Nova Prime
2.5M lbf class
The flagship sea-level engine. The reference architecture from which the family derives its cycle, materials, and design language.
The F1 Nova family extends the Prime standard into a coherent lineup of derivatives — each tuned to a thrust band and mission profile, all sharing a common methane FFSC lineage. Thrust bands are presented at a conceptual class only.

Each member inherits the program's cycle and design discipline, then specializes for its role. No proprietary specifics are shown — only intended class and use case.
2.5M lbf class
The flagship sea-level engine. The reference architecture from which the family derives its cycle, materials, and design language.
Intermediate thrust band
A scaled derivative for medium-lift vehicles — retaining the FFSC cycle at a thrust class suited to more compact stages.
Upper-stage class
A vacuum-optimized variant with an extended expansion profile, tuned for efficient operation beyond the lower atmosphere.
Compact thrust band
A compact sea-level engine for smaller vehicles and dense clustering, prioritizing footprint efficiency and manufacturability.
Research line
An experimental line where AI-optimized geometry is pushed furthest — a proving ground for the next generation of the family.
Relative positioning only. Values are intentionally abstract and do not disclose program specifications.