Auxiliary Power Generating System for a Large Space Laboratory Presented as Preprint 64-719 at the Third Biennial Aerospace Power Systems Conference, Philadelphia, Pa., September 1-4, 1964. This study was conducted by the Missile and Space Systems Division of the Douglas Aircraft Company, Inc. Parts of this work were performed under NASA Contract No. HAS9-1688 for the Manned Spacecraft Center.Acknowledgment is given to the members of the NASA and Douglas team that helped make this paper possible, particularly E. H. Oiling, Head, Space Station Office, NASA-MSC; J. D. Leshko, Aero-Space Technologist, NASA-MSC; and C. E. Starne s, LORL Study Director, Douglas Aircraft Company. Acknowledgment is also given to R. J. Denington, NASA-LeRC; D. Denby of NASA-MSC; and C. H. Shinbrot of Douglas Aircraft Company for their technical comments and assistance

The results of a study of auxiliary power generating systems for a large 24-man space laboratory for the post-1970 time period are presented. Solar dynamic, nuclear Snap 8, and solar cell-battery units vere investigated as possible auxiliary power systems capable of generating 18 to 40 kw of electrical power. Tradeoffs in weight, cost, reliability, solar area deployed and/or radiator area were performed for the various systems. The power required for subsystem operation and experimentation was established at 27 kw. On the basis of the tradeoffs and the 27 kw design load, the solar dynamic Brayton system was recommended for the laboratory.