Sylvie Willis
The cost of helicopter fuel depends on several factors, including the type of helicopter, the type of engine, and the fuel efficiency. Helicopters typically use one of two types of fuel: AvGas or Jet A. The price of these fuels varies, with AvGas being more expensive due to its higher octane rating and lead content. The amount of fuel consumed also varies based on the size of the helicopter and the conditions in which it is flown. For example, a larger helicopter with a turbine engine will burn more fuel than a smaller piston-engine helicopter. Additionally, flying in hot weather or with a heavier load will increase fuel consumption. While the cost of fuel is only a small fraction of the overall operating cost of a helicopter, it can still be a significant expense, especially for larger helicopters with higher fuel consumption rates.
| Characteristics | Values |
|---|---|
| Types of Helicopter Fuel | AvGas (100LL), JetA, Jet A-1 |
| Fuel Price | AvGas: $5.14/gallon, JetA: $4.04/gallon, Jet A-1: $1.66/gallon |
| Fuel Efficiency | Varies based on helicopter size, type of engine and fuel, and design |
| Fuel Consumption | 5-20 gallons/hour for small piston engine helicopters, 25-1100 gallons/hour for larger turbine helicopters |
| Example Fuel Consumption | Bell 212: 410 litres/hour, CH-47 Chinook: 350-400 gallons/hour |
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What You'll Learn
Helicopter fuel types: AvGas and JetA
The price of helicopter fuel depends on the type of helicopter, the size of its fuel tank, and how much fuel it burns. Helicopter fuel types vary, with some helicopters with piston engines burning AvGas, and others with turbine engines burning JetA.
AvGas, or aviation gasoline, is a highly refined form of gasoline for aircraft, with an emphasis on purity, anti-knock characteristics, and the minimization of spark plug fouling. It is often referred to as 100LL (low-lead) and is sold in much lower volumes than jet fuel. AvGas is the only remaining lead-containing transportation fuel, with the lead preventing damaging engine knock or detonation that can result in sudden engine failure. It is a flammable liquid that can easily ignite at temperatures down to -40°C and below. It is manufactured to keep flowing in low-temperature conditions and can act as a coolant for the engine oil, maintaining clean injector nozzles.
JetA, or jet fuel, is a gas turbine fuel used in propeller and jet fixed-wing aircraft and helicopters. It has a low viscosity at low temperatures, a limited range of density and calorific value, burns cleanly, and remains chemically stable when heated to high temperatures. It is also similar to diesel fuel and can be used in diesel engines. Jet fuel is available in most places in the world, while AvGas is only widely available in a few countries. It is the most popular aviation fuel nowadays and is used in most aircraft, including helicopters. It is straw-colored and is dispensed from a special nozzle called a J spout or duckbill.
The cost of helicopter fuel is always just a small fraction of the overall operating cost. However, it can still be a fairly large expense for larger helicopter types, especially multi-engine turbines. For example, the twin-engine tandem-rotor CH-47 Chinook burns between 350-400 gallons of jet fuel an hour in flight.
The amount of fuel burned also depends on the helicopter's make and model, as well as the conditions under which it is flying. For instance, a helicopter will burn less fuel when cruising alone on a cool day near sea level, compared to operating near maximum gross weight on a hot day.
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Fuel burn rates
The fuel burn rate of a helicopter is an important factor when considering the cost of operations. The price of fuel for helicopters is generally the same as for other aircraft, but the difference in costs arises from the amount of fuel consumed and the capacity of the fuel tank.
Helicopters generally use one of two types of fuel: AvGas (also known as 100LL) or JetA. AvGas is used in helicopters with piston engines and is similar to the fuel used in cars. JetA is used in helicopters with turbine engines and is the same fuel used in jet airplanes. The price of aviation fuel varies, with AvGas costing more than JetA at $5.14 per gallon compared to $4.04 per gallon.
The fuel burn rate of a helicopter depends on various factors, including the make and model of the helicopter, the speed and altitude of flight, weather conditions, the number of passengers and cargo, and the stage of flight (take-off, cruising, hovering, etc.). For example, the Bell 212 helicopter burns around 100 gallons of jet fuel per hour, while the twin-engine CH-47 Chinook burns between 350-400 gallons per hour. Smaller piston engine helicopters have a lower fuel burn rate, ranging from 5 to 20 gallons per hour, while larger turbine helicopters can burn up to 1100 gallons per hour.
The fuel efficiency of a helicopter also plays a role in fuel consumption. Piston-powered helicopters are generally more fuel-efficient than turbine-powered helicopters, as they burn fuel at a lower rate. Additionally, the design of a helicopter affects fuel efficiency, as helicopters require more fuel to generate thrust from their rotors compared to airplanes.
Overall, while fuel cost is a small fraction of the overall operating cost for helicopters, it can still be a significant expense, especially for larger helicopter types with higher fuel burn rates.
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Fuel tank size
The fuel tank size of a helicopter is a crucial factor in determining its range and endurance. While the exact fuel tank capacity varies across different helicopter models, we can gain insights into the fuel tank sizes and fuel consumption rates of helicopters through various sources.
One source mentions that their helicopter has two tanks supplying the engine with fuel, with a total usable fuel capacity of around 46.5 gallons. With this fuel load, the helicopter can fly for approximately 2.5 to 3 hours, covering about 300 miles under favourable wind conditions. This equates to a fuel consumption rate of roughly 15.5 to 18.6 gallons per hour, depending on factors such as wind conditions and weight.
Turbine-powered helicopters, such as the Bell 212, burn around 100 gallons of jet fuel per hour, regardless of whether they are cruising, hovering, or idling. Larger helicopters, like the twin-engine CH-47 Chinook, have an even higher fuel consumption rate, burning between 350 and 400 gallons of jet fuel per hour during flight.
On the other hand, piston-powered helicopters are generally more fuel-efficient. Small piston engine helicopters burn fuel at a rate of 5 to 20 gallons per hour, while larger piston-equipped helicopters consume 25 to 1100 gallons per hour. This variation in fuel consumption rates is due to factors such as engine type, size, and operating conditions.
To increase the operational range of helicopters, companies like Safran Aerosystems offer innovative solutions. They provide lightweight, flexible fuel tanks that comply with toughness standards, suitable for helicopters weighing between 1 to 16 tons. These auxiliary fuel systems enhance the range and endurance of helicopters, especially for remote operations and extended missions.
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Fuel costs
The fuel cost for helicopters is a small fraction of the overall operating cost. However, it can still be a large expense for larger helicopter types, especially multi-engine turbines. The price of fuel for helicopters is generally the same as for other aircraft and depends on the type of fuel and the volume purchased. For example, the owner of a turbine engine-powered helicopter will pay the same price per kiloliter of jet A or jet A-1 fuel as a jet owner. However, the total amount of money they will pay will differ due to the varying fuel requirements of different aircraft.
Helicopters typically use one of two types of fuel: AvGas (also known as 100LL) or Jet A. AvGas is used in piston-engine helicopters and is similar to the fuel used in cars. Jet A is used in turbine-engine helicopters and is the same fuel used in jet airplanes. The price of these fuels varies over time and by location, but they do not usually cost the same. For example, one source indicated that their local airport sold AvGas for $5.14 per gallon and Jet A for $4.04 per gallon.
The amount of fuel burned by a helicopter depends on various factors, including its make and model, the size of its engine, the operating conditions, and the weight it is carrying. For example, a helicopter will burn less fuel when cruising alone on a cool day at sea level compared to operating at maximum gross weight on a hot day. The Bell 212 helicopter, for instance, burns around 100 gallons of fuel per hour, while the CH-47 Chinook burns between 350-400 gallons per hour. Smaller piston engine helicopters generally consume less fuel than larger turbine helicopters, with fuel-efficient small piston engine helicopters burning 5-20 gallons per hour and larger turbine helicopters burning 25-1100 gallons per hour.
To calculate the fuel cost for a helicopter trip, you need to consider the fuel efficiency of the helicopter, the distance travelled, and the fuel price. For example, assume a common commercial helicopter like the Bell 212, which consumes 410 litres of fuel per hour. For a 34-mile trip with a total travel time of 0.296 hours (including landing and taking off), the helicopter would consume around 121.36 litres of fuel or 32.06 gallons. With Jet A1 fuel priced at approximately $1.66 per gallon, the fuel cost for this trip would be around $53.22. For a daily round trip, the fuel cost would be approximately $106.44.
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Fuel efficiency
The fuel efficiency of a helicopter depends on several factors, including its size, engine type, fuel type, design, operating conditions, and weight.
Helicopters generally use one of two types of fuel: piston engines burn AvGas (also known as 100LL), while turbine engines burn JetA. The price of these fuels is similar to that of auto fuel, with prices varying depending on location and supply. For example, one source mentions that their local airport sells AvGas for $5.14/gallon and JetA for $4.04/gallon.
The size of the helicopter impacts fuel efficiency, as larger helicopters can carry more fuel but may not be as efficient as smaller helicopters. The type of engine also plays a significant role, with piston-powered helicopters being more fuel-efficient than turbine-powered helicopters. For instance, the Robinson R-22, a single-engine helicopter, is known for its fuel efficiency, burning around 10 gallons per hour. In contrast, a larger helicopter like the Bell 212 burns around 100 gallons per hour, and the CH-47 Chinook burns between 350-400 gallons per hour.
Operating conditions and weight also affect fuel efficiency. For example, a helicopter cruising near sea level on a cool day with a light load will be more efficient than operating at maximum gross weight on a hot day. Additionally, wind conditions can impact the distance travelled, with headwinds reducing the overall range.
When compared to other aircraft, helicopters are not known for their fuel efficiency. Their rotor systems and ability to hover, take off, and land vertically require more fuel than fixed-wing aircraft. However, helicopters serve crucial roles that other aircraft cannot perform, such as search and rescue or medical evacuations.
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Frequently asked questions
The price of helicopter fuel depends on the type of fuel and the location. For example, AvGas costs $5.14/gallon at one local airport, whereas JetA costs $4.04/gallon.
Helicopters generally use one of two types of fuel: AvGas (also known as 100LL) or JetA. AvGas is used in piston engines, while JetA is used in turbine engines.
The amount of fuel burned by a helicopter depends on various factors, including its make and model, the type of engine, and the conditions in which it is operating. Small piston engine helicopters burn fuel at a rate of 5-20 gallons/19-76 liters per hour, while larger turbine helicopters can burn up to 1,000 gallons/4165 liters per hour.
The cost of flying a helicopter daily depends on various factors, including the distance travelled, the type of helicopter, and the price of fuel. For example, for a 34-mile trip in a Bell 212 helicopter, the fuel cost would be around $53.22 per trip, or $106.44 for a daily round trip.
