X-29: NASA's ambitious 1980s fighter jet with inverted wings

https://www.nasa.gov/centers/dryden/history/pastprojects/AD1/index.html

I didn't know if you'd ever seen this one, I figured you likely would've, I just figured I'd send it also....

i did a presentation on it while I'd been at USAF OTS, I recall, when we were doing our training on how to do PowerPoint briefings, it was an interesting project, from all I'd read while there to do the prep for the presentation...my mind tended to run that way, toward those kinds of topics, I suppose....