Sylvie Willis
The C-17 Globemaster III is a flexible cargo aircraft capable of rapid strategic delivery of troops and cargo to main operating bases or forward bases in the deployment area. The C-17 has a maximum payload of 170,900 pounds (77,500 kg) and a maximum takeoff weight of 585,000 pounds (265,000 kg). With a payload of 160,000 pounds (73,000 kg) and an initial cruise altitude of 28,000 ft (8,500 m), the aircraft has an unrefueled range of about 2,400 nautical miles (4,400 km) for the first 71 aircraft, and 2,800 nautical miles (5,200 km) for all subsequent extended-range models with additional fuel tanks. The C-17's cruise speed is about 450 knots (830 km/h), and it can operate from small, austere airfields with runways as short as 3,500 ft (1,067 m) and as narrow as 90 ft (27 m) wide.
| Characteristics | Values |
|---|---|
| Maximum payload | 170,900 pounds (77,500 kg; 85.5 short tons) |
| Maximum takeoff weight | 585,000 pounds (265,000 kg) |
| Unrefueled range with a payload of 160,000 pounds (73,000 kg) and an initial cruise altitude of 28,000 ft (8,500 m) | 2,400 nautical miles (4,400 kilometres) on the first 71 aircraft |
| Unrefueled range with a payload of 160,000 pounds (73,000 kg) and an initial cruise altitude of 28,000 ft (8,500 m) for extended-range models with a sealed center wing bay as a fuel tank | 2,800 nautical miles (5,200 kilometres) |
| Maximum unloaded range | 6,230 nautical miles (11,540 km) |
| Minimum runway length for operation | 3,500 ft (1,067 m) |
| Minimum runway width for operation | 90 ft (27 m) |
| Engine thrust | 40,400 lbf (180 kN) |
| Engine type | Pratt & Whitney F117-PW-100 turbofan |
| Number of engines | 4 |
| Cargo floor length | 88 feet (27 m) |
| Cargo floor width | 18 feet (5.5 m) |
| Cargo floor height | 12 feet 4 inches (3.76 m) |
| Wingspan | 3,800 sq ft |
| Aspect ratio | 7.165 |
| Sweep angle | 35 degrees |
| Wing flaps | fixed-vane, double-slotted, and simple-hinged |
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What You'll Learn
- The C-17's unrefuelled range is 2,400 nautical miles (4,400 km) on the first 71 aircraft
- Extended-range models can reach 2,800 nautical miles (5,200 km)
- The C-17's maximum unloaded range is 6,230 nautical miles (11,540 km)
- The C-17's supercritical wing design enhances range and fuel efficiency
- The C-17 can be refuelled in flight
The C-17's unrefuelled range is 2,400 nautical miles (4,400 km) on the first 71 aircraft
The Boeing C-17 Globemaster III is a powerful and flexible cargo aircraft. It is capable of rapidly delivering troops and cargo to main operating bases or forward bases in the deployment area. The C-17's unrefuelled range is 2,400 nautical miles (4,400 km) on the first 71 aircraft. This range is made possible by the aircraft's efficient design and powerful engines.
The C-17 is equipped with four Pratt & Whitney F117-PW-100 turbofan engines, each capable of producing 40,400 lbf (180 kN) of thrust. The aircraft's supercritical wing design and winglets help to reduce drag and improve fuel efficiency, further contributing to its impressive range.
The C-17 has a maximum payload capacity of 170,900 pounds (77,500 kg) and a maximum takeoff weight of 585,000 pounds (265,000 kg). With a payload of 160,000 pounds (73,000 kg) and an initial cruise altitude of 28,000 ft (8,500 m), it can achieve its maximum unrefuelled range of 2,400 nautical miles. This range is ideal for transporting cargo and troops over long distances without the need for refuelling.
The C-17's versatility extends beyond its range. It can operate from short and narrow runways as short as 3,500 ft (1,067 m) and as narrow as 90 ft (27 m). Additionally, it can operate from unpaved and unimproved runways, although with a higher risk of aircraft damage. The C-17's cargo compartment is spacious, measuring 88 feet (27 m) long, 18 feet (5.5 m) wide, and 12 feet 4 inches (3.76 m) high, allowing for the transport of various cargo types.
Overall, the C-17's unrefuelled range of 2,400 nautical miles on the first 71 aircraft showcases its capabilities as a long-distance transport and delivery aircraft, contributing to its reputation as a strong and flexible workhorse in the airlift force.
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Extended-range models can reach 2,800 nautical miles (5,200 km)
The C-17 Globemaster III is a powerful aircraft designed for tactical and strategic airlift missions, capable of transporting cargo and troops worldwide. Its versatility extends to medical evacuation and airdrop operations, making it an invaluable asset in both military and humanitarian contexts.
The C-17's performance is impressive, with a maximum payload capacity of 170,900 pounds (77,500 kg) and a maximum takeoff weight of 585,000 pounds (265,000 kg). With a substantial payload of 160,000 pounds (73,000 kg) and an initial cruise altitude of 28,000 feet (8,500 m), the aircraft showcases its endurance.
The extended-range models of the C-17, informally known as the C-17 ER by Boeing, offer an even more impressive performance. With a sealed center wing bay serving as an additional fuel tank, these models can achieve an unrefueled range of 2,800 nautical miles (5,200 km). This extended range enhances the aircraft's operational flexibility, enabling it to cover greater distances without refuelling.
The C-17's ability to operate from short and narrow runways, including unpaved ones, further showcases its adaptability. Its high-lift wings, slats, and externally blown flaps enable take-off and landing on runways as short as 2,300 to 3,500 feet (700 to 1,067 meters) in length and just 90 feet (27 meters) in width. This capability is particularly advantageous when accessing remote and unprepared airfields.
The C-17's versatility and performance have been proven in various real-world scenarios, including military operations in Afghanistan and Iraq. Additionally, the aircraft has played a crucial role in providing humanitarian aid following natural disasters, such as the 2010 Haiti earthquake and the 2011 Sindh floods.
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The C-17's maximum unloaded range is 6,230 nautical miles (11,540 km)
The C-17 Globemaster III is a powerful aircraft with an impressive range and cargo capacity. With no cargo, the C-17 has a maximum range of 6,230 nautical miles or 11,540 kilometres. This range is a testament to the aircraft's efficient design and powerful engines.
The C-17 is equipped with four Pratt & Whitney F117-PW-100 turbofan engines, each capable of producing 40,400 lbf (180 kN) of thrust. This gives the aircraft the power it needs to carry substantial payloads over long distances. In fact, the C-17 has a maximum payload capacity of 170,900 pounds (77,500 kg) and a maximum takeoff weight of 585,000 pounds (265,000 kg).
When loaded with 160,000 pounds (73,000 kg) of cargo and cruising at an altitude of 28,000 feet (8,500 metres), the C-17 can still achieve a range of 2,400 nautical miles (4,400 kilometres) on the first 71 aircraft. The extended-range models, which include a sealed centre wing bay as a fuel tank, can reach 2,800 nautical miles (5,200 kilometres).
The C-17's range and payload capabilities make it an extremely versatile aircraft. It can operate from short and narrow runways as short as 3,500 feet (1,067 metres) and as narrow as 90 feet (27 metres). This flexibility allows the C-17 to access a wide variety of airfields and deliver cargo or troops directly to forward bases in the deployment area.
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The C-17's supercritical wing design enhances range and fuel efficiency
The C-17 Globemaster III is a large military transport aircraft developed for the United States Air Force (USAF) by McDonnell Douglas/Boeing in the 1980s and early 1990s. It is a flexible cargo aircraft capable of rapid strategic delivery of troops and cargo to main operating bases or forward bases in the deployment area. The C-17 has a maximum payload of 170,900 pounds (77,500 kg) and a maximum takeoff weight of 585,000 pounds (265,000 kg). With a payload of 160,000 pounds (73,000 kg) and an initial cruise altitude of 28,000 ft (8,500 m), the aircraft has a range of about 2,400 nautical miles (4,400 km) on the first 71 aircraft.
The C-17's supercritical wing design is a key feature that enhances its range and fuel efficiency. The wings of the C-17 have a total surface area of 3,800 square feet, a 7.165 aspect ratio, a 35-degree sweep angle, and a supercritical airfoil. The supercritical wing design is an advanced airfoil design that improves the range, cruising speed, and fuel efficiency of jet aircraft. This is achieved by producing weaker shock waves, which, in turn, create less drag and allow for higher efficiency.
The C-17's powerful engines also contribute to its fuel efficiency. The aircraft is equipped with four Pratt & Whitney F117-PW-100 turbofan engines, each capable of producing 40,400 lbf (180 kN) of thrust. The engine's thrust reversers can direct engine exhaust air upwards and forward, reducing the chances of foreign object damage and providing reverse thrust during taxiing. Additionally, the thrust reversers can be utilized in flight at idle-reverse for added drag during maximum-rate descents, further optimizing fuel efficiency.
The combination of the C-17's supercritical wing design and powerful engines enables it to achieve an impressive range and fuel efficiency. The aircraft's unrefueled range varies depending on the model, with the initial 71 aircraft capable of flying approximately 2,400 nautical miles (4,400 km) without refueling. However, the subsequent extended-range models, informally known as the C-17 ER, boast a range of 2,800 nautical miles (5,200 km) thanks to the addition of a sealed center wing bay as a fuel tank.
In conclusion, the C-17's supercritical wing design is a significant factor in its enhanced range and fuel efficiency. The advanced wing design, coupled with efficient engines, enables the C-17 to excel in its role as a flexible and rapid strategic transport aircraft for the USAF and other air forces worldwide.
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The C-17 can be refuelled in flight
The C-17 Globemaster III is a flexible cargo aircraft capable of delivering troops and cargo to main operating bases and forward bases in the deployment area. It is powered by four Pratt & Whitney F117-PW-100 turbofan engines, each capable of producing 40,400 lbf (180 kN) of thrust. The C-17 has a maximum payload of 170,900 pounds (77,500 kg) and a maximum takeoff weight of 585,000 pounds (265,000 kg).
Aerial refuelling has been used to reduce fuel consumption on long-distance flights, with potential fuel savings of 35-40% for long-haul flights. It allows the receiver aircraft to carry a greater payload by reducing the amount of fuel needed for takeoff and topping up during flight. This increased payload could include weapons, cargo, or additional personnel.
The C-17 has been utilised by various air forces, including the Royal Australian Air Force, Royal Canadian Air Force, Indian Air Force, and the Heavy Airlift Wing, which includes aircraft from multiple nations. The aircraft has seen use in various military and humanitarian operations, including the French intervention in Mali, medical evacuations, and the transportation of armoured vehicles.
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