Studied by Douglas Aircraft Company in 1965, this rocket consisted of a whole Saturn IB with 4 strap-on SRBs that have flown on the Titan 3Einterplanetary missile carriers. All components of the vehicle have flown, but not together for this concept.[2]
References
^Wade, Mark. "UA1205". www.astronautix.com. Encyclopedia Astronautica. Archived from the original on December 28, 2016. Retrieved 10 June 2020.
^Wade, Mark. "Saturn IB-D". www.astronautix.com. Encyclopedia Astronautica. Archived from the original on December 28, 2016. Retrieved 10 June 2020.