CONCLUSION We propose that the LAPS be tested onboard the SS. This system can be applied to the orbital transfer vehicle (OTV) in future. The technology for this system is divided into two parts. One is the laser beam generation and its transport, and another is the thruster for the laser propulsion. The former is also important for the power transportation technology when the electric power generation is considered instead of the thruster. As for both of them, much more development remains to be done. REFERENCES 1. H.H. Legner and D.H. Douglas-Hamilton, CW Laser Propulsion, J. Energy, 2, 85, 1978. 2. P.F. Holloway and G.L. Bernard, Utility of and Technology for Control Power Station, A1AA-81-0449. 1981. 3. R.F. Weiss, A.N. Pirri, and N.H. Kemp, Laser Propulsion, Aeronaut. Astronaut., 50-58, 1979.
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