श्री स्वामी रत्न

The Boeing 777 is a long-range wide-body twin-engine jet airliner developed and manufactured by Boeing Commercial Airplanes. It is the world's largest twinjet and has a typical seating capacity of 314 to 396 passengers, with a range of 5,240 to 8,555 nautical miles (9,704 to 15,844 km). Commonly referred to as the "Triple Seven",[4][5] its distinguishing features include the large–diameter turbofan engines, long raked wings, six wheels on each main landing gear, fully circular fuselage cross-section,[6] and a blade-shaped tail cone.[7] Developed in consultation with eight major airlines, the 777 was designed to replace older wide-body airliners and bridge the capacity difference between Boeing's 767 and 747. Boeing's first fly-by-wire airliner, it has computer-mediated controls. It was also the first commercial aircraft to be designed entirely with computer-aided design.

The 777 is produced in two fuselage lengths as of 2018. The original 777-200 variant entered commercial service in 1995, followed by the extended-range 777-200ER in 1997. The stretched 777-300, which is 33.25 ft (10.1 m) longer, followed in 1998. The initial 777-200, extended-range -200ER, and -300 versions are equipped with General Electric GE90, Pratt & Whitney PW4000, or Rolls-Royce Trent 800 engines. They have since been collectively referred to as 777 Classics.[8] The extended-range 777-300ER and ultra long-range 777-200LR variants entered service in 2004 and 2006 respectively, while the 777F, a freighter version, debuted in February 2009; these second-generation variants all feature high-output GE90 engines and extended raked wingtips. The 777-200LR is one of the world's longest-range airliners, able to fly more than halfway around the globe and holds the record for the longest distance flown non-stop by a commercial aircraft.[9][10] In November 2013, Boeing announced the development of the third-generation of the 777, the 777X, consisting of the 777-8 and 777-9 variants. The 777X features composite folding wings and GE9X engines plus further technologies developed for the Boeing 787, and is scheduled to enter service by 2020.

The Airbus A380 is a double-deck, wide-body, four-engine jet airliner manufactured by Airbus.[6][7] It is the world's largest passenger airliner, and the airports at which it operates have upgraded facilities to accommodate it. It was initially named Airbus A3XX and designed to challenge Boeing's monopoly in the large-aircraft market. The A380 made its first flight on 27 April 2005 and entered commercial service on 25 October 2007 with Singapore Airlines. An improved version, the A380plus, is under development.

The A380's upper deck extends along the entire length of the fuselage; it is narrower than the lower deck but remains comparable to the width of other wide-body aircraft. This gives the A380-800's cabin 550 square metres (5,920 sq ft) of usable floor space,[8] 40% more than the next largest airliner, the Boeing 747-8,[9] and provides seating for 525 people in a typical three-class configuration or up to 853 people in an all-economy class configuration. The A380-800 has a design range of 8,500 nautical miles (15,700 km), serving the fourth- and seventh-longest non-stop scheduled flights in the world, and a cruising speed of Mach 0.85 (488 kn; 903 km/h) at cruising altitude.

As of September 2018, Airbus had received 331 firm orders and delivered 230 aircraft; Emirates is the biggest A380 customer with 162 ordered of which 105 have been delivered.[2]