The Lockheed C-5 Galaxy is a large military transport aircraft originally designed and built by Lockheed,

Lockheed C-5M 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. It provides the United States Air Force (USAF) with a heavy intercontinental-range strategic airlift capability, one that can carry outsized and oversized loads, including all air-certifiable cargo. The Galaxy has many similarities to the smaller Lockheed C-141 Starlifter and the later Boeing C-17 Globemaster III. The C-5 is among the largest military aircraft in the world.

Variants

C-5 AMP and C-5M

New C-5 cockpit avionics, installed under the Avionics Modernization Program

Following a study showing that 80% of the C-5 airframe’s service life was remaining,^[99] Air Mobility Command (AMC) began an aggressive program to modernize all remaining C-5Bs and C-5Cs and many of the C-5As. The C-5 Avionics Modernization Program (AMP) began in 1998 and includes upgrading the avionics to comply with Global Air Traffic Management standards, improving communications, fitting new flat-panel displays, improving navigation and safety equipment, and installing a new autopilot system. The first flight of a C-5 with AMP (85-0004) occurred on 21 December 2002

Catagory Lockheed Transport

Lockheed

Role	Strategic airlifter
National origin	United States
Manufacturer	Lockheed Corporation Lockheed Martin
First flight	30 June 1968^[1]
Introduction	June 1970
Status	In service
Primary user	United States Air Force
Produced	C-5A: 1968–1973 C-5B: 1985–1989
Number built	131 (C-5A: 81, C-5B: 50)

Development

The project funded by Boeing to produce the Boeing Model 248 began in September 1931, with the US Army Air Corps supplying the engines and the instruments. The open cockpit, fixed landing gear, externally braced wing design was the last such design procured by the USAAC as a fighter. The Model 248 had a high landing speed, which caused a number of accidents. To remedy this, flaps were fitted to reduce the landing speed. The Army Air Corps ordered three prototypes, designated XP-936, which first flew on 20 March 1932.

Specifications (C-5M) Data from Data from Flight Global

General characteristics
- Crew: 7 typical (aircraft commander, pilot, 2 flight engineers, 3 loadmasters) ; 4 minimum (pilot, copilot, two flight engineers)^{[citation needed]}
- Capacity:
  - 36 master pallets 463L, 281,000 lb (127,459 kg)^[129]
- Length: 247 ft 1 in (75.31 m)
- Wingspan: 222 ft 9 in (67.89 m)
- Height: 65 ft 1 in (19.84 m)
- Wing area: 6,200 sq ft (580 m²)
- Airfoil: root: NACA 0012.41 mod; tip: NACA 0011 mod^[130]
- Empty weight: 380,000 lb (172,365 kg)
- Gross weight: 840,000 lb (381,018 kg)
- Max takeoff weight: 920,000 lb (417,305 kg) ^{[N 2]}
- Fuel capacity: 51,150 US gal (42,590 imp gal; 193,600 l)
- Powerplant: 4 × General Electric CF6-80C2 turbofan engines, 51,000 lbf (230 kN) thrust each

Specifications (C-5M)

Performance

Performance

Maximum speed: 462 kn (532 mph, 856 km/h)
Maximum speed: Mach 0.79
Cruise speed: 450 kn (520 mph, 830 km/h) / M0.77
Range: 4,800 nmi (5,500 mi, 8,900 km) with a 120,000 lb (54,431 kg) payload. 2,300 nmi (4,260 km; 2,647 mi) with maximum cargo capacity.^[129]
Ferry range: 7,000 nmi (8,100 mi, 13,000 km) with no cargo on board.
Service ceiling: 41,000 ft (12,000 m) at 750,000 lb (340,194 kg)
Rate of climb: 2,100 ft/min (11 m/s)
Thrust/weight: 0.26
Take-off run: 5,400 ft (1,646 m)
Landing run: 3,600 ft (1,097 m)

Weapons

Aircraft of comparable role, configuration, and era

Antonov An-124 Ruslan – Soviet/Ukraine four–engine large military transport aircraft
Antonov An-225 Mriya – Soviet/Ukrainian six-engine heavy strategic cargo aircraft
Boeing C-17 Globemaster III – Four engine military transport aircraft
Boeing 747 – American wide-body long–range commercial jet aircraft; design derived from Boeing’s failed bid for the CX-X/HLS contract

All C-5M Galaxt C-5M Galaxy