If you aren't interested in building from scratch, the SFS community has shared thousands of blueprints. Here is where to look:
Flight profile: Activate the Valiants only in vacuum. Their specific impulse (Isp) of 350s is the closest you’ll get to real NTRs (900s in reality). For modded SFS, the SFS Nuclear Pack mod adds true NTRs with Isp > 800s.
Nuclear propulsion in real life offers double the efficiency of chemical rockets. In SFS, replicating this requires clever staging and fuel management. A well-made SFS nuke blueprint can:
If you’re on the SFS Steam version or use mods, the possibilities expand: sfs nuke blueprint
Example modded blueprint: Use a 12m-wide fuel tank as the warhead, propelled by 6 modified Frontier engines. Aim for a small moon at 5,000 m/s – the result will be a visible terrain deformation (mod-dependent).
For the dedicated SFS warmonger, here is a blueprint for a reusable nuclear bombardment platform.
Structure:
Orbital deployment: The platform orbits at 150 km. To bombard a surface target, detach a drone, perform a de-orbit burn using its RCS, and let it slam into the target at terminal velocity (~1,100 m/s). The mothership repositions using Ion engines.
This blueprint is terrifyingly effective and perfectly fits the "SFS nuke" fantasy.
Understanding the real science enhances your build. Nuclear thermal rockets work by passing liquid hydrogen through a reactor core, heating it to 2,500°C, then expanding it through a nozzle. In SFS, your Valiant engines simulate this, albeit with lower performance. Kinetic impactors are real – NASA’s DART mission successfully changed an asteroid’s orbit by slamming into it. Your SFS nuke blueprint is essentially a DART on steroids. If you aren't interested in building from scratch,
In the vast, physics-driven sandbox of Spaceflight Simulator (SFS), players constantly push the boundaries of rocketry. Among the most discussed—and often misunderstood—concepts is the "SFS nuke blueprint." While SFS does not feature actual nuclear warheads, the term refers to two distinct engineering philosophies: Nuclear Thermal Propulsion (NTR) for efficient deep-space travel, and high-energy kinetic impactors designed to "nuke" asteroids or other planetary bodies. This article provides a comprehensive blueprint for designing, testing, and flying nuclear-class systems in SFS.
A functional “Nuke” stage blueprint in SFS consists of:
| Component | Quantity | Purpose | |-----------|----------|---------| | Nuclear Engine | 1–4 | Primary propulsion (e.g., Valiant or modded NERVA) | | Large Liquid Fuel Tanks | 4–6 | Fuel storage (no oxidizer) | | Structural Struts | 2–4 | Secure engine cluster to fuel tank | | Probe Core | 1 | Flight control | | Radiators (Modded) | 2+ | Dissipate heat (if using realism mods) | | Decoupler | 1 | Separate from launch vehicle | Example modded blueprint: Use a 12m-wide fuel tank