Although similar to the well-established 737 NG series, the newer 737 MAX offers fuel efficiency that is approximately fourteen percent improved over the latest NG series airplanes. Since the MAX has roughly the same volumetric fuel capacity, this equates to a longer-range capability. The airplane is also amazingly quiet in flight, which makes it very friendly toward the neighborhoods surrounding major airports. To optimize flight control operation, the flight spoiler/speed brake system has been changed from a hydro-mechanical to a fly-by-wire system. However, like all 737s, the ailerons and elevators are powered by dual hydraulic systems, with a cable driven backup system. The rudder is also triple redundant through the use of the Standby hydraulic system. Unlike most modern jetliners today, all 737s are capable of being controlled and landed in the absence of all hydraulic and electrical power. That being said, multiple redundancies in both systems render this eventuality virtually impossible. With the new MAX series, the 737 will be plying the skies of the world for many years to come, offering airlines low fuel burns, and passengers a comfortably quiet flight.
by: Dan Dornseif | November 11, 2018