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Sunday, 9 March 2014

Boeing 777 Facts To Know






Malaysia's fleet of Boeing 777-200ER comes with a badge of being one of the world's safest and most popular jets.





Unveiled in June 1995, the Boeing 777 or "Triple Seven" is the world's largest twin-engine jet

It is the world's largest twinjet and has a typical seating capacity for 314 to 451 passengers, with a range of 5,235 to 9,380 nautical miles (9,695 to 17,372 km). Commonly referred to as the "Triple Seven", its distinguishing features include the largest-diameter turbofan engines of any aircraft, six wheels on each main landing gear, a circular fuselage cross-section, and a blade-shaped tail cone.

The 777 is the established market leader in the 300 to 400 seat market with almost 1,200 orders from 61 customers around the world. With a dominant 100% market share vs. the A340 over the last five years, the 777 passenger airplanes continue to perform well in the market.

It burns less fuel and is capable of flying long distances, making it a favourite among airlines. It has essentially replaced the Boeing 747 as a bestseller.




Airlines like the plane because it is capable of flying extremely long distances thanks to two giant engines. Each engine is so massive that a row of at least five coach seats could fit inside it. By having just two engines, the plane burns through less fuel than four-engine jets, like the Boeing 747, which it has essentially replaced.

It is said to be one of the safest aircrafts in aviation history


"It has provided a new standard in both efficiency and safety," said Richard Aboulafia, an aviation consultant with the Teal Group. "The 777 has enjoyed one of the safest records of any jetliner built."
 yahoo.com
The last crash involving a 777 with the same engine was on January 17, 2008, when a British Airways Boeing 777-236ER flying from Beijing to London crash-landed at Heathrow airport. The first fatal crash in its 19-year history came in July 2013, when an Asiana Airlines jet landed short of the runway in San Francisco. Three of the 307 people aboard died, one of whom was hit by an emergency truck after surviving the crash.

The flight-control system for the 777 airplane is different from those on other Boeing airplane designs


Rather than have the airplane rely on cables to move the ailerons, elevator, and rudder, Boeing designed the 777 with fly-by-wire technology. As a result, the 777 uses wires to carry electrical signals from the pilot control wheel, column, and pedals to a primary flight computer.

In designing the 777 as its first fly-by-wire commercial aircraft, Boeing decided to retain conventional control yokes rather than change to sidestick controllers as used in many fly-by-wire fighter aircraft and in many Airbus airliners. Along with traditional yoke and rudder controls, the cockpit features a simplified layout that retains similarities to previous Boeing models. The fly-by-wire system also incorporates flight envelope protection, a system that guides pilot inputs within a computer-calculated framework of operating parameters, acting to prevent stalls and overly stressful maneuvers. This system can be overridden by the pilot in command if deemed necessary.

source: says.com

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