# How is aircraft fuel efficiency measured?

## How is aircraft fuel efficiency measured?

As mentioned above, fuel efficiency can be measured by comparing the production of an airline to the quantity of fuel burnt. From this figure, we can see for long haul an average of 31-32 passengers per km per litres of fuel burnt (US uses instead Pax Miles per Gallon).

What is the most fuel-efficient airplane?

The most fuel-efficient airline was Norwegian Air Shuttle with 44 pax-km/L (2.27 L/100 km [104 mpg‑US] per passenger), thanks to its fuel-efficient Boeing 787-8, a high 85% passenger load factor and a high density of 1.36 seat/m2 due to a low 9% premium seating.

### How much fuel does an aircraft burn per hour?

The plane will consume 2,508 litres of fuel per hour. An Airbus A321neo fuel capacity of 32,940 litre. If an Airbus A321neo burns 0.683 litre per second, Boeing 747 uses approximately 4 litres every second, which translates to 240 litres per minute and 14,400 litre per hour.

How can aircraft reduce fuel consumption?

Here are four ways changes in aircraft design are helping reduce fuel consumption:

1. Drag Reduction. Reducing the lift-to-drag ratio of an aircraft can make it more aerodynamically efficient and help reduce the aircraft’s weight and fuel use.
2. Wiring.
3. New Components, Equipment Designs and Materials.
4. Efficient Engines.

## How do you calculate fuel efficiency?

The calculation is simple. Divide the number of kilometers by the number of litres consumed. If you have covered 100km on the run and at refill, the vehicle has taken in five litres of fuel, your efficiency is 20kmpl.

How much fuel does a 747 burn per hour?

approximately 10 to 11 tonnes
The four engines of the Boeing 747 Jumbo Jet burn approximately 10 to 11 tonnes of fuel an hour when in the cruise. This equates to roughly 1 gallon (approximately 4 litres) of fuel every second. It can carry a maximum of 238,604 liters of fuel and it has a range of about 7,790 nautical miles.

### Which jet aircraft is the most fuel efficient?

6 to 12% from airframe retrofits (winglets,riblets,lightweight cabin furnishing) currently available

• 4 to 10% from materials and Structure (composite structure,adjustable landing gear,fly-by-wire) also currently available
• 1 to 4% from electric taxiing from 2020+
• How can aircraft fuel be made more efficient?

– 27% less fuel – 15% weight reduction – 20% higher lift to drag ratio – 27% less thrust required

## How much fuel does it take to fuel the aircraft?

In fact, a jet aircraft uses a phenomenal, almost incomprehensible, amount of fuel. For example, a Boeing 747 burns up to one gallon of fuel every second. Yes, every second! That means that during a five-hour flight, a Boeing 747 will burn 18,000 gallons of fuel. Compare that to the average motor vehicle.

Which aircraft has the largest fuel capacity?

Crew: minimum 6 persons

• Length: 84 m (275 ft 7 in)
• Wingspan: 88.4 m (290 ft 0 in)
• Height: 18.1 m (59 ft 5 in)
• Wing area: 905 m2 (9,740 sq ft)
• Aspect ratio: 8.6
• Empty weight: 285,000 kg (628,317 lb)
• Max takeoff weight: 640,000 kg (1,410,958 lb)
• Fuel capacity: 300,000 kg
• Cargo hold – volume 1,300 m3 (46,000 cu ft),length 43.35m,width 6.4m,height 4.4m