Boeing dreamliner 787

Introduction:
The Boeing 787 Dreamliner is a mid-sized, wide-body, twin-engine jet airliner currently under development by Boeing Commercial Airplanes. It will carry between 210 and 330 passengers depending on variant and seating configuration.

Specifications:

(For Boeing 787-8)
Flight deck crew-Two
Passengers- 210 to 250
Length-186 ft (56.7 m)
Wingspan-197 ft (60.0 m)
Wing sweep-32.2°
Height-55 ft 6 in (16.92 m)
Fuselage height-19 ft 5 in (5.91 m)
Fuselage width-18 ft 11 in (5.75 m)
Cabin width-18 ft (5.49 m)
Cargo capacity-4,400 ft³ (124.6 m³) 28 LD3
Empty weight-242,000 lb (110,000 kg)
Maximum takeoff weight-484,000 lb (220,000 kg)
Cruise speed-Mach 0.85 (903 km/h, 561 mph, 487 knots, at 40,000 ft/12,200 m)
Maximum cruise speed Mach 0.89 (945 km/h, 587 mph, 510 knots, at 40,000 ft/12,200 m) Range- 7,650 – 8,200 NM(14,200 – 15,200 km)
Maximum fuel capacity-33,528 US gal (126,917 L)
Service ceiling-43,000 ft (13,106.4 m)
Engines (2×)-General Electric GEnx or Rolls-Royce Trent 1000
Maximum thrust capability (2×)-64,000 lbf (284.7 kN)

Note: These specifications may differ for Boeing 787-7 and 787-9 from 787-8.

Purpose:


Boeing began considering a replacement for the 767 when sales weakened due to the competing Airbus A330-200. As sales of the Boeing 747-400 also slowed, the company proposed two new aircraft, which were the Sonic Cruiser and the 747X. The Sonic Cruiser would have achieved higher speeds (approximately Mach 0.98) while burning fuel at the same rate as the existing 767. The 747X, competing with the Airbus A380, would have lengthened the 747-400 and improved efficiency by using a composite supercritical wing.