Thrust-specific fuel consumption. engines define specific fuel consumption (SFC) as fuel consumed per unit of produced thrust or power. The formula for specific fuel consumption depends on whether you’re measuring it in terms of thrust or power.
For (TSFC), the formula is:
Where:
- TSFC is the thrust-specific fuel consumption (typically measured in units like kg/N·s or lb/lbf·hr),
- Fuel Flow Rate is the rate at which fuel is consumed by the engine (typically measured in units like kg/hr or lb/hr), and
- Thrust is the force produced by the engine (typically measured in units like Newtons (N) or pounds-force (lbf)).