https://ntrs.nasa.gov/api/citations/19800010907/downloads/19800010907.pdf The speculative "propulsion" concept'described in this paper was presented at a special session of the 15th Joint AIAA/SAE/ASME Propulsion Conference (June 18-20, 1979), "Propulsion Concepts for Galactic Spacecraft". The concept was developed as the result of private, unofficial research. NASA is not in- volved in UFO research. However, the research which may be stimulated by this paper could result in the verification of the essential elements of this concept and in feasibility studies concerning the development of a new generation of NASA spacecraft. Alan C. Holt Come across this document. What's with the disclaimer that this study was a product of UFO research? What UFO research? And by who? Did they acknowledge that a private entity had in its hand UFO technology? submitted by /u/Dangerous_Abies_9014 [link] [comments]