Single-Stage-to-Orbit

  1. Optional fairing around the two-man Gemini Capsule;
  2. Gemini adapter section;
  3. Transition support structure;
  4. Orbit injection / retro and control propellant tanks (6);
  5. Toroidal liquid-oxygen tank;
  6. Annular combustion chamber;
  7. Truncated plug nozzle and re-entry heat shield;
  8. Attitude-control system (4);
  9. Retractable landing legs (4);
  10. Spherical liquid-hydrogen propellant tank.

Frontiers of Space
Philip Bono & Kenneth Gatland
Macmillan, 1969

Image credit: Douglas
Images: Numbers Station

DAC 23047

Image credit: Douglas
Image source: SDASM Archive

Clustered Core

Image credit: Douglas
Image source: SDASM Archive

Slide Presentation Scan

Image credit: Douglas
Image source: SDASM Archive