Fig. 4. Cassegrain transmitter for space station. than 3 m. Table 2 indicates the typical specifications of proposed laser propulsion utilizing the scheme of CO2 mixing EDL. In conclusion, limiting the control range of subsatellite within 100 km, the possibility of fundamental laser propulsion experiment by CO2 mixing EDL in 1990s is considered to be relatively high, if the technique for solar cell arrays of the 30 kW class is sufficiently established. REFERENCES 1. K. Kuriki. I. Kimura, and Y. Arakawa, Laser Propulsion (LAP), Proc. Space Station Symp., Japan, B-19, 1982. 2. A. Hertzberg, K.C. Sun, and W.S. Jones, A Laser-Powered Flight Transportation, Gas-Flow and Chemical Lasers, pp. 531-559, Hemisphere, 1979. 3. K. Maeno and N. Yamaguchi, Application of Glow Discharge in Supersonic N2 Flow to CO2 Mixing Laser, Proc. 14th Internal. Symp. on Rarefied Gas Dynamics, to be published, 1984. 4. K. Maeno, CO2 Gasdynamic Laser and Its Improvement in Space Technology, Proc. 2nd ISAS Space Energy Symp., pp. 218-224, 1982. 5. K. Maeno, On Simple Estimation of Characteristics for CO2/N2 Mixing Gasdynamic Laser, Proc. 4th Int. Symp. on GCL (Italy, 1982), Plenum, New York, to be published, 1984.
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