Boeing Aircraft

Boeing C-17A Globemaster III

Boeing C-17 Globemaster III

Transport Aircraft

Boeing Aircraft

Boeing Aircraft

Boeing Aircraft

The McDonnell Douglas/Boeing C-17 Globemaster III is a large military transport aircraft that was developed for the United States Air Force (USAF)

Boeing C-17A Globemaster III

The McDonnell Douglas/Boeing C-17 Globemaster III is a large military transport aircraft that was developed for the United States Air Force (USAF) from the 1980s to the early 1990s by McDonnell Douglas. The C-17 carries forward the name of two previous piston-engined military cargo aircraft, the Douglas C-74 Globemaster and the Douglas C-124 Globemaster II. The C-17 commonly performs tactical and strategic airlift missions, transporting troops and cargo throughout the world; additional roles include medical evacuation and airdrop duties. It was designed to replace the Lockheed C-141 Starlifter, and also fulfill some of the duties of the Lockheed C-5 Galaxy, freeing the C-5 fleet for outsize cargo.

Variants

  • C-17A: Initial military airlifter version.
  • C-17A “ER”: Unofficial name for C-17As with extended range due to the addition of the center wing tank. This upgrade was incorporated in production beginning in 2001 with Block 13 aircraft.
    •  
  • C-17B: A proposed tactical airlifter version with double-slotted flaps, an additional main landing gear on the center fuselage, more powerful engines, and other systems for shorter landing and take-off distances. Boeing offered the C-17B to the U.S. military in 2007 for carrying the Army’s Future Combat Systems (FCS) vehicles and other equipment.
  • MD-17: Proposed variant for civilian operators, later redesignated as BC-17 after 1997 merger
RoleStrategic and tactical airlifter
National originUnited States
ManufacturerMcDonnell Douglas / Boeing
First flight15 September 1991
Introduction17 January 1995
StatusIn service
Primary usersUnited States Air Force
Indian Air Force
Royal Air Force
See Operators for others
Produced1991–2015
Number built279
Developed fromMcDonnell Douglas YC-15

Development

By 1980, the USAF found itself with a large fleet of aging C-141 Starlifter cargo aircraft. Compounding matters, USAF needed increased strategic airlift capabilities to fulfill its rapid-deployment airlift requirements. The USAF set mission requirements and released a request for proposals (RFP) for C-X in October 1980. McDonnell Douglas elected to develop a new aircraft based on the YC-15. Boeing bid an enlarged three-engine version of its AMST YC-14. Lockheed submitted two designs, a C-5-based design and an enlarged C-141 design. On 28 August 1981, McDonnell Douglas was chosen to build its proposed aircraft, then designated C-17. Compared to the YC-15, the new aircraft differed in having swept wings, increased size, and more powerful engines.[6] This would allow it to perform the work done by the C-141, and to fulfill some of the duties of the Lockheed C-5 Galaxy, freeing the C-5 fleet for outsize cargo.[

Specifications (C-17A) Data from Data from Flight Global

General characteristics

  • Crew: 3 (2 pilots, 1 loadmaster)
  • Capacity: 170,900 lb (77,519 kg) of cargo distributed at max over 18 463L master pallets or a mix of palletized cargo and vehicles
    • 102 paratroopers or
    • 134 troops with palletized and sidewall seats or
    • 54 troops with sidewall seats (allows 13 cargo pallets) only or
    • 36 litter and 54 ambulatory patients and medical attendants or
    • Cargo, such as one M1 Abrams tank, three Strykers, or six M1117 Armored Security Vehicles
  • Length: 174 ft (53 m)
  • Wingspan: 169 ft 9.6 in (51.755 m)
  • Height: 55 ft 1 in (16.79 m)
  • Wing area: 3,800 sq ft (350 m2)
  • Aspect ratio: 7.165
  • Airfoil: root: DLBA 142; tip: DLBA 147
  • Empty weight: 282,500 lb (128,140 kg)
  • Max takeoff weight: 585,000 lb (265,352 kg)
  • Fuel capacity: 35,546 US gal (29,598 imp gal; 134,560 l)
  • Powerplant: 4 × Pratt & Whitney F117-PW-100 turbofan engines, 40,440 lbf (179.9 kN) thrust each

Specifications (C-17A)

Performance

Performance

  • Maximum speed: Mach 0.875 (670 mph, 1,080 km/h)
  • Cruise speed: 450 kn (520 mph, 830 km/h) (M0.74–0.79)
  • Range: 2,420 nmi (2,780 mi, 4,480 km) with 157,000 lb (71,214 kg) payload
  • Ferry range: 4,300 nmi (4,900 mi, 8,000 km)
  • Service ceiling: 45,000 ft (14,000 m)
  • Takeoff run at MTOW: 8,200 ft (2,499 m)
  • Takeoff run at 395,000 lb (179,169 kg): 3,000 ft (914 m)[206]
  • Landing distance: 3,500 ft (1,067 m) with maximum payload[5

Avionics

Avionics

  • AlliedSignal AN/APS-133(V) weather and mapping radar