76561198026706793: Terra Invicta Propulsion and Power Planner is a fan-made web application for analyzing drives, power plants, and ship designs in Terra Invicta. It helps players understand which drives and reactors are obsolete, which drive–reactor combinations are valid, and how those combinations perform for different mission profiles.

2025-12-11T04:43:34Z

Terra Invicta Propulsion and Power Planner is a fan-made web application for analyzing drives, power plants, and ship designs in Terra Invicta. It helps players understand which drives and reactors are obsolete, which drive–reactor combinations are valid, and how those combinations perform for different mission profiles.

← Older revision	Revision as of 04:43, 11 December 2025
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		= Terra Invicta Propulsion and Power Planner =

		'''Terra Invicta Propulsion and Power Planner''' is a fan-made web application for analyzing drives, power plants, and ship designs in ''Terra Invicta''. It helps players understand which drives and reactors are obsolete, which drive–reactor combinations are valid, and how those combinations perform for different mission profiles.

		The tool is free, browser-based, and not affiliated with Hooded Horse, Pavonis Interactive, or the Terra Invicta development team.

		== Overview ==

		The app is built using Streamlit and works from static exports of the Terra Invicta drive and power plant tables (saved HTML from the wiki). It does not scrape the wiki live and does not require local game files.

		Players select which drive families and power plants they have unlocked, configure global assumptions (such as resource abundance and how much they care about backup power or crew size), and then explore which options are dominated or viable for different ship masses and mission requirements.

		== Features ==

		; Drive obsolescence analysis
		* Unlock drives by '''family''' (for example, “Tungsten Resistojet” unlocks all x1–x6 variants).
		* Marks individual drive variants as '''Obsolete''' if they are dominated on key stats:
		** Thrust
		** Exhaust velocity
		** Power-use efficiency
		** Drive mass
		** Fuel scarcity (drives using scarce propellants are never allowed to dominate drives using only abundant resources)
		** Optional: backup power behaviour (Always / When Not Thrusting / When Thrusting / Never)
		* Optional setting: ''Don’t mark drives obsolete within the same family/class'' to preserve intra-family progression.

		; Power plant (reactor) obsolescence
		* Marks reactors as obsolete based on:
		** Max output (GW)
		** Specific power (tons/GW)
		** Efficiency
		** General use flag
		** Optional: crew size (lower crew is preferred when enabled)
		* Optional setting: ''Care about crew size'' to include or ignore crew in the dominance logic.

		; Resource-aware fuel economics
		* Lets the player mark resources as '''abundant''' or '''scarce''' (Water, Volatiles, Base metals, Noble metals, Fissiles, Antimatter, Exotics).
		* Each drive’s per-tank propellant mix is analysed and labelled '''Uses Scarce Propellant''' if it relies on any non-abundant resource.
		* Computes a configurable '''Expensive Fuel Score''' for each drive using player-set weights per resource, used in sorting and combo-level dominance.

		; Reference ship modeling
		* Global controls for a reference ship:
		** Reference payload mass (up to 300,000 t)
		** Reference propellant mass (up to 300,000 t)
		* For each valid drive + reactor combination, the app computes:
		** Reference Delta-v (km/s)
		** Reference cruise acceleration (g)
		** Reference combat acceleration (g)
		** Total wet mass (tons)
		** Power ratio (reactor output vs drive power requirement)
		** Whether the reactor has enough power for the selected drive

		; Valid drive + power plant combinations
		* Lists all drive–reactor pairs that are:
		** Non-obsolete (drive and reactor)
		** Compatible by class / “Required Power Plant”
		** Adequately powered (reactor output ≥ drive power)
		* Supports combo-level dominance:
		** A combination is marked obsolete if another combo has ≥ Delta-v, ≥ acceleration, ≥ power ratio, and ≤ Expensive Fuel Score.
		** Optional ''Hide dominated combos'' toggle.

		; Visualisation and mission search
		* Interactive scatterplot of non-dominated combos using selectable axes, such as:
		** Expensive Fuel Score
		** Reference Delta-v
		** Reference cruise/combat acceleration
		** Power ratio
		** Total wet mass
		* Mission feasibility search:
		** Player specifies target Delta-v, an acceleration constraint (cruise or combat), and a minimum payload mass.
		** The app searches over payload and propellant mass to find feasible configurations for each combo.
		** For each feasible combo, it returns payload mass, propellant mass, resulting Delta-v and acceleration, and an analytic upper bound on maximum payload.

		; Profile save/load
		* Profiles can be downloaded and uploaded as JSON, storing:
		** Unlocked drive families and reactors
		** Resource abundance flags
		** Obsolescence settings
		** Reference ship masses
		** Fuel cost weights
		* Uploads are size-limited and validated before being applied.

		== Usage ==

		# Open the web app in a browser.
		# Select which drive families and reactors you have unlocked in your campaign.
		# Configure resource abundance, optional obsolescence rules, and fuel cost weights.
		# Set a reference payload and propellant mass.
		# Use the Drives and Power Plants tabs to see which options are obsolete or dominated.
		# Review the combined Drive + Power Plant table to examine valid, non-obsolete combinations and their Delta-v/acceleration trade-offs.
		# Optionally, use the mission feasibility search to test whether specific mission profiles (target Delta-v + acceleration + payload) can be achieved.

		== Links ==

		* Live app: [https://ti-propulsion-power-planner.streamlit.app/ Terra Invicta Propulsion and Power Planner]
		* Source code: [https://github.com/maybe-improving/ti-propulsion-power-planner GitHub repository]

76561198026706793: Terra Invicta Propulsion and Power Planner is a fan-made web application for analyzing drives, power plants, and ship designs in Terra Invicta. It helps players understand which drives and reactors are obsolete, which drive–reactor combinations are valid, and how those combinations perform for different mission profiles.

2025-12-11T04:39:11Z

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