I must admit, working at NASA as a technical writer would be an interesting experience indeed!
I came across this handbook for technical writers on NASA’s online archive here.
Also interesting, is an old compilation of papers on the technical writing profession on NASA’s website. I enjoyed skimming through this document, particularly the paper titled “How do Technical and Non-Technical Personnel Communicate?” by June Ferrill. I like the tips that she presents in her paper, on how to make for a more productive working relationship between subject-matter experts (ie, engineers) and technical writers.
“Elements of Understanding Technical Material” by June Ferrill
(screenshot taken from here)