Thursday, 1 November 2012

C17 GLOBEMASTER III







The Boeing C-17 Globemaster III is a large military transport aircraft. It was developed for the United States Air Force (USAF) from the 1980s to the early 1990s by McDonnell Douglas; the company later merged with Boeing. 



In addition to the U.S. Air Force, the C-17 is operated by the United Kingdom, Australia ,Canada, Qatar, United Arab Emirates and NATO Heavy Airlift Wing. Additionally, India has ordered C-17s.

A high-wing, 4-engine, T-tailed military-transport aircraft, the multi-service C-17 can carry large equipment, supplies and troops directly to small airfields in harsh terrain anywhere in the world day or night. The massive, sturdy, long-haul aircraft tackles distance, destination and heavy, oversized payloads in unpredictable conditions. It has delivered cargo in every worldwide operation since the 1990s.

CAPABILITIES
The C-17's ability to fly long distances and land in remote airfields in rough, land-locked regions make it a premier transporter for military, humanitarian and peacekeeping missions. It can:
·         Take off from a 7,600-ft. airfield, carry a payload of 160,000 pounds, fly 2,400 nautical miles, refuel while in flight and land in 3,000 ft. or less on a small unpaved or paved airfield in day or night.
·         Carry a cargo of wheeled U.S. Army vehicles in two side-by-side rows, including the U.S. Army's main battle tank, the M-1. Three Bradley infantry-fighting vehicles comprise one load.
·         Drop a single 60,000-lb. payload, with sequential load drops of 110,000 lb.
·         Back up a two-percent slope.
·         Seat 54 on the sidewall and 48 in the centerline.



DESIGN

F117-PW-100turbofan engine
The C-17 is 174 feet (53 m) long and has a wingspan of about 170 feet (52 m). It can airlift cargo fairly close to a battle area. The C-17 is powered by four Pratt & Whitney F117-PW-100turbofan engines, which are based on the commercial Pratt and Whitney PW2040 used on the Boeing 757. Each engine is fully reversible and rated at 40,400 lbf (180 kN) of thrust. The thrust reversers direct engine exhaust air upwards and forward, reducing the chances of foreign object damage by ingestion of runway debris, and providing enough reverse thrust to back the aircraft up on the ground while taxiing.

TECHNICAL SPECIFICATION

     EXTERNAL DIMENSIONS
      Wingspan to winglet tip
       169.8 feet (51.74 m)
Length
174 feet (53.04 m)
       Height at tail
       55.1 feet (16.79 m)
       Fuselage diameter
22.5 feet (6.86 m)
ENGINES
Four Pratt & Whitney PW2040 (military designation F117-PW-100) 40,440 pounds thrust each
CARGO COMPARTMENT
Cargo compartment crew
One loadmaster
Cargo floor length
68.2 feet (20.78 m)
Ramp length
21.4 feet (6.52 m) structural length
Loadable width
18 feet (5.49 m)
Loadable height (under wing)
12.3 feet (3.76m)
Loadable height (aft of wing)
14.8 feet (4.50m)
Ramp to ground angle
9 degrees
Ramp capacity
40,000 lbs. (18,144 kg)
Aerial delivery system capacity
Pallets
Eleven 463L pallets (including 2 on ramp)
Single load airdrop
60,000 pound platform (27,216 kg)
Sequential loads airdrop
110,000 pounds (49,895 kg)
(60 feet of platforms) (18.29 m)
Logistic rail system capacity
Eighteen 463L pallets (including 4 on ramp)
Dual-row airdrop system
Up to eight 18 foot platforms or 12 463L pallets
Combat offload
All pallets from ADS or logistic rail systems
SEATING
Sidewall (permanently installed)
54 (27 each side, 18 inches wide, 24 inch spacing center to center)
Centerline (stored on board)
48 (in sets of six back-to-back, 8 sets)
Palletized (10-passenger pallets)
80 on 8 pallets, plus 54 passengers on sidewall seats
AEROMEDICAL EVACUATION
Litter stations (onboard)
Three (3 litters each)
Litter stations (additional kit)
Nine
Total capability (contingency)
36 litters and 54 ambulatory
COCKPIT
Flight crew
2 pilots
Observer positions
2
Instrument displays
2 full-time all-function head-up displays (HUD),
4 multi-function active matrix liquid crystal displays
Navigation system
Digital electronics
Communication
Integrated radio management system with communications system open architecture (COSA)
Flight controls system
Quadruple-redundant electronic flight control with mechanical backup system
WING
Area
3,800 sq. ft. (353.03 sq. m)
Aspect Radio
7.165
Wing sweep angle
25 degrees
Airfoil type
Supercritical
Flaps
Fixed-vane, double-slotted, simple-hinged
WINGLET
Height
8.92 feet (2.72 m)
Span
9.21 feet (2.81 m)
Area
35.85 sq. ft. (3.33 m)
Sweep
30 degrees
Angle
15 degrees from vertical
HORIZONTAL TAIL
Area
845 sq. ft. (78.50 sq. m)
Span
65 feet (19.81 m)
Aspect ratio
5.0
Sweep
27 degrees
LANDING GEAR
Main, type
Triple Tandem
Width (outside to outside)
33.7 feet (10.26 m)
Tires
50x21-20
Nose, type
Single strut, steerable with dual wheels
Tires
40 x 16 - 14
Wheelbase
65.8 feet (20.06 m)