Comparing the C-17 and C-5- Unveiling the Key Differences in Military Transport Aircraft

Difference between C-17 and C-5

The C-17 Globemaster III and the C-5 Galaxy are two of the most versatile and powerful military transport aircraft in the United States Air Force. Both are designed to transport troops, equipment, and cargo over long distances, but there are several key differences between them that set them apart.

Firstly, the C-17 is significantly smaller than the C-5. The C-17 has a wingspan of 169 feet and a length of 173 feet, while the C-5 has a wingspan of 222 feet and a length of 247 feet. This means that the C-17 can operate from shorter runways and can be deployed in a wider range of environments. The C-5, on the other hand, requires longer runways and is more limited in its deployment options.

Another major difference between the two aircraft is their payload capacity. The C-17 can carry up to 102,000 pounds of cargo or 102 troops, depending on the configuration. The C-5, however, can carry up to 363,000 pounds of cargo or 73 troops. This means that the C-5 is capable of transporting larger and heavier loads, such as tanks and other heavy equipment.

The engines also differ between the two aircraft. The C-17 is powered by four Pratt & Whitney PW2040 engines, which provide a combined thrust of 51,000 pounds. The C-5, on the other hand, is powered by four General Electric F101-GE-102 engines, which provide a combined thrust of 81,000 pounds. This gives the C-5 greater takeoff power and the ability to handle more demanding flight conditions.

In terms of speed, the C-17 can reach a maximum speed of 540 knots, while the C-5 can reach a maximum speed of 531 knots. Although the C-17 is slightly faster, the C-5’s greater payload capacity makes it more suitable for transporting heavy equipment and personnel over long distances.

The C-17 and C-5 also differ in terms of their operational history. The C-17 entered service in 1993 and has been used extensively in operations such as Operation Iraqi Freedom and Operation Enduring Freedom. The C-5, on the other hand, entered service in 1970 and has been used in various military campaigns, including the Vietnam War and the Gulf War.

In conclusion, while both the C-17 and C-5 are powerful military transport aircraft, they have distinct differences that make them suitable for different missions. The C-17 is smaller, faster, and more agile, while the C-5 is larger, heavier, and capable of transporting heavier loads. Both aircraft play a crucial role in the United States Air Force’s ability to project power around the world.