Boeing 737 Max
As far back as 2005 Boeing initiated project Yellowstone 1 (Y-1) to come up with an updated design building on the Boeing 737 Next Generation family. Incorporating technology from the Boeing 787 Dreamliner, the
aim was to achieve fuel savings in the order of 20-25%. However, tests came back with results closer to 10%. It was found that you can’t build a smaller Boeing 787 which is designed for different usage such as lower cycles(take offs and landings) and carrying different systems for longer flights.
The project was shelved but not abandoned. New technologies had to be developed to enable the concept to become an actuality.
On 11 August 2011 the Boeing board approved the 737 Max development project. The new family of Boeing 737s would adopt the same variant numbering system as the 787, namely Boeing 737 Max 7, Boeing 737 Max 8, Boeing 737 Max 9 and Boeing 737 Max10. Details of each as known so far are shown below. The main driver of course was competition to come up with a newer more economic version of the iconic 737 city jet. Airbus Industrie were well on the way to producing their new A320, the A320 NEO (New Engine Option) which would deliver a more economical version of the popular Airbus that is a direct competitor to the 737. After much research and analysis it was determined that applying updates, improvements and modifications to the current Boeing 737 model was by far the best option, cost wise and also speed to market wise.
The first Boeing 737 Max -8 fuselage completed assembly on 13 August 2015 at the Spirit
Aeorsytems plant in Wichita, Kansas. This was a test aircraft and was eventually delivered to launch customer Southwest Airlines. The completed aircraft, named “Spirit of Renton” rolled out of the Boeing Renton Factoryk on 08 December 2015. Nearly 49 years after the frst Boeing 737 took to the air on 09 April 1967, the 737 Max -8 took to the air on its first flight on 29 January 2016.
The new design has some obvious visual differences which include:
737 Max Features Table
| A change to the tail cone to a more tapered aerodynamic shape. This is part of the design improvement to realise an up to
| Boeing 787 like engine nacelles with scalloped casing which allows for a cleaner airflow and less drag.
| A split winglet with fins pointing up and down which reduces weight by a less robust structure required for two smaller fins. It also ensures that the aircraft can still utilise ICAO gate reference C gates ( wing span – 24m (78.7′) – <36m (118.1′) ) whislt enjoying a greater wing area for higher lift and therefore lower fuel consumption.
|Leap-1B engines with a larger fan diameter of 1.76 Metres (69.4 in).|
| An increase of 8 inches in length to the nose wheel strut to accommodate the larger diameter engines. This ensures a 43CM (17 IN) clearance between the bottom of the engine casing and the runway surface.
| A redesigned and lengthened engine pylon to further accommodate the larger engines. The new Leap 1B engines are postioned further forward and slightly higher than their predecessors to accommodate their larger diameter.
|A general strengthening of the air-frame structure.|
Specs for the Boeing 737 Max
|Maiden Flight||Not yet known||29 January 2016
||Not yet known|
|Launch Delivery||Not yet known||2017||Not yet known|
|Launch Airline||Southwest Airlines||Malindo Air (Sub. Lion Air)
|First Delivery||None yet||16 May 2017
|In Current Service||0||11||0|
|Passenger Capacity||172 (Maximum seating)
150 (1-class, average)
138 (2-class, average)
|200 (1-class, high volume)
174 (1-class, average)
162 (2-class, average)
|220 (1-class, high volume)
204 (1-class, average)
178 (2-class, average)
|Power Plant||CFM International|
|Fan Tip Diameter||1.75 m (69in)|
|Thrust||26,786–29,317 lbf (119–130 kN)|
|Fuselage Length||35.6 M (116 ft 8 in)||39.5 M (129 ft 8 in)||42.2 M (138 ft 4 in)||43.8 M (143 ft 8 in)|
|Overall Height||12.3 M (40 ft 4 in)|
|Fuselage Width (Outside)||–||–||–||–|
|Span||35.9 M (117 ft 10 in)|
|Wing Area||127 m2 (1,370 sq ft)|
|Overall Height||12.3 M (40ft 4in)|
|Number of Nose-wheels||2||2||2||2|
|Number of Main-wheels||4||4||4||4|
|Max. Zero Fuel Weight||62,913kg(138,700lb)||65,952kg(145,400lb)||70,987kg(156,500lb)||TBA|
|Max. Takeoff Weight||80,286kg (177,000lb)||82,191kg (181,200lb)||88,314Kg (194,700lb)||TBA|
|Maximum Landing Weight||66,043kg(145,600lb)||69,309kg(152,800lb)||74,344kg(163,900lb)||TBA|
|Capacity (Litres)||25,817L(6,820 USgal), excluding Auxiliary Centre Tank|
|Cruise Speed IAS/Mach||Mach 0.79 (453 kn; 839 km/h)|
|Ceiling (Ft)||41,000 ft (12,000 m)|
|Range with Max Payload(nm)||7,084 Km (3,825 Nm)||6,510 Km (3,515 Nm)||6,510 Km (3,515 Nm)||6,960 Km (3,215 Nm)|
|Variant||737 MAX 7||737 MAX 8||737 MAX 9||737 MAX 10|
If there is more you want to learn about this airliner, please visit: Boeing 737 Home, Boeing 737 Specs, Boeing 737 Order Book, Boeing 737 History, Boeing 737 Assembly and Boeing 737 Interior.
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