Helicopter Aerodynamic Power Required & Fuel Burn Calculator
Calculate induced, profile, and parasite power curves, bucket airspeed, and hourly fuel burn (L/hr & GPH).
Input Parameters
Calculation Results
Visual Growth Breakdown
Formula & How Helicopter Aerodynamic Power Required & Fuel Burn Calculator Works
Helicopter power required follows a U-shaped 'bucket' curve: high in hover due to heavy induced drag, dropping to a minimum around 50–60 knots as effective translational lift (ETL) takes effect, before rising sharply at high speed due to parasite fuselage drag ($P_p \propto V^3$).
- Enter Helicopter Model Preset: Input your target parameter value.
- Enter Cruise Forward Airspeed (KIAS) (KIAS): Input your target parameter value.
- Enter Helicopter Weight (kg) (kg): Input your target parameter value.
- Enter Planned Flight Duration (Hours) (hrs): Input your target parameter value.
- Apply Formula: Calculate using
Total Power = P_induced (translational lift) + P_profile + P_parasite (V³) | Mission Fuel = Hourly Burn × Flight Hours. - Review Results: View exact computed answers, metrics, and worked mathematical proofs.
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Frequently Asked Questions (FAQs)
What is the bucket speed on a helicopter power curve?
The 'bucket' speed is the airspeed at the bottom of the power curve (usually 50–65 knots) where total power required is at its absolute minimum. Flying at this speed gives the maximum endurance (longest time aloft).
Authoritative Standards & Verified Reference Citations
Calculations and mathematical logic on this page are grounded in published statutory rules, regulatory standards, and official government data published by the following bodies:
CASR Part 91 general operating and flight rules, Part 121 fuel reserves, and flight crew licensing standards.
Aviation weather services, standard atmosphere (ISA) profiles, METAR/TAF aerodrome weather reports.
Aeronautical Information Publication (AIP), En Route Supplement Australia (ERSA), and airspace procedures.
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