Historical Progression Tech Tree CKAN

Tech Tree that starts unmanned and progresses realistically through the years.

License: CC-BY-NC-SA

Game Version: 1.2.2

Source code: pap1723/HPTechTree

Downloads: 27,544

Author: Pap

Mod Website: Forum Thread

Followers: 64

Outdated Mod

This mod is not known to work with the latest version of Kerbal Space Program. Proceed with caution.

Historical Progression Tech Tree

This tech tree is designed to take you through the history of the human space program. I always felt like the stock tech tree was lacking and did not like the placement of the parts. There are other tech trees that utilize the stock tech tree and move parts around and that is what inspired me to create a new tech tree like this. The tree will start you with Unmanned parts before you progress to learning how to send Kerbals into Space safely.

What I did with this tree is create a linear approach to Research. The entire tree is broken down into space associated disciplines so you are not required to research new fuel tanks before you get bigger and better engines. This allows the player to drive their research focus. If you as the player wants to get the next tier of electronics to support your craft, you have that option.


    • Rocket Engine Parts
    • Jet Engine Parts
    • Rocket Fuel Tanks
    • Liquid Fuel Tanks
    • Advanced Fuel Tanks
    • Fairings
    • Advanced Wings
    • Nose Cones
    • Intakes
    • Adapters
    • Decouplers
    • Landing Gear
    • Service Bays
    • Fuel Ducts
    • Docking Ports
    • Rover Wheels
    • Probe Cores
    • RCS
    • MonoProp Tanks
    • Winglets
    • Reaction Wheels
    • Command Pods
    • Cockpits
    • Parachutes
    • Heat Shields
    • Life Support
    • All Science Parts
    • Power Generation
    • Power Storage
    • Antennas
    • Heat Control


The tiers are organized from left to right and are listed in numerical order. These are the tiers and the corresponding years that I have used for the placement of the parts.

TIER 1: 1956 and Earlier This only includes the starting node with many more parts moved to the starting node than in Stock. There are also a node for Wings and Structural Pieces to remove them from the other nodes.

TIER 2: 1957 - 1958 This was the era when we moved from Sounding Rockets to ICBM's and finally to our first satellites like Sputnik and Explorer 1.

TIER 3: 1959 During this time, humans successfully flew by the Moon with the Luna program as well as developed the first techniques of returning capsules from space.

TIER 4: 1960 - 1963 These years are when Manned spaceflight first happened. Yuri Gregarin became the first person in space and in orbit, with Vostok 1 and the US launched astronauts in the Mercury Program. The first unmanned missions to another planet took place with flybys of Venus.

TIER 5: 1964 - 1966 This tier was when we progressed from single manned flights to multiple people in the same spacecraft. The duration of the flights in space increase from short times to up to two weeks. The techniques used to rendezvous and dock ships together were devloped during these years as well as the first landing on the Moon with Luna 9.

TIER 6: 1967 - 1971 We landed men on the Moon! This was the ultimate goal of both the US and USSR and the technology developed for huge rockets to launch men to the Moon as well as other unmanned spacecraft to Mars and Venus.

TIER 7: 1972 - 1979 This was the time when humans learned how to live in space. The Soviets launched their Salyut space station program and the United States did the same with Skylab. The first missions to the outer planets also took place with Pioneer 10, Pioneer 11, Voyager 1 and Voyager 2. Viking 1 also became the first successful landing on Mars.

TIER 8: 1980 - 1993 The Space Shuttle Era where we concentrated on living in Low Earth Orbit. The Soviets launched the Mir space station which was the first modular space station.

TIER 9: 1994 - 2005 Long-term space habitation and rovers on Mars was the major focus during this period. Pathfinder became the first rover on another planet, humans lived for more than a year on Mir, and the construction of the International Space Station began.

TIER 10: 2006 - 2020 Back to the Moon or on to Mars? New technologies are being developed by many companies to provide the tools needed for humans to get back to the Moon and to also look to Mars as well.

TIER 11: 2020 - 2050 Near future technologies. These are experimental things that are in development right now that may one day help us reach farther than we ever have before.

TIER 12: 2050 and beyond These technologies have not been developed yet, or they are just on the drawing board. Things like Warp Drives and FTL travel and Nuclear Fusion will take us to the stars.


There will only be mod conflicts with mods that are new tech trees or move parts around in a different organization.

  • Community Tech Tree
  • Engineering Tech Tree
  • SETI Tech Tree
  • Unmanned Before Manned
  • RP-0
  • Open Tech Tree


Every parts mod will be supported out of the box as the design of the tech tree utilizes the existing nodes from the stock tech tree. For the most part, you will not have many conflicts as the parts will appear where the mod creator wanted them to. They will not necessarily show up in the exact proper place. If you would like to add support for your mod, please contact me. If you have a request for a mod to be fully supported, please let me know.

  • CryoEngines and CryoTanks
  • DMagic Orbital Science
  • Fuel Tanks Plus
  • SCANsat


I will be adding full integration of more mods. My plan is to continue to update the tree with new mods added. The order I will integrate the mods is determined by which I used in my own saves first.

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