Lockheed C-5 Galaxy

Lockheed C-5 Galaxy
Name	C-5 Galaxy
Type	Strategic airlifter
Manufacturer	Lockheed Corporation
First flight	30 June 1968
Introduced	June 1970
Status	In service
Primary user	United States Air Force
Number built	131

Lockheed C-5 Galaxy. The Lockheed C-5 Galaxy is a large military transport aircraft originally designed and built by Lockheed, and now maintained and upgraded by its successor, Lockheed Martin. Serving as the United States Air Force's premier strategic airlifter since 1970, it provides the global reach necessary for massive outsize and oversize cargo transport. The aircraft's distinctive features include a high-wing design, T-tail, and a nose cargo door that opens upward for straight-in loading.

Development and design

The C-5's development was initiated in the early 1960s to meet a United States Department of Defense requirement for a heavy logistics aircraft, a need identified during the Berlin Blockade and the Cuban Missile Crisis. The Heavy Logistics System competition was won by Lockheed over proposals from Boeing and Douglas Aircraft Company. Key design goals focused on intercontinental range with a 265,000-pound payload, incorporating features like a kneeling landing gear to lower the cargo floor and a system allowing simultaneous loading from both the front and rear. The aircraft was powered by four General Electric TF39 turbofan engines, which were pioneering high-bypass designs that significantly improved fuel efficiency. Major structural components were produced across the United States, with final assembly taking place at the Lockheed plant in Marietta, Georgia.

Operational history

Entering service with the Military Airlift Command in 1970, the C-5 quickly proved its worth in global operations. It played a critical role in supporting Israel during the Yom Kippur War in the 1973 Operation Nickel Grass. The aircraft was instrumental in numerous humanitarian missions, including delivering relief supplies after the Mount Pinatubo eruption and during Operation Provide Promise in the former Yugoslavia. During the Gulf War and subsequent conflicts in Iraq and Afghanistan, the C-5 formed the backbone of strategic airlift, moving M1 Abrams tanks and other heavy equipment. The fleet has been periodically upgraded, with the modernized C-5M Super Galaxy achieving full operational capability in 2018, extending its service life for decades.

Variants

The initial production model was the C-5A, though early aircraft suffered from wing fatigue issues, leading to a major wing replacement program. The improved C-5B, produced in the 1980s, incorporated strengthened wings and updated avionics. A small number of aircraft were converted to the C-5C configuration, with an enlarged cargo compartment to transport outsized spacecraft components for NASA. The comprehensive Reliability Enhancement and Re-engining Program (RERP) transformed existing airframes into the C-5M Super Galaxy, featuring new General Electric CF6 engines, modernized glass cockpits, and upgraded systems. Specialized variants include the C-5 AMP (Avionics Modernization Program) aircraft, which were interim upgrades before receiving new engines.

Operators

The sole operator of the C-5 Galaxy is the United States Air Force. All aircraft are assigned to Air Mobility Command, with active-duty squadrons based at Travis Air Force Base in California and Dover Air Force Base in Delaware. The Air Force Reserve Command and the Air National Guard also operate the type from bases including Westover Air Reserve Base in Massachusetts and Memphis Air National Guard Base in Tennessee. The 436th Airlift Wing at Dover Air Force Base and the 60th Air Mobility Wing at Travis Air Force Base are the primary active-duty units.

Specifications (C-5M Super Galaxy)

* **Crew:** 7 (Aircraft commander, pilot, two flight engineers, and three loadmasters) * **Length:** 247 ft 1 in (75.3 m) * **Wingspan:** 222 ft 9 in (67.89 m) * **Height:** 65 ft 1 in (19.84 m) * **Empty weight:** 374,000 lb (169,643 kg) * **Max takeoff weight:** 840,000 lb (381,018 kg) * **Powerplant:** 4 × General Electric CF6-80C2 turbofan engines, 50,000 lbf (220 kN) thrust each * **Maximum speed:** 518 mph (834 km/h, Mach 0.79) * **Range:** 5,524 mi (8,889 km) with 265,000 lb (120,000 kg) payload * **Service ceiling:** 41,000 ft (12,500 m) * **Cargo hold:** 121 ft (36.91 m) long, 19 ft (5.79 m) wide, 13.5 ft (4.11 m) high

Notable appearances in media

The imposing size of the aircraft has made it a visually striking subject in film and television. It featured prominently in the 1990 action film *Die Hard 2*, where it was depicted on a runway at Washington Dulles International Airport. The C-5 has appeared in documentaries about the United States Air Force and historical events like the Vietnam War. It is also a popular subject in aviation photography and modeling, and has been featured in episodes of the Discovery Channel series *Mighty Planes*.

Category:Military transport aircraft of the United States Category:Four-engined jet aircraft Category:Lockheed aircraft Category:1960s United States military aircraft