Ameer Randolph
The Boeing 747 is a fuel-guzzling behemoth, burning through approximately 1 gallon (about 4 litres) of jet fuel every second, or 36,000 gallons on a 10-hour flight. That's a staggering 10 to 11 tonnes of fuel burned every hour when cruising. To put that into perspective, a brand-new car would need to travel more than three-quarters of a million miles to burn through the same amount of fuel that a 747 uses in a 5-hour flight. With sustainability and climate change at the forefront of global concerns, the 747's fuel consumption is a significant factor in the aviation industry's carbon footprint.
| Characteristics | Values |
|---|---|
| Fuel burned per second | 0.9-1 gallons (3.4-4 liters) |
| Fuel burned per hour | 3,600-4,600 gallons (13,600-17,400 liters) |
| Fuel burned per mile | 5 gallons (12 liters) |
| Fuel burned for a 10-hour flight | 36,000 gallons (150,000 liters) |
| Fuel burned for a 5-hour flight | 18,000 gallons (68,000 liters) |
| Engines | 4 |
| Maximum fuel capacity | 238,604 liters |
| Range | 7,790 nautical miles |
| Fuel burned for a London to New York flight | 70,000 kilograms (82,353 liters) |
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What You'll Learn
A Boeing 747 burns 1 gallon of fuel every second
A Boeing 747 is a large aircraft that can carry up to 568 passengers. It burns approximately 1 gallon (about 4 litres) of fuel per second, or 10 to 11 tonnes of fuel per hour when cruising. This equates to roughly 36,000 gallons for a 10-hour flight.
When considering fuel efficiency, it is important to take into account the number of passengers on board. A 747 flying 500 passengers 1 mile uses 5 gallons of fuel per mile, which equates to 0.01 gallons per person per mile. In other words, the plane achieves 100 miles per gallon per person.
Comparing the fuel efficiency of flying to that of driving can provide useful context. A typical car achieves around 25 miles per gallon. A 2,797-mile drive from New York City to Los Angeles with two passengers would consume 112 gallons of fuel, or 56 gallons per person. In contrast, a 6-hour flight for 200 passengers between the same cities would consume 5,325 gallons of jet fuel, or 27 gallons per person.
The fuel efficiency of aircraft also varies depending on the model. The Airbus A380, the largest passenger aircraft, consumes slightly more fuel than the 747 due to its higher capacity. It uses approximately 4,600 gallons of fuel per hour, totalling about 23,000 gallons for a 5-hour flight. The Boeing 787-9, on the other hand, burns approximately 2,700 gallons per hour.
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A 10-hour flight may burn 36,000 gallons
The Boeing 747 is a fuel-guzzling aircraft, burning approximately 1 gallon (3.78 litres) of jet fuel every second, or 3,600 gallons per hour. Over a 10-hour flight, this equates to a staggering 36,000 gallons of jet fuel burned. To put that into perspective, a typical car would need to travel more than three-quarters of a million miles to burn the same amount of fuel.
The 747's fuel efficiency is further impacted by its payload capacity. While it can carry up to 568 passengers, even a partially occupied flight with only 500 passengers still burns a significant amount of fuel per person. Additionally, the aircraft's fuel efficiency is affected by factors such as its empty weight, payload, engine efficiency, flight path, and weather conditions.
Despite the high fuel consumption, when considering the number of passengers a 747 can carry, the fuel burn per person becomes more efficient. For example, on a flight with 500 passengers, the plane is burning 0.01 gallons per person per mile, resulting in 100 miles per gallon per person. This is a much more favourable comparison to the typical car's fuel efficiency of around 25 miles per gallon.
It's important to note that the 747's fuel burn rate may vary depending on other factors. For instance, during cruise flight, the 747 burns approximately 10 to 11 tonnes of fuel per hour, which equates to 2,641 to 2,904 gallons per hour. This variation in fuel burn rate is influenced by various factors, including the specific model of the 747, the efficiency of its engines, and the conditions under which it operates.
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A 5-hour flight may burn 18,000 gallons
A Boeing 747 burns approximately 1 gallon (3.78 litres to 4 litres) of fuel per second, which amounts to 18,000 gallons in a 5-hour flight. This works out to be 3,600 gallons of fuel per hour.
The fuel efficiency of a 747 can be calculated in a few different ways. One way is to consider the number of miles per gallon. The 747 covers 550 miles per hour and burns 5 gallons of fuel per mile, which amounts to 110 miles per gallon. However, when we consider that a 747 can carry 568 people, the calculation changes. A 747 flying 500 people 1 mile burns 0.01 gallons per person, which is 100 miles per gallon per person.
Another factor that affects fuel efficiency is the payload of the plane. A 747 flying from London to New York carrying 450 passengers burns approximately 70,000 kilograms of fuel, which works out to be about £41 (€52) per person.
It's important to note that modern twin-engine aircraft like the Airbus A350 are significantly more fuel-efficient than the 747, consuming 38 lb of fuel per nautical mile.
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A London to New York flight burns 70,000kg of fuel
A London to New York flight on a Boeing 747 Jumbo Jet burns approximately 70,000 kilograms of fuel. This equates to roughly 82,353 litres or £18,500 in fuel costs (based on 1 litre costing 31 pence).
The Boeing 747 burns approximately 1 gallon (about 4 litres) of fuel every second, or 10 to 11 tonnes of fuel per hour when in cruise. This means that during a 5-hour flight, a Boeing 747 will burn 18,000 gallons of fuel, and over a 10-hour flight, it might burn 36,000 gallons.
The amount of fuel burned by an aircraft depends on several factors, including the aircraft's empty weight, payload, engine efficiency, flight path, and weather conditions. For example, the Airbus A380 consumes slightly more fuel than the Boeing 747 due to its higher capacity.
When considering fuel efficiency, it's important to take into account the number of people onboard. A Boeing 747 can carry up to 568 people, and it achieves 100 miles to the gallon for every passenger. This makes it nearly twice as fuel-efficient as a car carrying one person.
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Fuel efficiency is 20% higher than older 747s
The fuel efficiency of aircraft is a measure of the transport energy efficiency of the aircraft. A Boeing 747 burns approximately 1 gallon of fuel every second, or 5 gallons of fuel per mile. Over a 10-hour flight, this amounts to 36,000 gallons of fuel. However, when we consider that a 747 can carry up to 568 people, the fuel efficiency per person becomes much more impressive. In this case, the plane is burning 0.01 gallons per person per mile, achieving 100 miles per gallon for every passenger.
Now, when we say that the fuel efficiency of the 747 is 20% higher than older 747s, we are likely referring to the comparison between the 747 and the Airbus A380, which offers a 20% increase in per-passenger fuel efficiency. The A380 consumes 4,600 gallons of fuel per hour and can carry over 800 passengers, resulting in improved fuel efficiency per passenger.
It's important to note that fuel efficiency in aircraft can be improved through various means. Firstly, reducing the weight of the aircraft and improving its aerodynamics can increase fuel efficiency. This can be achieved by minimizing parasitic drag and lift-generated induced drag, which are the two components of aerodynamic drag. Additionally, new technologies can reduce engine fuel consumption, such as higher pressure and bypass ratios, geared turbofans, open rotors, and hybrid or fully electric propulsion.
Furthermore, the efficiency of an airline depends on various factors such as fleet fuel burn, seating density, air cargo, and passenger load factor. Operational procedures like maintenance and routing can also contribute to fuel savings. For example, flying at optimum altitudes and speeds can improve fuel economy.
In conclusion, while the 747 is a fuel-efficient aircraft, especially when considering the number of passengers it can carry, newer aircraft like the Airbus A380 have achieved even higher fuel efficiency, offering a 20% increase in per-passenger fuel efficiency. This improvement in fuel efficiency is a result of technological advancements, aerodynamic enhancements, and a focus on sustainable practices in the aviation industry.
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Frequently asked questions
The 747 burns approximately 1 gallon of fuel per second, or 3,600 gallons per hour.
On a 10-hour flight, a 747 might burn 36,000 gallons of fuel.
A typical brand-new car has a level of consumption of about 35 miles to the gallon. This means that to burn 23,000 gallons of fuel, a car would need to travel over three-quarters of a million miles.
