RESULTS The study results indicate that the two stage winged vehicle featuring L0X/C3H8 booster engines and LOX/LH2 upper stage engines would meet the basic requirements of the SPSS launch vehicle. Detailed weight statements of this vehicle are presented in Tables 14 through 17. Geometric description of the baseline vehicle is given in Tables 18 and 19; drawings giving typical HLLV sizes and configurations are shown in Figures 20 through 23. A chart showing a brief weight and performance summary of the baseline vehicle is given in Table 5. A complete trajectory is given in Appendix A. Although the study indicated the development of launch vehicles to meet the SPSS requirements is feasible, further study is recommended in the areas of vehicle configuration analysis, tank weights, loads and stress analyses, thermal analysis, and control capabilities.
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