Mercedes Mullins
The C-130 Hercules is a military aircraft primarily used for tactical airlift missions, including the airdropping of troops and equipment into hostile territories. The C-130's fuel capacity has been a key consideration in its development, with various models featuring different fuel tank configurations and engine types, impacting their range and performance. The topic of fuel capacity is particularly important given the aircraft's record for the longest sustained flight by a C-130, during which it was refuelled seven times and took on 410,000 lb (190,000 kg) of fuel.
| Characteristics | Values |
|---|---|
| Initial model | C-130A |
| Engine | Allison T56-A-9 turboprops |
| Additional fuel capacity | 6,000 pounds (2,700 kg) |
| Total fuel capacity | 40,000 pounds (18,000 kg) |
| New model | C-130B |
| Engine | Allison T56-A-7 turboprops |
| Fuel capacity | Additional fuel in wings |
| C-130E fuel capacity | 6,700 gallons in six integral wing tanks |
| External pylon fuel tank capacity | 1,300 gallons |
| C-130J fuel offload | 45,000 lbs at 1,000 nautical miles |
| Ground refueling capacity | 600 gallons / 4,080 lbs (2,270 liters / 1,850 kg) per minute |
| Refueling speed envelope | 100 to 270 knots indicated airspeed |
| C-130F fuel tank capacity | 3,600 US gallons (14,000 L) |
| C-130B-II fuel tank capacity | 1,360 US gallons (5,100 litres) |
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What You'll Learn
The C-130B model has greater fuel capacity
The C-130 Hercules is an American four-engine turboprop military transport aircraft designed and built by Lockheed (now Lockheed Martin). The C-130 primarily performs the tactical portion of the airlift mission and is the prime transport for airdropping troops and equipment into hostile areas. The C-130A, the initial production model, was powered by Allison T56-A-9 turboprops with three-blade propellers. However, as the C-130A became operational, its lack of range became apparent, and the need for additional fuel capacity was identified.
This led to the development of the C-130B model, which was introduced in 1959 to address the range limitations of the earlier A-models. The C-130B incorporated several new features, most notably increased fuel capacity. This was achieved through the addition of auxiliary fuel tanks built into the centre wing section, providing a significant boost to the aircraft's overall fuel capacity.
The C-130B model's increased fuel capacity offered several advantages and addressed the range limitations experienced by the earlier C-130A model. With more fuel available, the C-130B could fly longer distances without refuelling, extending its operational range and enhancing its capabilities as a transport and cargo aircraft. This increased range provided greater flexibility in mission planning and allowed for more efficient and effective deployment of troops and equipment to remote and hostile areas.
Additionally, the C-130B's improved fuel capacity contributed to the aircraft's overall versatility. The C-130 Hercules is known for its adaptability, with variants being used for various purposes, including as a gunship, for airborne assault, search and rescue, scientific research support, weather reconnaissance, aerial refuelling, maritime patrol, and aerial firefighting. The extended range provided by the C-130B's fuel capacity likely contributed to its versatility, enabling it to undertake a broader range of missions and support various military and civilian operations worldwide.
In summary, the C-130B model's greater fuel capacity was a significant improvement over the earlier C-130A, enhancing its range, operational capabilities, and mission flexibility. This development underscores the continuous efforts to improve the performance and adaptability of the C-130 Hercules, ensuring its enduring role as a vital asset for military forces worldwide.
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The KC-130J tanker offers faster refuelling
The KC-130 is a multi-role, multi-mission tactical tanker/transport that provides the refueling support required by the USMC for its aircraft. The KC-130J is the latest variant operated by the United States Marine Corps (USMC). It replaced older KC-130F, KC-130R, and KC-130T variants for aerial refueling. The KC-130J offers increased utility and a much-needed improvement in mission performance.
The KC-130J is the global leader in aerial refueling for tactical and tiltrotor aircraft and helicopters. It is capable of refueling both fixed- and rotary-wing aircraft as well as conducting rapid ground refueling. The refueling speed envelope has been widened from 100 to 270 knots (500 km/h) indicated airspeed, offering more capability and flexibility. The KC-130's offload is significantly greater than previous Hercules tankers. For example, at 1,000 nautical miles (1,852 km), the fuel offload is well over 45,000 pounds (20,412 kg).
The KC-130J also provides for rapid ground refueling of helicopters, vehicles, and fuel caches. The two wing-mounted hose and drogue refueling pods can each transfer up to 300 gallons (1,136 L) per minute to two aircraft simultaneously, allowing for rapid cycle times of multiple-receiver aircraft formations. This enables a typical tanker formation of four aircraft in less than 30 minutes.
The KC-130J shares 55 percent of the same airframe as preceding models but is a greatly improved aircraft. Technological developments have led to the incorporation of interior/exterior night vision lighting, night vision goggle head-up displays, a global positioning system, and jam-resistant radios.
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The C-130E has a longer range
The C-130 Hercules is a powerful aircraft with a range of variants, each with different capabilities and modifications. The C-130E is an extended-range variant of the C-130B, featuring two underwing fuel tanks and enhanced endurance. This model entered service in 1962 as an interim long-range transport aircraft for the Military Air Transport Service.
The C-130E has a total fuel capacity of 6,700 gallons, distributed across six integral wing tanks. Additionally, each wing features an external pylon fuel tank with a capacity of 1,300 gallons, significantly contributing to the aircraft's overall fuel capacity.
The development of the C-130 series saw continuous improvements in fuel capacity and range. The initial C-130A model lacked sufficient range, prompting the addition of wing pylon-mounted tanks that increased fuel capacity by 6,000 pounds. The subsequent C-130B model further addressed this issue by incorporating auxiliary fuel tanks in the center wing section.
The C-130E's extended range capabilities are a result of its larger external fuel tanks, each with a capacity of 1,360 US gallons (5,100 litres). This increased fuel capacity translates to a longer range, allowing the aircraft to cover greater distances without refuelling.
The Allison T56 turboprop engine, introduced in the C-130A and retained in subsequent models, also contributes to the C-130E's range capabilities. This engine provides greater range than a turbojet engine due to its lower fuel consumption, and it produces more power for its weight compared to piston engines.
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The C-130H carries 6,700 gallons of fuel
The C-130 is a military aircraft that has been in use since the 1950s. Over the years, several variations of the C-130 have been introduced, including the C-130A, C-130B, C-130D, C-130E, and C-130H, each offering improvements and increased capabilities over its predecessor.
The C-130H, in particular, has a fuel capacity of 6,700 gallons, carried in six integral wing tanks. This is a significant improvement over earlier models, which had lower fuel capacity and, consequently, limited range. For example, the C-130B model, introduced in 1959, featured additional fuel capacity in the form of auxiliary tanks built into the center wing section to address the range limitations of the earlier C-130A model.
The C-130H's external pylon fuel tanks, located under each wing, further contribute to its extended range capabilities. Each of these external tanks can hold up to 1,300 gallons of fuel. This additional fuel capacity enhances the aircraft's operational endurance and flexibility, allowing it to undertake longer missions and support various military operations, such as troop and equipment transport, aerial firefighting, and reconnaissance.
The C-130H's increased fuel capacity and improved performance played a crucial role in its procurement and deployment. Following the tactical airlift fleet's role in Operation Just Cause and the Persian Gulf War, Congress approved the acquisition of the C-130H to replace the aging C-130E models. The enhanced fuel capacity and range of the C-130H provided the military with greater operational capabilities and strategic advantages in conducting their missions.
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The AC-130's longest sustained flight was 36 hours
The C-130 Hercules is a versatile aircraft with a range of variants, each with different fuel capacities. The KC-130 variant, for instance, features a removable 3,600 US gallon (14,000-liter) fuel tank, while the C-130B model has auxiliary tanks built into the center wing section. The C-130E model, designed as an extended-range option, boasts external fuel tanks capable of holding 1,360 US gallons (5,100 liters) each.
The AC-130, a heavily armed variant of the C-130 Hercules, holds the record for the longest sustained flight by any C-130. On October 22-23, 1997, two AC-130U gunships took off from Hurlburt Field, Florida, and flew nonstop for 36 hours to Taegu Air Base (Daegu International Airport) in South Korea. This remarkable feat was made possible by seven in-flight refuelings from KC-135 tankers, allowing the gunships to take on a total of 410,000 pounds (186,000-190,000 kg) of fuel.
This record-breaking flight surpassed the previous record for the longest C-130 flight by over 10 hours, showcasing the capabilities of the AC-130 platform and the importance of in-flight refueling capabilities. The AC-130's endurance and range have made it a valuable asset for the US military in various conflicts, including Afghanistan and Iraq.
The AC-130's ability to stay airborne for extended periods is a testament to its design and the advancements in refueling technology. This endurance enables the aircraft to undertake long-range missions and provide critical support to ground forces, as demonstrated by its extensive deployment in US military operations.
The AC-130's 36-hour nonstop flight highlights the aircraft's strategic value, particularly in situations where prolonged aerial presence is required. This record flight not only pushed the boundaries of the C-130's capabilities but also contributed to the development of procedures for long-range missions, such as the communications-out/lights-out refueling protocols refined during the Iran hostage crisis in 1979.
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Frequently asked questions
The fuel capacity of a C-130 depends on the model and variant. The C-130A has a capacity of 40,000 pounds (18,000 kg) of fuel, while the C-130B has additional fuel capacity in the form of auxiliary tanks built into the center wing section. The C-130E/H model can carry 6,700 gallons of fuel in six integral wing tanks and has an external pylon fuel tank with a capacity of 1,300 gallons under each wing.
The KC-130J offers an improvement in mission performance and can offload well over 45,000 lbs of fuel at 1,000 nautical miles.
The KC-130F tanker has a removable 3,600 US gallon (14,000 L) stainless steel fuel tank carried inside the cargo compartment.
The C-130B-II is an electronic reconnaissance variant of the C-130B with false external wing fuel tanks that are slightly larger than the standard wing tanks.
The C-130D model has increased fuel capacity but the exact amount is not mentioned in the sources provided.
