The Boeing 737 MAX, the latest generation of the iconic 737 series, features significant changes compared to its predecessor, the 737 Next Generation (NG). One notable difference is the taller landing gear struts. The reason for this change lies in accommodating larger and more powerful engines while maintaining sufficient ground clearance.
Boeing has aimed to retain commonality with previous models to avoid requiring a new type rating. This decision helps airlines save costs on pilot training and maintenance. According to Boeing, “Because of the 737’s popularity with airlines everywhere around the world, integrating the new 737 MAX is an easy proposition.”
The engines used in the 737 MAX are CFM LEAP-1B turbofan engines, which offer increased thrust and reduced emissions compared to earlier models. Safran Aircraft Engines highlights that these engines provide “15% lower” fuel consumption and CO2 emissions and up to “50% lower” NOx emissions.
The increase in landing gear height by approximately six inches was necessary due to these larger engines. This adjustment allows for adequate ground clearance without major design changes that would require a redesign of the landing gear system.
In terms of structural adjustments, Boeing’s modifications ensure that pilots transitioning from older models can do so with minimal additional training. The company also focused on improving assembly processes and quality control measures during production.
The nose gear on the 737 MAX is similarly raised by six inches, aligning it with the main gear’s height and ensuring proper balance without affecting aircraft operations or takeoff dynamics.
Boeing’s strategy has been to introduce advancements while keeping alterations manageable for operators worldwide. This approach allows continued use under existing certifications while delivering improved performance through technological enhancements.
