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sci.aircraft-range-Breguet Calculator
Calculates aircraft range using the Breguet range equation: R = (L/D) × (v/TSFC) × ln(m₀/m_f). Long-haul aircraft achieve L/D ≈ 17–21 and TSFC ≈ 0.5–0.6 lb/lbf/hr — composite airframes and higher bypass ratio turbofans together improve range by 20–25% over older designs.
Inputs
L D Ratio
Reference formula or conversion factor shown for context.
Isp H
Reference formula or conversion factor shown for context.
W0 Kg
Body or object weight. For health calculators, usually in kg or lbs.
W1 Kg
Body or object weight. For health calculators, usually in kg or lbs.
Results
range R (km)
The difference between the maximum and minimum values.
endurance E (hours)
The result expressed in hours. Divide by 24 to convert to days.
fuel weight fraction
Mass of this component divided by total vehicle or system mass. Reducing structural weight fraction directly increases payload capacity.
Breguet: R = Isp·(L/D)·ln(W₀/W₁)
ISP (specific impulse) — rocket engine efficiency in seconds. Higher ISP means more thrust per kilogram of propellant consumed.
L/D ratio context
The proportional relationship between two quantities.
TSFC from Isp
ISP (specific impulse) — rocket engine efficiency in seconds. Higher ISP means more thrust per kilogram of propellant consumed.