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Boeing 747-8 Jumbo Jet

Boeing 747-8 Jumbo Jet

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The Boeing 747-8 is a wide-body airliner developed by Boeing Commercial Airplanes, the latest and largest variant of the 747. After introducing the 747-400.

Boeing 747-8 Jumbo Jet

The Boeing 747-8 is a wide-body airliner developed by Boeing Commercial Airplanes, the latest and largest variant of the 747. After introducing the 747-400, Boeing considered larger 747 versions as alternatives to Airbus A3XX. The stretched 747 Advanced was launched as the 747-8 on November 14, 2005, for a market forecast of 300 aircraft. The first 747-8F Freighter performed its maiden flight on February 8, 2010, and the passenger 747-8I Intercontinental followed suit on March 20, 2011. The cargo version was first delivered in October 2011 and the airliner began commercial service in June 2012.

Design

  • The 747-8 is a development of the Boeing 747 that takes advantage of improvements in technology and aerodynamics. The two 747-8 variants feature a fuselage stretch of 18.3 ft (5.6 m) over the 747-400, bringing the total length to 250 ft 2 in (76.25 m). The 747-8 is the world’s longest currently operational passenger airliner, surpassing the Airbus A340-600 by 3.1 ft (0.95 m).[113][114] With a maximum take-off weight of 975,000 lb (442 t),[115] the 747-8 is the heaviest aircraft, commercial or military, manufactured in the U.S.[114]
RoleWide-body jet airliner
National originUnited States
ManufacturerBoeing Commercial Airplanes
First flight747-8F: February 8, 2010
747-8I: March 20, 2011
Introduction747-8F: October 12, 2011, with Cargolux
747-8I: June 1, 2012, with Lufthansa
StatusIn service
Primary usersUPS Airlines
Lufthansa
Korean Air
Cathay Pacific Cargo
Produced2008–present
Number built141 as of November 2020
Developed fromBoeing 747-400
VariantsBoeing VC-25B

Development

The Boeing 747-8 is a wide-body airliner developed by Boeing Commercial Airplanes, the latest and largest variant of the 747. After introducing the 747-400, Boeing considered larger 747 versions as alternatives to Airbus A3XX. The stretched 747 Advanced was launched as the 747-8 on November 14, 2005, for a market forecast of 300 aircraft. The first 747-8F Freighter performed its maiden flight on February 8, 2010, and the passenger 747-8I Intercontinental followed suit on March 20, 2011. The cargo version was first delivered in October 2011 and the airliner began commercial service in June 2012.

Variant747-8I747-8F
Cockpit crewTwo
Seat/cargo capacity467 in 3-class303,700 lb / 137.7 t
Exit limit[177]6058
Cargo volume6,225 cu ft (176 m3)30,288 cu ft (858 m3)
Length250 ft 2 in / 76.3 m
Height63 ft 6 in / 19.4 m
Wingspan224 ft 7 in / 68.4 m
Wing554 m2 (5,960 sq ft),[178] sweep 37.5°,[178] 8.45 AR
Cabin width20 ft (6.1 m)[179]:17
MTOW[179]:7–8987,000 lb / 447.7 t
OEW[179]:7–8485,300 lb / 220.1 t434,600 lb / 197.1 t
Max. payload[179]:7–8167,700 lb / 76.1 t292,400 lb / 132.6 t
Fuel capacity[179]:7–863,034 USgal / 238.6 m³
426,109 lb / 193.3 t
59,734 USgal / 226.1 m³
400,218 lb / 181.5 t
Cruise speedMach 0.86 (493 kn; 914 km/h)Mach 0.85 (488 kn; 903 km/h)
MMoMach 0.9 (516 kn; 956 km/h)[177]
Range7,730 nmi (14,320 km)[180][a]4,120 nmi (7,630 km)[182]
Ceiling43,100 ft (13,100 m)[177]
Engines (4×)66,500 lbf (296 kN) GEnx-2B67

Specifications (747-8)

Performance

Related development

  • Boeing 747 – American wide-body long–range commercial jet aircraft
  • Boeing 747-400 – Wide-body airliner, improved production series of the 747
  • Boeing Business Jet – Executive transport variants of several Boeing airliners
  • Boeing New Large Airplane – 1990s concept for an all-new quadjet airliner in the 500+ seat market
  • Boeing VC-25B – Presidential Airlift aircraft under development based on the 747-8 Intercontinental

 

Avionics

On September 11, 2012, an AirBridgeCargo 747-8F experienced a major engine malfunction that spread a significant amount of metallic debris on the runway. Like in a similar event during pre-flight taxi tests, the low-pressure turbine shaft separated and moved the low-pressure turbine backward braking on surrounding hardware (by design to avoid turbine overspeed).[172] The NTSB issued urgent safety recommendations to the FAA to require ultrasonic scans for midshaft fractures before use of GEnx engines and require repetitive on-wing inspections of the engine to detect cracks.[173]

 

Aircrafttoaal encyclopedia

An air force, also known in some countries as an aerospace force or air army, is in the broadest sense, the national military branch that primarily conducts aerial warfare.