Specific Range Calculator
Calculate specific range (SR) - distance traveled per unit of fuel consumed.
Specific Range Formula
Specific Range:
SR = Ground Speed / Fuel Flow
Range:
Range = SR x Total Fuel
Typical Specific Range
| Aircraft | SR (nm/gal) | Cruise |
|---|---|---|
| C172S | 12-15 | 115 kts |
| C182T | 10-12 | 145 kts |
| PA-28-181 | 11-14 | 125 kts |
| SR22 | 10-11 | 180 kts |
SR Optimization
- Higher altitude = better SR (lower drag)
- Lighter weight = better SR
- Best SR speed increases with weight
- Tailwind improves SR, headwind reduces it