Lockheed C-5 Galaxy vs Boeing C-17 Globemaster III

The Lockheed C-5 Galaxy and the Boeing C-17 Globemaster III are impressive cargo aircraft. Militaries around the globe have used both for decades to transport cargo, personnel, and other items. But, C5 galaxy vs C17, what makes them different? Let’s take a closer look at these two behemoths of the sky to see their unique features and capabilities.

Aircraft:	Lockheed Martin C5 Galaxy	Boeing C-17 Globemaster III
Photo:
Country:	United States	United States
Manufactured:	from: 1970 to: Present	from: 1991 to: 2015
ICAO:	-	C17
Price:	$167.7 million	$218 million
Avionics:	Honeywell Defense Avionics Systems	BAE Systems Avionics , AlliedSignal AN/APS-133(V) weather and mapping radar
Engine:	4 × General Electric TF39	4x Pratt & Whitney F117-PW-100
Engine Type:	-	Turbofan
Power:	43,000 pound-force	40,440 pound-force
Max Cruise Speed:	503 knots 932 Km/h	450 knots 833 Km/h
Approach Speed (Vref):	-	115 knots
Travel Range:	2,400 Nautical Miles 4,445 Kilometers	2,420 Nautical Miles 4,482 Kilometers
Fuel Economy:	0.05 nautical mile / gallon 0.024 kilometres / litre	0.07 nautical mile / gallon 0.034 kilometres / litre
Service Ceiling:	34,000 feet	45,000 feet
Rate of Climb:	-	1500 feet / minute 7.62metre / second
Take Off Distance:	2560 metre 8,398.85 feet	2316 metre 7,598.33 feet
Landing Distance:	1097 metre 3,599.04 feet	914 metre 2,998.65 feet
Max Take Off Weight:	1,851,852 Kg 4,082,593 lbs	265,352 Kg 584,995 lbs
Max Landing Weight:	-	202,721 Kg 446,919 lbs
Max Payload:	122,472 Kg 270,002 lbs	77,520 Kg 170,901 lbs
Fuel Tank Capacity:	51,150 gallon 193,623 litre	35,546 gallon 134,556 litre
Baggage Volume:	-	591.8 m3 20,899 ft3
Seats - Economy:	8 seats	102 seats
Seats - Business Class:	-	-
Seats - First Class:	-	-
Cabin Height:	-	4.5 metre 14.76 feet
Cabin Width:	6 metre 19.68 feet	5.49 metre 18.01 feet
Cabin Length:	37 metre 121.39 feet	26.82 metre 87.99 feet
Exterior Length:	75.3 metre 247.04 feet	53 metre 173.88 feet
Tail Height:	-	16.79 metre - 55.08 feet
Fuselage Diameter:	-	6.86 metre 22.51 feet
Wing Span / Rotor Diameter:	67.89 metre 222.73 feet	51.75 metre 169.78 feet
Wing Tips:	No Winglets	Canted Winglets
More Info:	Lockheed Martin C5 Galaxy	Boeing C-17 Globemaster III
	Data presented is for entertainment purposes and should not be used operationally.

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About the Lockheed C-5 Galaxy

It was first introduced in 1968 and is the largest military airlift in the United States Air Force (USAF). And it is powered by four engines and has a range of over 4,800 miles. With a wingspan of 222 feet, it can carry up to 840,000 lbs of cargo.

Why was it developed and built?

The Lockheed C-5 Galaxy was developed to meet an urgent need for the USAF during the Vietnam War. It replaced two aircraft in service, the C-141 Starlifter, and the C-133 Cargomaster. The main purpose of the C-5 was to transport heavy and bulky cargo, such as tanks and helicopters, across long distances.

What purpose does it serve?

The Lockheed C-5 Galaxy is capable of transporting cargo and personnel, as well as providing medical evacuation and air refueling services. It has also been used in relief operations after the 9/11 attacks and during natural disasters.

About the Boeing C-17 Globemaster III

Next on the line is the Boeing C-17 Globemaster III. It was first introduced in 1991 and is the latest addition to the USAF’s airlift fleet. Powered by four turbofan engines, it has a range of over 2,420 miles and can carry up to 585,000 lbs of cargo. It has a wingspan of 169 feet and can reach speeds of up to 520 mph.

Why was it developed and built?

The Boeing C-17 Globemaster III was developed to replace the C-141 Starlifter and the C-130 Hercules. Its primary purpose is to provide tactical airlifts for troops and cargo and air refueling operations.

What purpose does it serve?

The USAF mainly uses the Boeing C-17 Globemaster III for airlift missions. It is capable of transporting cargo and personnel, as well as providing medical evacuation and air refueling services. Also, it is used for humanitarian missions, such as disaster relief operations.

How are the Lockheed C-5 Galaxy and Boeing C-17 Globemaster III different?

Time to compare the Lockheed C-5 Galaxy and Boeing C-17 Globemaster III.

Size Matters

The first thing that stands out about these two aircraft is their size. The Lockheed C-5 Galaxy is by far the larger of the two planes, with a wingspan of 222 feet, length of 247 feet, and height of 65 feet.

The Boeing C-17 Globemaster III has a wingspan of 169 ft and a height of 55 feet. While they may not seem like huge differences on paper, they significantly affect how much cargo each can carry.

Cargo Capacity

It should be no surprise that the Lockheed C-5 Galaxy can carry more cargo than its smaller cousin due to its larger size. It can hold up to 281,000 lb compared to just 170,900 lb carried by the Boeing C-17 Globemaster III.

On top of its large cargo capacity, it also has an advanced fuel system that allows it to fly greater distances without needing to refuel midflight. This makes it ideal for long-distance flights across continents or even oceans!

Performance

The Lockheed C-5 Galaxy is also far superior when it comes to performance. It has a maximum speed of 532 mph (856 km/h), while the Boeing C-17 Globemaster III has a maximum speed of just 520 mph (830 km/h).

Range

Finally comes range – another area where there is a notable difference between these two military means of transport. The Lockheed C-5 Galaxy has an impressive range of 4,800 nautical miles, while the Boeing C-17 Globemaster III range is limited to only 2,420 nautical miles.

This makes sense given its smaller size – if you’re flying something heavy over long distances, you’ll need more fuel! With this in mind, it’s easy to see why militaries around the globe rely on both these planes for their long-distance transport needs!

How are the Lockheed C-5 Galaxy and Boeing C-17 Globemaster III similar?

For all their differences, the Lockheed C-5 Galaxy and Boeing C-17 Globemaster III share some performance similarities.

• Both have similar engines, for example, and their engines can propel them to the speeds mentioned above.
• They are also similar in their ability to take off and land on short runways, making them ideal for airports with limited space.
• They both offer increased safety and reliability compared to older cargo aircraft.

Finally, both planes have been in service for decades and have proven their reliability, making them an excellent choice for any military transport mission.

What’s better about the Lockheed C-5 Galaxy?

The Lockheed C-5 Galaxy is a large, four-engine military transport aircraft developed by Lockheed Aircraft Company in the 1960s.

• It has a maximum takeoff weight of over 270 tons and can hold up to 218.4 tons of cargo — it’s one of the largest planes ever flown!
• It boasts impressive fuel efficiency compared to other similarly-sized aircraft, which lets you go farther on less fuel.
• It is equipped with an advanced avionics system that gives flight crews unprecedented control and maneuverability in any environment.

All in all, it’s easy to see why so many militaries worldwide trust and depend on the reliable power and capability of the Lockheed C-5 Galaxy for their missions.

What’s better about the Boeing C-17 Globemaster III?

The Boeing C-17 Globemaster III is a modern marvel of aviation, designed with passengers and cargo in mind.

• Its ability to take off and land on short runways and its spacious interior makes it the perfect aircraft for longer missions requiring quick turnaround times.
• It can quickly disembark troops, move cargo between regions, and perform humanitarian aid operations without needing to reposition large amounts of people or equipment.
• Its superior handling capabilities allow pilots to fly in demanding conditions without sacrificing safety.

All of this combined makes the Boeing C-17 Globemaster III one of the world’s most versatile aircraft.

Conclusion

In conclusion, both planes have their distinct advantages and disadvantages when compared side by side. The Lockheed C-5 Galaxy is bigger and carries more cargo but has a shorter range than Boeing’s C-17 Globemaster III, which offers greater range but less capacity.