Tuesday 19 March 2013

Boeing 737


The Boeing 737 is a short- to medium-range twin-engine narrow-body jet airliner. Originally developed as a shorter, lower-cost twin-engine airliner derived from Boeing's 707 and 727, the 737 has developed into a family of nine passenger models with a capacity of 85 to 215 passengers. The 737 is Boeing's only narrow-body airliner in production, with the -600, -700, -800, and -900ER variants currently being built. A re-engined and redesigned version, the 737 MAX, is set to debut in 2017.



Originally envisioned in 1964, the initial 737-100 flew in 1967 and entered airline service in February 1968.[4][5] Next the lengthened 737-200 entered service in April 1968. In the 1980s Boeing launched the -300, -400, and -500 models, subsequently referred to as the Boeing 737 Classic series. The 737 Classics added capacity and incorporated CFM56 turbofan engines along with wing improvements. In the 1990s Boeing introduced the 737 Next Generation with multiple changes including a redesigned wing, upgraded cockpit, and new interior. The 737 Next Generation comprises the four -600, -700, -800, and -900ER models, ranging from 102 ft (31.09 m) to 138 ft (42.06 m) in length. Boeing Business Jet versions of the 737 Next Generation are also produced.
The 737 series is the best-selling jet airliner in the history of aviation.[4] The 737 has been continuously manufactured by Boeing since 1967 with 7,457 aircraft delivered and 3,044 orders yet to be fulfilled as of January 2013. 737 assembly is centered at the Boeing Renton Factory in Renton, Washington. Many 737s serve markets previously filled by 707, 727, 757, DC-9, and MD-80/MD-90 airliners, and the aircraft currently competes primarily with the Airbus A320 family. There are, on average, 1,250 Boeing 737s airborne at any given time, with two departing or landing somewhere every five seconds.



HISTORY
Boeing announced it was developing a new higher capacity version of the fast selling 737 in June 1986.
The new aeroplane, the 737, was developed as a 150 seat class 727 replacement. Although Boeing had initially developed the 180 to 200 seat 757 to replace the successful 727, there still existed a considerable market for a near direct size replacement for the popular trijet. By developing the 737 as a minimum change stretch of the 737, Boeing was also able to offer considerable commonality, and thus cost, benefits to operators already with the 737, and to a lesser extent, the 737-200 in their fleets.


The major change of the 737 over the smaller 300 is a 3.05m (10ft 0in) fuselage stretch, consisting of a 1.83m (6ft 0in) stretch forward and a 1.22m (4ft 0in) plug rear of the wing. The stretch increases maximum passenger seating to 188. To cope with the increased weights, more powerful CFM56s are fitted. Other changes are minor, such as a tail bumper fitted to protect against over rotation at takeoff, something that could have become a problem due to the increased fuselage length.
A higher gross weight longer range version is offered. It features increased fuel capacity, and strengthened undercarriage and structures, but is otherwise identical to the standard 737.
The first flight of the 737 occurred on February 19 1988 and it entered airline service in October that year with Piedmont. Of the 737/-400/-500 family the 400 has proven the most successful member behind the 300, its larger capacity and transcontinental US range meaning it has found a very useful market for Boeing as a 727 replacement. However the 737 does face stiff competition from the similar size Airbus A320, which has higher levels of technology, longer range and is faster (but is also heavier).



POWERPLANTS  
Two 97.9kN (22,000lb) CFM International CFM563B2 turbofans, or optionally 104.5kN (23,500lb) CFM563C1s.

PERFORMANCE  
Max cruising speed 912km/h (492kt), long range cruising speed 813km/h (439kt). Standard version range with max payload 4005km (2160nm), typical range with 146 passengers 3630km (1960nm). High gross weight option range with 146 passengers 3850km (2080nm).




WEIGHT  
Standard version operating empty 34,564kg (76,200lb), max takeoff 62,820kg (138,500lb). High gross weight operating empty 34,827kg (76,780lb), max takeoff 68,040kg (150,000lb).

DIMENSIONS  
Wing span 28.88m (94ft 9in), length 36.45m (119ft 7in), height 11.13m (36ft 6in). Wing area 105.4m2 (1135sq ft).

CAPACITY  
Flightcrew of two. Typical two class seating for 146 (eight premium, 138 economy), typical all economy for 159 at 81cm (32in) pitch, or max seating for 188.

PRODUCTION
Orders for the 737 stood at 473 at late 1998, of which approximately 470 were in airline service.





Er. Aakanksha Saxena [B.Tech-EE]
Software Trainee / Blog Master
www.AeroSoftCorp.com
Aakanksha.aerosoft@gmail.com

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