Parts Spaceplanes (SSTO/LV) [WIP]

[UriahGnu]

Download v0.3.3 (Google Drive)





MAKE SURE TO DELETE THE MOD FOLDER FIRST IF YOU ARE UPDATING!

Installation:

1. Unzip inside of your Kitten Space Agency\Content folder.
2. Open manifest.toml and add the following lines:

[[mods]]
id = "Spaceplanes"
enabled = true

To launch from the ground:

1. Start the game and open the Launch Vehicle One Test (system)
2. Go to the the View dropdown, all the way at the bottom is the Debug dropdown, from there select Show Physics Debug
3. Click the Teleport to LC-39A button!

There are still a lot of limitations for modding KSA, but this is a great first step. Enjoy!

Planned:
- Implement basic aerodynamics (lift/drag/side forces)
- Implement custom shaders, hopefully with reentry effects soon
- Full modularity when the game supports it
- Improved textures
- First person cockpit (eventually)

Change Log
v0.2
- Fixed inverted yaw (recommend using autopilot RELAX profile as it is more stable)
- Fixed RCS positions
- Added basic textures
v0.2.1
- Added Earth and Moon system
- Increased Thrust/Propellant
v0.3.0
- Added a second spaceplane (X2C)
- Changed exhaust effect colors
- Additional improvements
- Working in ksa_v2025.11.5.2819
v0.3.1-0.3.2
- Added thin film textures / improved materials
- Engine meshes are now shared and scaled
- Fixed rendering issues due to zero scale UV triangles
- Full Solar System working!
v0.3.3
- Fixed for v2844, materials now use AoRoughMetal (ORM) instead of RoughMetalAo (RMO)
- Added placeholder booster, not functional yet due to aerodynamic drag issue, but made in parts and ready for staging update
- Optimized meshes to reduce quad overdraw (no LODs supported yet)
- New textures for some parts (engines and booster parts)
- Compressed all textures to correct DDS format w/ mipmaps

Known Issues:
- KSA currently uses a simple drag sphere which we can't control, I believe it is set by the mesh bounding box max, so the drag area is quite high and you'll notice it doesn't feel right in atmosphere.

 

[Reality]

holy peak!!!

edit: yaw seems to be inverted, but otherwise im loving it

 

[UriahGnu]

holy peak!!!

edit: yaw seems to be inverted, but otherwise im loving it

Yeah I noticed that, but there seems to be an issue with the autopilot RCS, when I fixed it the RCS goes haywire, so I left it that way for now so at least autopilot works.

 

[Reality]

I'm in love...

 

[UriahGnu]

v0.2 Changes (same download link)
- Fixed inverted yaw (recommend using autopilot RELAX profile as it is more stable)
- Fixed RCS positions
- Added basic textures

 

[Thoteus]

This is so cool!

 

[Soldier]

not bad

 

[Tahadagal]

is there a way to put it in earth + moon or the complete solar system maps? Great mod btw

 

[UriahGnu]

is there a way to put it in earth + moon or the complete solar system maps? Great mod btw

Yes, I'll update it this evening with that and a few other goodies!

 

[Kraken]

Mod looks great but I am having trouble getting it to work

I am able to make it to the startup menu with the mod installed, and then my game crashes when it starts to load in the mod
I tried a fresh install of my Content folder and the problem always arises when I throw in the mod

 

[UriahGnu]

Mod looks great but I am having trouble getting it to work

I am able to make it to the startup menu with the mod installed, and then my game crashes when it starts to load in the mod
I tried a fresh install of my Content folder and the problem always arises when I throw in the mod

Just confirmed with two others it is working, not sure for now sorry. Are other mods working?

 

[ResoluteRug3471]

Irrelevant but aren't you the guy who was working on that mars game?

 

[UriahGnu]

Irrelevant but aren't you the guy who was working on that mars game?

Still am, just very slow progress with one person (and a few helping from time to time).

 

[Aayan]

how do i add unlimited fuel?

 

[UriahGnu]

how do i add unlimited fuel?

Afaik there isn't a way to set unlimited fuel, but to achieve the desired outcome in SpacecraftParts.xml there is a line that says:
<SpecificImpulse Seconds="452" />

Set this to a much higher value, like 100000, this will make your thrust more efficient.

 

[Aayan]

Afaik there isn't a way to set unlimited fuel, but to achieve the desired outcome in SpacecraftParts.xml there is a line that says:
<SpecificImpulse Seconds="452" />

Set this to a much higher value, like 100000, this will make your thrust more efficient.

thanks

 

[UriahGnu]

I've updated the mod to include an additional spaceplane (X2C) and a bunch other improvements. Make sure to delete the old mod folder if you had it installed before!

You can change the color by editing SpaceplaneParts.xml, near the top you'll find the PbrMaterial for the X1C and X2C, just modify it like so to change the color from white to red for example, and use Spaceplane_2_RMO if you want it to be metallic.

<PbrMaterial Id="Spaceplane_X1C_Mat">
<Diffuse Path="Textures/Spaceplane_Red_Diffuse.png" Category="Vessel"/>
<Normal Path="Textures/Default_Normal.png" Category="Vessel"/>
<RoughMetalAo Path="Textures/Spaceplane_2_RMO.png" Category="Vessel"/>
</PbrMaterial>

Possible colors:

• Spaceplane_Diffuse
• Spaceplane_Blue_Diffuse
• Spaceplane_Dark_Diffuse
• Spaceplane_Red_Diffuse

 

[UriahGnu]

v0.3.1-0.3.2 Changes
- Added thin film textures / improved materials
- Engine meshes are now shared and scaled
- Fixed rendering issues due to zero scale UV triangles
- Full Solar System working!

 

[UriahGnu]

v0.3.3
- Fixed for v2844, materials now use AoRoughMetal (ORM) instead of RoughMetalAo (RMO)
- Added placeholder booster, not functional yet due to aerodynamic drag issue, but made in parts and ready for staging update
- Optimized meshes to reduce quad overdraw (no LODs supported yet)
- New textures for some parts (engines and booster parts)
- Compressed all textures to correct DDS format w/ mipmaps