Mercedes Mullins
The F/A-18 Hornet is a supersonic, twin-engine fighter aircraft designed for the United States Navy and Marine Corps. The Hornet's fuel consumption is a topic of interest for aviation enthusiasts and military personnel alike. The aircraft's fuel efficiency depends on various factors, including altitude, speed, and configuration. At low altitudes, the Hornet guzzles fuel, while flying at higher altitudes can increase its range. The aircraft's speed also impacts fuel consumption, with supersonic speeds requiring significantly more fuel than subsonic flight. Additionally, the weight of the aircraft, including any external fuel tanks and weapons, influences its fuel efficiency.
| Characteristics | Values |
|---|---|
| Fuel capacity | 4,460 pounds (2,020 kg) |
| Range | 500 miles at sea level, 990 miles at 36,000 feet |
| Maximum gross weight | 37,000 lb (16,800 kg) |
| Additional fuel capacity | Five external fuel tanks |
| Configuration | Airborne tanker with an external air-to-air refuelling system |
| Fuel consumption | Depends on cruise altitude, weight, and configuration |
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What You'll Learn
- The F/A-18 Hornet's fuel capacity was increased by 4,460 pounds to meet Navy range requirements
- The Hornet's range is impacted by its configuration, including the weight of any weapons
- The Hornet's FPAS page shows the best altitude and speed for range or endurance
- The Hornet can carry additional fuel in up to five external fuel tanks
- The Hornet's fuel consumption is higher at low altitudes
The F/A-18 Hornet's fuel capacity was increased by 4,460 pounds to meet Navy range requirements
The F/A-18 Hornet is a fighter aircraft initially known as the McDonnell Douglas Model 267. It was modified from the YF-17 to meet the US Navy's requirements for a multi-role fighter aircraft. The Hornet was effective but had a limited combat radius. To meet the Navy's range and reserve requirements, McDonnell increased the Hornet's fuel capacity by 4,460 pounds (2,020 kg). This was achieved by enlarging the dorsal spine and adding a 96-gallon fuel tank to each wing. These changes also increased the aircraft's gross weight by 10,000 pounds (4,540 kg).
The F/A-18 Hornet has stations plumbed for fuel tanks on stations 3, 5, and 7, and it can carry up to three external fuel tanks. The Hornet can also be configured as an airborne tanker by adding an external air-to-air refuelling system. The aircraft's range can be further increased by adjusting its altitude and speed. Flying at higher altitudes and slower speeds can increase the Hornet's range, but its actual fuel consumption in pounds per mile can vary depending on its configuration and payload.
The F/A-18 Hornet has also been referred to as the “Super Hornet”, and it is a larger and more advanced version of the F/A-18C and D Hornet. The Super Hornet first flew in 1995 and entered operational service with the US Navy. It is a supersonic, twin-engine, carrier-capable aircraft with internal fuel capacity of 14,400 pounds. The Super Hornet can carry additional fuel in up to five external fuel tanks.
In 2008, Boeing discussed developing a Super Hornet Block III with enhanced engines and conformal fuel tanks to further extend the aircraft's range. The company offered prospective customers the "International Roadmap", which included additional features such as an enclosed weapons pod, a next-generation cockpit, and an infrared search and tracking system. These enhancements aimed to improve the Super Hornet's capabilities and performance, including its range and fuel efficiency.
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The Hornet's range is impacted by its configuration, including the weight of any weapons
The Hornet's range is influenced by its fuel efficiency and the weight of its configuration, including any weapons it carries. The Hornet's range can be extended by utilizing external fuel tanks, but this also adds weight and drag, impacting its overall performance. The Hornet's range is further impacted by its flight altitude, with higher altitudes resulting in increased efficiency and reduced fuel consumption.
The Hornet's successor, the F/A-18E/F Super Hornet, offers notable improvements in terms of range and payload capacity. The Super Hornet is about 20% larger than the original Hornet, allowing for more internal fuel and contributing to a range increase of approximately 35-40%. The Super Hornet's payload capacity is significantly higher at 17,750 pounds, enabling it to carry a broader and more diverse set of weapons.
The Super Hornet's enhanced GE F414 engines, based on the Hornet's F404 engines, also contribute to its increased range. These engines provide around 35% more thrust, resulting in improved power and efficiency. Additionally, the Super Hornet's larger size provides extra room for upgraded avionics, weapons bays, and cooling systems, further enhancing its capabilities.
In summary, the Hornet's range is influenced by its configuration, including the weight of its weapons loadout. The Super Hornet's increased size, more efficient engines, and greater fuel capacity result in extended range and improved payload capabilities, allowing it to take on roles that the original Hornet was not designed for.
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The Hornet's FPAS page shows the best altitude and speed for range or endurance
The Hornets FPAS page is an invaluable tool for pilots, providing crucial insights into optimising the aircraft's range and endurance. FPAS stands for Flight Performance Advisory System, a system that computes and advises on the theoretical maximum range and endurance of the Hornet aircraft. It takes into account factors such as altitude, speed, and fuel consumption, helping pilots make informed decisions.
At higher altitudes, aircraft typically require less thrust to overcome drag forces. However, they also face challenges in getting enough air to produce thrust. The Hornet's designers considered these factors and included a real-time calculator in the FPAS to assist pilots. The system calculates and displays the aircraft's estimated range and endurance, along with the estimated fuel level upon arrival at a selected waypoint.
The FPAS page provides specific recommendations for altitude and speed to maximise range or endurance. For example, at cruise altitudes of approximately 29,000 feet, maintaining a speed of around Mach 0.8 offers the best range. However, it's important to note that fuel consumption and performance are greatly influenced by the aircraft's configuration, including the weight and type of payload.
Additionally, the FPAS page helps pilots understand the trade-off between range and endurance. When travelling, pilots should refer to the range parameters, while endurance parameters are more relevant when loitering or remaining in a specific area. Pilots can also use the FPAS page to determine the optimum cruise speed and altitude for their current configuration, helping to minimise drag and improve fuel efficiency.
The Hornet's FPAS page is a powerful tool that guides pilots in making informed decisions about altitude, speed, and fuel management. By utilising the information provided, pilots can extend the aircraft's range, improve endurance, and ensure they have sufficient fuel reserves for their missions.
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The Hornet can carry additional fuel in up to five external fuel tanks
The F/A-18 Hornet is a supersonic, twin-engine fighter aircraft capable of air-to-air and air-to-ground missions. It was initially designed by McDonnell Douglas as the YF-17 but was later redesignated the F/A-18 Hornet at the Navy's request. The Hornet can carry 14,400 lbs of fuel internally. However, its fuel capacity can be increased by adding up to five external fuel tanks.
The Hornet's external fuel tanks are crucial for extending its range and endurance. During flight, the centre tank can be drained first and jettisoned, followed by the wing tanks. This flexibility in fuel management allows pilots to optimise their aircraft's performance and range. Additionally, the Hornet's external fuel tanks can be equipped with an Infrared Search and Track (IRST) sensor, enhancing its ability to detect and track targets by sensing long-wave IR emissions.
The Hornet's ability to carry additional fuel in external tanks is a significant advantage, especially when considering its fuel consumption characteristics. The Hornet's fuel consumption rate varies depending on its altitude and speed. Flying at low altitudes and utilising the afterburner can result in higher fuel consumption, while climbing to higher altitudes can increase range. At cruise altitudes of around 29,000 to 32,000 feet, the Hornet can achieve better range performance, with some users reporting a range of 990 miles at 36,000 feet before reaching the fuel limit of 2,000 lbs.
The Hornet's external fuel tanks not only increase its range but also contribute to its versatility and adaptability. The ability to carry additional fuel allows the Hornet to undertake longer missions, patrol distant areas, and provide support over extended periods. This flexibility is crucial for various operations, including surveillance, reconnaissance, and long-range strike missions.
In conclusion, the F/A-18 Hornet's capacity to carry additional fuel in up to five external tanks significantly enhances its capabilities. The external fuel tanks increase the Hornet's range, endurance, and versatility, making it a highly adaptable aircraft capable of meeting the demands of diverse mission profiles.
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The Hornet's fuel consumption is higher at low altitudes
The F/A-18 Hornet is a multirole fighter aircraft capable of air-to-air and air-to-ground/surface missions. The Hornet's fuel consumption is higher at low altitudes, and its combat radius is limited. This is due to the fact that going supersonic has high fuel costs when at ground level, and there is little tactical advantage. The Hornet's fuel capacity was increased by 4,460 pounds (2,020 kg) by McDonnell Douglas to meet Navy range and reserve requirements. This was achieved by enlarging the dorsal spine and adding a 96-gallon fuel tank to each wing.
The Hornet can also carry additional fuel in up to five external fuel tanks and can be configured as an airborne tanker by adding an external air-to-air refuelling system. The aircraft's fuel consumption can be monitored using the FPAS page, which provides information on the best altitude and speed for range or endurance. For example, the Hornet can go 500 miles at sea level and 990 miles at 36,000 feet before hitting 2000 lbs of fuel.
The Hornet's fuel consumption is also affected by various factors such as the weight of the aircraft, including any additional weapons or equipment being carried, and the aircraft's speed and altitude. At cruise altitudes of around 29,000 feet, the Hornet can achieve a speed of M0.8 for the best range.
The Hornet's successor, the F/A-18E/F Super Hornet, has an even greater fuel capacity and can hold 14,400 lbs of fuel internally. The Super Hornet also has conformal fuel tanks available as part of the "International Roadmap" offered by Boeing to prospective customers. This package also includes enhanced engines, an enclosed weapons pod, a next-generation cockpit, and a new missile warning system.
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Frequently asked questions
The amount of fuel burned by an F18 depends on various factors, such as altitude, speed, and the weight of the aircraft. For example, an F18 can go 500 miles at sea level and 990 miles at 36,000 feet before it hits 2000 lbs.
To reduce fuel consumption, ensure your throttle is properly calibrated and avoid using the afterburner. Flying at higher altitudes can also increase fuel efficiency.
The range of an F18 is influenced by the weight of the aircraft, including the weight of any external fuel tanks and weapons being carried. The aircraft's configuration and speed also play a role in determining its range.
