ETT is a pinwheel design that is grouped into branches of related engineering disciplines.
Premise
Do the Kerbals discover rocketry before winged flight? You decide. Both winged flight and rockets first options. ETT also has an "End Game" so you can play the campaign game with a built in goal.
I love to hear new ideas and don't be afraid to let me know if I have a part or two out of place.
Listed on CKAN or Download at SpaceDock - May break saved games.
(May 5, 202
I was trying to get this to work yesterday as well, I ended up removing HETTN and manually cleaning out nodes I wasn't using in the ETT cfg. Then I realized I would want an update of the mod and was likely to add more mods that would use parts I had culled out...
I edited the 'Eng Tech Tree.cfg' in Notepad++ and just did a replace all of 'hideempty = false' with 'hideempty = true' and that accomplished what I want, getting rid of about 40 empty nodes. I think the issue with HETTN might be d