I found this master's thesis "The Space Shuttle: An Attempt at Low-cost, Routine Access to Space," by Jeffrey D. Wonch, published September 1990.
This was written towards his Master of Science degree at the USN Naval Postgraduate School. The PDF is a file in their on-line archives.
I thought it might be of interest to our forum contributors.https://calhoun.nps.edu/bitstream/handle/10945/34958/90Sep_Wonch.pdf;sequence=1
EDIT: further descriptive information added and file attached.
Edit/Lar: NOTE that there is a certificate mismatch when you go to download this PDF. Proceed with caution. NOT removing the link as it seems like a useful document.