilizing beamed microwave power. BROWN, W. C. (Raytheon Co., Microwave Power Transmission Dept., Waltham, MA); GLASER, P. E. (Arthur D. Little, Inc., C ambridge, MA) (United Nations, Symposium on Solar Energy from Space, Vienna, Austria, Aug. 9-21, 1982) Space Solar Power Review (ISSN 0191-9067), vol. 4, no. 1-2, 1983, p. 119-129. 10 Refs. Language: Eng1ish . Country of Origin: United States. Country of Publication: United States Document Type: JOURNAL ARTICLE Most documents available from AIAA Technical Library J o u r n a 1 A n n o u n c e m e n t: IA A8408 An electric propulsion t ran sport at. i on system from low- earth orbit to geostationary orbit that is based upon microwave power transmission technology derived from studies of the Solar Power Satellite is described. The ion e nqin es in t he t ra n s port ation vehic1e are supp1i ed wit h d.c. electrical power that is obtained from a microwave rectenna, on the vehicle that collects and rectifies power from a microwave beam originating from a transmitter located on the earth near its equator. As the transportation vehicle pas s es over the tran s m11ter on eac h re vo1ut i on, it recei ves power first at low duty cycle and then rapidly at longer duty cycle as it gains in altitude. The paper contains estimates of transit times from low-earth orbit to geostationary orbit and estimates of transportation costs for a typical scenario. These estimates indicate acceptable transit times to geostationary orbit and costs that are much less than existing chemical propulsion methods. (Author) Source of Abstract. (Subfile): AIAA/TIS Keywords: ^ELECTRIC PROPULSION; *MICROWAVE TRANSMISSION; *SPACE TRANSPORTATION; ^SPACECRAFT PROPULSION; *TRANSFER ORBITS; GEOSYNCHRONOUS ORBITS; PERFORMANCE PREDICTION; SOLAR POWER SATELLITES; SPACECRAFT TRAJECTORIES; TECHNOLOGY ASSESSMENT Subject Classification: 7520 Spacecraft Propulsion « Power (1975-) Analytical calculation of a high-efficiency microwave rectifier with a Schottky-barrier diode. Analiticheskii raschet SVCh vypriami tel ia s boi shim KF'D na di ode s bar ' erom Shotki . BOIAKHCHIAN, G. P.; BANKE, V. A.; LESOTA, S. K. ;
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