Aug 142015
A Rockwell illustration showing an almost-but-not-quite-final Space Shuttle design. The only obvious major difference between this design and actual Shuttle is the rounded dome on the nose of the ET. This *may* have been a cover over a de-orbit solid rocket motor, but if so it was a small one. Other changes include differences in the booster sep motors; this painting shows four nose BSMs in a straight vertical line and four tail BSMs in a straight vertical line. As built, the forward BSMs were in a 2X2 square array, while the at BSMs were arrayed around the nozzle. Some minor difference in thermal tile pattern on the forward fuselage of the Orbiter.
The full-rez version has been made available for $10-level patrons at the APR Patreon.