Rajan Wilcox
The Boeing 787 Dreamliner is a popular wide-body aircraft known for its fuel efficiency. The 787-9 variant, for example, consumes about 5400 litres of fuel during a typical commercial flight. However, the amount of fuel burned per mile can vary depending on several factors, including the aircraft's weight, payload, engine efficiency, flight path, and weather conditions. While the 787 Dreamliner is more fuel-efficient than older aircraft, newer aircraft like the Airbus A350 also offer improved fuel efficiency, presenting direct competition to Boeing's 787 series.
| Characteristics | Values |
|---|---|
| Fuel burn per hour on a ferry flight | 3.8-5.0 t |
| Fuel burn on a normal commercial service | 5400 litres |
| Maximum range | 14,140 km |
| Maximum take-off weight | 254,000 kg |
| Fuel capacity | 126,372 litres |
| Passenger capacity | 420 |
| Fuel efficiency per aircraft mile | Higher than Airbus A350 |
| Fuel efficiency per seat | Higher than Airbus A350 |
| Fuel efficiency per seat-nautical mile | Higher than Airbus A350-1000 |
Explore related products
What You'll Learn
Fuel efficiency
Fuel-Efficient Engines and Lightweight Composite Materials: The 787 features advanced engines that are more fuel-efficient than those of previous-generation aircraft. Additionally, it is the first airliner with a mostly composite airframe, making it lighter and further contributing to fuel efficiency.
Aerodynamic Design and Advanced Technology: The aircraft's aerodynamic shape, including winglets, reduces drag and improves fuel efficiency. It also incorporates advanced computer systems that optimise routes and aircraft loading, enhancing fuel efficiency.
Seating Configuration and Passenger Capacity: The 787-9, a variant of the 787, typically seats 420 passengers, slightly fewer than its Airbus competitor. However, the 787-9 excels in fuel efficiency per seat due to its lighter weight and efficient configuration.
Range and Maximum Take-off Weight: While the 787-10 has a shorter range than its Airbus counterpart, it still offers impressive fuel efficiency. Its maximum range is 11,910 km, and its maximum take-off weight is 254,000 kg, contributing to overall fuel efficiency.
Comparison with Other Aircraft: The 787 Dreamliner is 20% more fuel-efficient per passenger kilometre than previous-generation aircraft. For example, compared to the Airbus A380, the 787 burns half as much fuel per hour. Additionally, airlines such as Norwegian Air Shuttle have achieved high fuel efficiency using the 787-8, thanks to a high passenger load factor and efficient seating configuration.
The Boeing 787 Dreamliner sets a standard for fuel efficiency in commercial aviation, and its design influences the development of future aircraft, with sustainability as a key focus.
How Far Can You Drive on Empty?
You may want to see also
Explore related products
Fuel burn per passenger
The fuel burn per passenger for the 787 can be calculated by considering its fuel efficiency and passenger capacity. The fuel efficiency of an aircraft is typically measured in litres or gallons per 100 kilometres or per nautical mile. The 787 is known for its fuel-efficient engines, lightweight composite material airframe, and aerodynamic design, all contributing to reduced fuel consumption.
The passenger capacity of the 787 varies depending on the seating configuration chosen by the airline. The standard configuration for the 787-9 accommodates 290 passengers, while the 787-8 has a capacity of 242 passengers. By dividing the fuel burn by the number of passengers, we can estimate the fuel burn per passenger.
For example, let's consider a 787-9 on a long-haul flight with a full passenger load. If the aircraft burns 5,400 litres of fuel during the flight, that equates to approximately 18.6 litres per passenger, assuming a full 290-passenger capacity. This calculation provides a rough estimate, as fuel burn can vary based on factors such as flight distance, payload weight, cruising altitude, and weather conditions.
Comparatively, the Airbus A380, a larger aircraft, burns twice as much fuel per hour as the 787-9, but it offers almost double the number of seats. This highlights the importance of fuel efficiency per passenger, especially on long-haul routes where fuel consumption is a significant cost factor.
Fuel Dilution: When Does It Become a Concern?
You may want to see also
Explore related products
Fuel burn on a ferry flight
A ferry flight, or positioning flight, is a non-revenue-generating flight used for the delivery or movement of an aircraft. This could be for returning the aircraft to base, delivering it to a customer, moving it from one base of operations to another, or moving it to or from a maintenance facility.
The fuel burn on a ferry flight depends on a multitude of factors, including the aircraft's empty weight, payload, engine efficiency, flight path, and weather conditions. For example, a Boeing 747 burns 1 gallon of fuel every second, totalling 18,000 gallons in a 5-hour flight. On the other hand, an Airbus A350 consumes about 38 pounds of fuel per nautical mile, which is approximately 17,000 gallons of fuel for a 7-hour flight from New York to London.
The Boeing 787-9 burns approximately 2,700 gallons of fuel per hour during a typical commercial flight. However, there is limited information on the fuel burn of a 787-9 on a ferry flight. On a ferry flight, the payload is zero, so the aircraft can fly at its maximum range of around 9400 nautical miles. To calculate the fuel burn, we can use the formula:
$$ \frac{\text{TOW}}{\text{LW}} = \exp \left( \frac{R \cdot g \cdot b_f}{v \cdot L/D} \right) = \exp(f \cdot R) \$$
Where:
- TOW is the takeoff weight
- LW is the landing weight
- R is the flight range
- G is gravity
- Bf is the drag coefficient
- V is the true airspeed
- L/D is the lift-to-drag ratio
By plotting the fuel burn as a function of range, we can estimate the total fuel burn on a ferry flight. Additionally, there are methods to estimate the total required fuel for a flight, which involve calculating the average fuel burn per hour and the estimated time en route for each leg of the flight. These methods can be taught during flight training to improve fuel management skills.
Strategic Offloading: KC-135R Fuel Capacity and Beyond
You may want to see also
Explore related products
Fuel capacity
The Boeing 787 Dreamliner is a highly fuel-efficient aircraft, with a maximum fuel capacity of 126,372 litres. On a ferry flight, the 787-9 burns between 3.8 and 5.0 tonnes of fuel per hour, or about 5400 litres when on a normal commercial service. The 787 is known for its fuel efficiency per aircraft mile and per seat, outperforming its competitors like the Airbus A380, which burns twice as much fuel per hour.
The 787's fuel efficiency is achieved through a combination of factors. Firstly, it has more fuel-efficient engines. Secondly, it has a lighter composite material airframe, which reduces overall weight and improves fuel economy. Additionally, the 787 features more aerodynamic shapes, winglets, and advanced computer systems that optimise routes and aircraft loading. As a result, the 787 produces 20% fewer emissions than conventional aluminium airliners.
The fuel efficiency of the 787 has significant implications for airlines and their operations. For example, on transatlantic routes, Norwegian Air Shuttle's use of the 787-8 resulted in the highest fuel efficiency of 44 pax-km/L, thanks to a high passenger load factor and seat density. In contrast, British Airways' use of the fuel-inefficient 747-400s resulted in lower fuel efficiency due to a lower seat density and higher premium seating.
While the 787 excels in fuel efficiency, it's important to note that fuel consumption and costs are dependent on various factors, including flight takeoff weight, flight time, cruising altitude, passenger count, baggage weight, and flight path. These variables can significantly impact the overall fuel efficiency and costs for airlines operating the 787 or any other aircraft.
The Massive Saturn V: Fueled and Ready
You may want to see also
Explore related products
Fuel efficiency compared to other aircraft
The Boeing 787 Dreamliner is one of the most abundant aircraft in the sky, thanks to its innovation, versatility, and fuel efficiency. The 787s, along with the Airbus A350s, are setting benchmarks in terms of being less fuel-dependent without compromising the flight experience.
The 787's electrically powered air conditioning system is far more efficient than that of its predecessor, the 747. The 787 can cool its flight deck and cabin much faster, and its air conditioning system does not rely on high-pressure air from the engines, allowing all of the high-pressure air to be used for thrust. This makes the engines more fuel-efficient and reduces carbon emissions.
The fuel consumption of an aircraft depends on many factors, including the aircraft's empty weight, carried payload, engine efficiency, flight path, and weather conditions. However, an Airbus A380 burns twice as much fuel per hour as a Boeing 787-9, despite the A380 having almost double the number of seats. Similarly, modern twin-engine aircraft like the Airbus A350 consume 38 lb of fuel per nautical mile, while a Boeing 747 burns only 0.01 gallons per person onboard for every mile it travels. This means that the 747 achieves 100 miles to the gallon for every passenger, making it nearly twice as fuel-efficient as a car carrying one person.
The Boeing 787 Dreamliner's fuel efficiency has made it a favorite among airline cost accountants. Choosing a 787 over other aircraft can give airlines millions of dollars in savings.
Fuel Tank Capacity of a 2006 F350 Super Duty
You may want to see also
Frequently asked questions
Fuel consumption for the 787 depends on a variety of factors, including the number of passengers, baggage weight, flight length, and conditions. On a ferry flight, the 787-9 burns between 3.8 and 5.0 tons of fuel per hour. On a normal commercial flight, the 787-9 burns about 5400 litres.
The 787 Dreamliner is 20% more fuel-efficient per passenger kilometre than previous-generation aircraft. It is more fuel-efficient than the Airbus A380, which burns twice as much fuel per hour. The 787-9 is also more fuel-efficient than the Airbus A350 on a per-seat basis. However, the A350 has a longer range and greater maximum take-off weight.
In addition to the factors mentioned earlier, the fuel efficiency of an aircraft depends on the aircraft's empty weight, carried payload, efficiency of the engines, flight path, and weather conditions. The design of the aircraft also plays a role, with newer aircraft like the 787 Dreamliner using lightweight composite materials and more aerodynamic shapes to improve fuel efficiency.
