Ok, I am not a programmer of any sort, however I have done some writing at an amateur level. I've done a lot of writing for my own personal RPG gaming, as well as contributed to some fan fiction sites for MMORPGs (links provided upon request).
I am currently playing 2.3, and have noticed there are some missing descriptions for some of the later aircraft. Is this something you are looking for contributions for, or is the focus now on the 2.4 version?
As a huge fan of the X-Coms, and put a good part of my free time in playing those, I'd be willing to help out with this project, if my limited skillsets should allow.