
The Airbus A320 is a popular aircraft with a fuel-efficient design. The A320neo, for instance, offers up to 15% better fuel economy than its predecessor, the A320ceo, and can fly up to 3,400 nautical miles. The A320 has a few fuel tank options, including wing fuel tanks and a centre tank. The number of fuel tanks in an A320 depends on the variant, with some having only wing tanks and others having both wing and centre tanks. The A320's range can be further extended with the use of auxiliary fuel tanks (ACTs).
| Characteristics | Values |
|---|---|
| Number of fuel tanks | 2 in each wing (inner and outer tank) |
| Fuel capacity | 15,590 to 23,430 L (3,429 to 5,154 imp gal) |
| Range | 2,850 or 1,860 nmi (5,280 or 3,440 km; 3,280 or 2,140 mi) |
| Maximum number of passengers | 150 |
| Maximum capacity with A320neo | 194 passengers |
| Fuel economy with A320neo | 15% better |
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What You'll Learn

The A320 has 2 fuel tanks in each wing
The Airbus A320 has 2 fuel tanks in each wing, an inner and an outer tank. The outer tank, located at the wing tip, typically holds 1,400 to 1,500 lbs (635 to 680 kg) of fuel and is designed to remain full at all times to maintain structural integrity. The inner tank can hold up to 1,650 lbs (750 kg) of fuel.
The A320's wing fuel tank system is designed with both inner and outer tanks for structural integrity and to reduce wing tip flutter during high-speed flights. The outer tank plays a crucial role in achieving this stability by staying full, which helps to keep as much fuel outboard as possible. This design feature is not present on the A321, which only has a single tank in each wing.
The A320's fuel transfer system operates based on the fuel levels in the inner and outer tanks. When the inner tank reaches approximately 750 kg or 1,650 lbs, the transfer valves open, allowing the fuel from the outer tank to flow into the inner tank for use. This transfer typically occurs as the aircraft pitches down to start its descent, depending on the initial fuel load.
The A320's wing fuel tanks enable the aircraft to carry enough fuel to power its engines and achieve a range of up to 2,850 or 1,860 nautical miles (5,280 or 3,440 km) with 150 passengers on board. The wing fuel tank system, with its inner and outer tanks, contributes to the aircraft's overall performance and stability during flight.
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The outer wing tanks hold 690kg/1500lb
The Airbus A320 is a fuel-efficient aircraft with several features that contribute to its performance and capabilities. One notable aspect is its fuel tank configuration, which includes outer wing tanks that play a crucial role in the overall fuel system.
The outer wing tanks on the Airbus A320 hold 690 kg or 1,500 lb of fuel. This design serves a specific purpose: to reduce wing tip flutter during high-speed flights at various flight levels. By keeping the outer tanks full, the aircraft maintains its structural integrity and improves overall stability.
The outer wing tanks are an essential component of the A320's fuel system. Their primary function is to provide fuel to the inner tanks as needed. During cruise conditions, the outer wing tanks remain full until the inner tanks reach a certain capacity, typically around 750 kg or 1,650 lb. At this point, the transfer valves between the tanks open, allowing the fuel from the outer tanks to be utilised.
The transfer of fuel from the outer to the inner tanks usually occurs as the aircraft begins its descent, with the valves opening when the inner tanks reach a specific low-fuel level. This process ensures a smooth and controlled flow of fuel within the aircraft's fuel system.
The outer wing tanks' capacity of 690 kg or 1,500 lb is a significant contribution to the A320's overall fuel capacity. This fuel capacity enables the aircraft to cover long-range distances, such as up to 6,300 kilometres or 3,400 nautical miles for the A320neo variant. Efficient fuel utilisation allows the A320 family to offer exceptional performance while reducing fuel burn and carbon dioxide emissions per seat.
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The A320neo offers 20% better fuel efficiency
The Airbus A320 is a single-aisle aircraft with two fuel tanks in each wing, an inner and an outer tank. The outer tank, located at the wing tip, holds around 1400-1500 lbs of fuel and is kept full to maintain structural integrity. The inner tank can hold up to 750 kg of fuel.
The Airbus A320neo, an incremental development of the A320 family, offers up to 20% better fuel efficiency than its predecessor, the A320ceo. This improvement is achieved through advanced aerodynamics, such as sharklets and optimised wing designs, as well as enhanced engine options. The A320neo's fuel efficiency leads to significant cost savings and contributes to its position as a leader in aviation innovation.
The A320neo's enhanced fuel efficiency also results in reduced emissions, with lower CO2 and NOx output. This aligns with Airbus's commitment to decarbonisation and sustainability, as evidenced by their development of the Descent Profile Optimization (DPO) system upgrade, which further decreases fuel consumption and emissions.
The increased fuel efficiency of the A320neo has a direct impact on operational costs, resulting in significant fuel savings for operators. Additionally, the advanced materials and design of the A320neo contribute to lower maintenance costs, making it a cost-effective choice for commercial aviation.
The A320neo's improved fuel efficiency also enhances its range, extending it by 500 nautical miles. This extended range provides more efficient route planning options for operators, allowing for greater flexibility in flight paths and destination reach.
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The A320's range is 2,850 or 1,860 nautical miles
The Airbus A320 is a twin-engine, single-aisle aircraft that can accommodate 150 passengers in a standard two-class configuration. It has a range of 2,850 or 1,860 nautical miles, depending on whether it uses fuel from its wing fuel tanks only or includes the centre tank. The outer wing tanks on the A320 hold 690 kg (1,500 lb) of fuel, and the inner tanks can hold 750 kg (1,650 lb).
The A320's range can be extended through the use of additional fuel tanks. The A321-200, a variant of the A320, has an increased fuel capacity of up to 30,030 L (7,930 US gal) with the installation of one or two optional 2,990 L (790 US gal) tanks in the rear underfloor hold. This variant has a longer range than the A320.
The Airbus Corporate Jet (ACJ) or Airbus A319CJ is another variant that incorporates removable extra fuel tanks, with up to six additional centre tanks installed in the cargo compartment. With these extra tanks, the ACJ has a range of up to 11,000 kilometres or 6,900 miles (6,000 nmi).
The A320 has been in service since March 1988, and as of 2019, over 9,000 aircraft have been delivered to more than 330 operators. It is considered a short-to-medium-haul aircraft and has gained a reputation as one of the most comfortable and successful aircraft in its class.
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The A321 has a single tank in each wing
The Airbus A320 family includes the A320 and the A321. The A320 has two fuel tanks in each wing, an inner and an outer tank, with the outer tank holding 1,400 or 1,500 lbs of fuel. The A321, on the other hand, has a simpler design with a single tank in each wing. This difference in design is due to the A321's wing structure, which is pushed to its absolute limits. To compensate, Airbus extended the aft loading of the A321 wing by re-profiling and extending the aft supercritical cusp using new super-extended and profiled split Fowler flaps.
The A321 has a shorter range than the A320, and its fuel capacity can be increased by installing one or two optional 2,990-liter tanks in the rear underfloor hold, increasing its total fuel capacity to 30,030 liters. This increase in fuel capacity allows the A321 to compete with similar aircraft, such as the Boeing 737-900/900ER and the 757-200.
The A320neo, a newer version of the A320, offers improved fuel efficiency with a range of up to 3,400 nautical miles and a 20% reduction in fuel burn and CO2 emissions per seat compared to its predecessor. This improved fuel efficiency is achieved through various enhancements, including new engines, sharklets, and cabin enablers.
The A321's single tank in each wing is a unique design feature that sets it apart from the A320's dual-tank system. This design choice by Airbus is influenced by the structural limitations and requirements of the A321's wings, demonstrating the engineering complexities and innovations that go into aircraft fuel systems.
In summary, the A321's single tank in each wing is a result of Airbus' engineering decisions and considerations for the aircraft's overall design and performance. This design choice has implications for the A321's range and fuel capacity, which have been addressed through optional additional tanks, ensuring the A321's competitiveness in the market.
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Frequently asked questions
The Airbus A320 has 2 fuel tanks in each wing, an inner and an outer tank. The outer tank, at the wing tip, holds 1400 or 1500 lbs of fuel and is kept full at all times for structural integrity.
The range of the Airbus A320 is up to 3,400 nautical miles or 6,300 kilometres. With eight passengers and auxiliary fuel tanks, the range can be increased to 6,900 miles.
The A320neo model offers up to 15% better fuel economy than its predecessor. The A320neo brings at least 20% fuel savings per seat compared to the previous generation.











































