Boeing 787 Dreamliner Engine

Boeing 787 Dreamliner Specs

Boeing 787 Specs *

There are three different variations of the Boeing 787 Dreamliner although to date only two are flying, the Boeing 787 8 and the Boeing 787 9.  The table at the bottom of the page shows the detailed specifications of each of the variants.

As well as bringing large jet ranges to a medium sized jet, the Boeing 787 will also match the speeds of larger jets, being a cruise of Mach 0.85. This is delivered with an environmentally friendly fuel saving in the area of 20%.

Key to delivering this efficiency is a suite of new technologies.

Boeing 787 Composites *

Weight is being reduced by the fact that up to 50% of the aircraft is built using composite materials, including the fuselage and wings. To put this in perspective, compare the Boeing 787 with Boeings’ current top selling Aircraft, the Boeing 777.

Boeing 787 Dreamliner
Composite Materials 50 Per Cent
Aluminium 20 Per Cent
Other Materials 30 Per Cent
Boeing 777
Composite Materials 12 Per Cent
Aluminium 50 Per Cent
Other Materials 38 Per Cent

The fuselage is constructed using single piece barrels joined end to end instead of multiple panels. This reduces the need for around 40,000—50,000 fasteners. Additionally it increased strength allowing for higher cabin pressures.

The Boeing 787 carries self monitoring systems that are able to report to ground based computer systems on the state of health of the aircraft and its systems.  One third of the efficiencies come from the new technology engines. Boeing has chosen two engines to work with; the General Electric GEnx and Rolls-Royce Trent 1000.  Both engines move from the old Bleed Air systems of powering aircraft systems such as; air conditioning and start-up, to electrical, thus moving to a more electrical aircraft. This is weight saving as well as less power drain on the engines.

Boeing 787 Dreamliner Materials Pictorial *

Boeing 787 Dreamliner construction materials

A pictorial representation of the materials used to construct the Boeing 787 Dreamliner.

Start or add you your own airliner collection today with this life like Boeing 787 8 model.

Both engine types have an identical interface allowing operators to fit either type of engine when required. The engine nacelles also feature chevroned trailing edges of the casing to reduce engine noise. For the first time Pratt and Whitney have not had a launch product, as it is believed they could not make the business case work to develop this kind of engine.
An Active Gust Alleviation system, similar to the system that Boeing built for the B-2 bomber, improves ride quality. Boeing, as part of its “Quiet Technology Demonstrator Project”, experimented with several engine noise-reducing technologies for the Boeing 787. Among these was a redesigned air inlet containing sound-absorbing materials and redesigned exhaust duct covers whose rims are tipped in a toothed pattern to allow for quieter mixing of exhaust and outside air.  Boeing found these developments made the Boeing 787 significantly quieter both inside and out.

A special toilet has been designed to accommodate wheelchair passengers, a 56 inch by 57 inch lavatory has a movable wall so that two lavatories can be converted to one to allow access.


Boeing 787 Dreamliner wing

Boeing 787 Dreamliner wing comparison.

Boeing 787 Dreamliner cut away

Boeing 787 Dreamliner cut away.

Boeing 787 Dreamliner Specs Table *

Boeing 787 Dreamliner
Variant Boeing 787 8 Boeing 787 9 Boeing 787 10
Boeing_787_9 Boeing_787_10
  Maiden Flight 15 December 2009 17 September 2013 Yet to fly.
  Launch Delivery 25 September 2011 10 July 2014 2018
  Launch Airline All Nippon Airways Air New Zealand Singapore Airlines
 Boeing 787 Price List (average) US$224.6 Million US$264.6 Million US$306.1 Million
  Fuselage Length 56.7 Metres (186 Feet) 62.8 Metres (206 Feet) 68.3 Metres (224 Feet)
  Fuselage Height
5.97 Meters (19 Feet 7 Inches)
  Fuselage Width (outside)
5.77 Meters (18 Feet, 11 Inches)
  Max. Cabin Width
5.49 Meters (18 Feet)
  Wing Span
60.1 Metres (197 Feet, 3 Inches)
  Wing Area
325 Square Metres (3,501 Square Feet)
  Wing Sweep Back
32.2 Degrees
 Tail Fin
  Aircraft Height
16.9 Metres (55 Feet 6 Inches)
 Under Carriage
  Number of Nose Wheels
  Number of Main Wheels
2 x Bogies of 4
Engines x two
General Electric GEnx-1B or Rolls-Royce Trent 1000
  Thrust 64,000 lbf (280 kN) 71,000 lbf (320 kN) 76,000 lbf (340 kN)
  Seating 242 (3 class) 280 (3 class) 323 (3 class)
  Seats Abreast
Typical 9 seats abreast in 3-3-3 configuration with seat width of 43.7cm(17.2in) at armrest level
  Maximum Take Off Weight 228,000 kg (502,500 lb)
251,000 kg (553,000 lb)
  Maximum Landing Weight 172,000 kg (380,000 lb) 193,000 kg (425,000 lb) 202,000 kg (445,000 lb)
  Maximum Zero Fuel Weight 161,000 kg (355,000 lb) 181,000 kg (400,000 lb) 193,000 kg (425,000 lb)
  Operating Empty Weight Weight 118,000 kg (259,500 lb) TBA TBA
Fuel Capacity Litres 126,210 Litres (33,340 US gal)
138,700 Litres (36,641 US gal)
  Vmo/Mmo Velocity/Mach Max Operating speed
Mach 0.90 (593 mph, 515 knots, 954 km/h at 35,000 ft/10,700 meters)
  Cruise Speed IAS/Mach
Mach 0.85 (567 mph, 490 knots, 913 km/h at 35,000 ft/10,700 m)
43,000 Feet (13,100 Metres)
Range 7,650–8,200 nmi (14,200–15,200 km; 8,800–9,440 mi) 8,000–8,500 nmi (14,800–15,700 km; 9,210–9,780 mi) 7,000 nmi (13,000 km; 8,060 mi)
Cargo Capacity 137 m3 (4,826 cu ft) 28× LD3 or 9x (88×125) pallets or 8x (96×125) pallets + 2x LD3 172 m3 (6,086 cu ft) 36× LD3 or 11x (88×125) pallets or 11x (96×125) pallets” 175 m3 (6,187 cu ft) 40× LD3 or 13x (88×125) pallets or 13x (96×125) pallets
Take Off distance at MTOW at sea level (ISA) 10,300 ft (3,100 m) High Thrust Rating: 8,500 ft (2,600 m) TBA TBA
Variant Boeing 787 8 Boeing 787 9 Boeing 787 10

If there is more you want to learn about this airliner, please visit: Boeing 787 Home, Boeing 787 Interior, Boeing 787 Assembly, Boeing 787 Order Book and Boeing 787 History,

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