
A tech tree extension mod which adds a progression through propellants and other chemicals, parallel to the main tech tree.
This mod is part of the Chemical Technologies suite and is utilised by Chemical Propulsion (1.6+).
Each node of the Chemical Tech Tree contains a single part upgrade which is disabled by default and must be activated via a ModuleManager patch to appear in the game:
@PARTUPGRADE[chemical-tech-tree-partupgrade-LqdMethane]
{
%chemTechActive = true
}
Chemical Tech Tree is entirely separate to the main tech tree, so is functionally compatible with any other tech tree mod.
The positions of the tech tree nodes are adjusted to fit nicely together for the following tech trees:
Community Tech Tree (3.4.5) and any other tech with the same structure, e.g. Probes Before Crew (3.0.0)


Gradual Progression Tech Tree (0.3.3)






Chemical Tech Tree is also compatible with Skyhawk Science System (1.1.2), but the part upgrades are integrated into the main tech tree rather than in separate nodes like the above, since the Skyhawk tech tree is designed with propellant-unlock nodes already.
Distributed under the GNU General Public License.
Raw stats are from the beginning of time until now. Each follower and download entry represents one hour of data. Uneventful hours are omitted.