Boeing 787 Wallpapers

Boeing 787, or Dreamliner Aircraft, photo wallpapers; Megawallpapers.org : The Boeing 787, or Dreamliner, is a mid-sized wide body passenger airliner currently under development by Boeing Commercial Airplanes and scheduled to enter service in 2008. It will carry between 200 and 350 passengers depending on the seating configuration, and will be more fuel-efficient than comparable earlier airliners. In addition, it will be the first major airliner to use composite material in the majority of its construction.b Prior to January 28, 2005, the 787 was known as the developmental designator 7E7. On April 26, 2005, one year to the day after the launch of the program, the final look of the external 787 design was frozen. With a less rakish nose and a more conventional tail, the final design has superior aerodynamics. When 767 sales began to weaken in the face of competition from the Airbus A330-200 in the late 1990s, Boeing began to consider replacement aircraft. As the 747-400 was also beginning to lose traction, the company proposed two new aircraft � the Boeing Sonic Cruiser and the 747X. The Sonic Cruiser was intended to achieve higher speeds (approximately Mach 0.98) while burning fuel at the same rate as the existing 767 and A330 products. The 747X, intended to compete with the Airbus A380, would stretch the 747-400 and give it a composite supercritical wing to improve efficiency. The limited potential market for superjumbos was an issue, however; the earlier Douglas DC-10 and Lockheed L-1011 widebodies split of a similarly limited market drove both companies out of their strong positions in the commercial aircraft market. Market interest for the 747X was tepid; the Sonic Cruiser had brighter prospects. Several major airlines, primarily in the United States, voiced their optimism for the concept. By decreasing travel time, they would be able to increase customer satisfaction and aircraft utilization. When the September 11, 2001 attacks occurred, the global airline market was upended. Airlines were not able to justify large capital expenditures, and due to increased petroleum prices, were more interested in efficiency than speed. The worst-affected airlines were in the United States � those same airlines were considered to be the most likely customer of the Sonic Cruiser. Boeing proceeded to offer airlines the option of using the airframe for either higher speed or increased efficiency. Due to high projected airframe costs, demand continued to evaporate. Eventually, Boeing switched tracks and decided to offer an alternative project, cancelling the 747X once Airbus launched production of the Airbus A380 aircraft. The replacement for the Sonic Cruiser project was dubbed the 7E7 (with a development code name of Y2.) The "E" was said to stand for various things, depending upon the audience. To some, it stood for "efficiency," to others it stood for "environmentally friendly," etc. In the end, Boeing claimed it merely stood for "Eight," after the aircraft was eventually rechristened "787" when several Chinese airlines ordered the product, as eight is a lucky number in Chinese numerology. The 787 essentially uses the technology proposed for the Sonic Cruiser in a more conventional airframe configuration (see Features). Boeing claims that the 787 will be up to 20% more fuel-efficient than current comparable aircraft. Roughly one-third of this efficiency improvement will come from the engines; another third from aerodynamic improvements and the increased use of lighter weight composite materials; and the rest from advanced systems. The most notable system advancement contributing to efficiency is a "more electric architecture" which replaces bleed air and hydraulic power with electrically powered compressors and pumps. Technology from the Sonic Cruiser and 787 will be used as part of Boeing's project to replace their entire airliner product line, Yellowstone (of which the 787 is the first stage). On December 16, 2003, Boeing announced assembly would take place in Everett, Washington, employing 800 to 1,200 people. On April 6, 2004, Boeing announced that it had selected two engine types, the General Electric (GE) GEnx and Rolls-Royce Trent 1000 to power the 787. Significantly, this leaves Pratt & Whitney unable to offer one of their own engines to 787 customers. Boeing may have wished to rely on two evolved versions of existing engines rather than the higher-risk option of an all new Pratt & Whitney engine, particularly in light of Pratt & Whitney's recent failures in the Regional Jet market and failed PW6000 engine for the A318. For the first time in commercial aviation, both engine types will have a standard interface with the aircraft, allowing any 787 to be fitted with either a GE or Rolls-Royce engine at any time. Engine interchangeability makes the 787 a far more flexible asset to airlines, allowing them to change from one manufacturer's engine to the other's in light of any future engine developments which conform more closely to their operating profile. The engine market for the 787 is estimated $40 billion USD over the next 25 years. The launch of a new airliner can be expected to draw scathing comments from competitors, Boeing's doubt over the A380 and Airbus' mocking of the Sonic Cruiser being recent examples. The 787 is no exception, as Airbus' John Leahy has made attempts at refuting all of Boeing's claims, openly criticizing the large-scale use of composites in the 787's fuselage as being "rushed and ridiculous", ignoring the fact that Boeing built and tested the first composite section while examining the Sonic Cruiser concept nearly 5 years ago making the 787 a significantly refined product. Airbus recently offered the competing A350 using derivatives of the turbofans developed for the 787, modified to generate bleed air. This new jet will make less widespread use of composites with Airbus preferring aluminium-lithium alloys for the fuselage. As of October 13, 2005 the A350 had 143 commitments from various airline companies. Speculation has surfaced that to compete with the Airbus A350, and especially to compete for the large order from Emirates and an order from British Airways, Boeing is studying a "787-10", a double-stretch of the 787-8. This has been reported in numerous articles, including on ATW Online's daily news. [br]megawallpapers.com [br]- wallpapers 640 x 480 [br]- wallpapers 800 x 600 [br]- wallpapers 1024 x 768 [br]- wallpapers 1280 x 960 [br]- wallpapers 1600 x 1200 [br]- wallpapers 1920 x 1440 [br]

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