( December 2022) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this section by adding citations to reliable sources. The maximum zero fuel weight is an important parameter in demonstrating compliance with gust design criteria for transport category airplanes. Z F W + F O B = T O W Maximum zero fuel weight in type certification MZFW : The maximum permissible weight of an aircraft with no disposable fuel or oil. When an aircraft is being loaded with fuel it is most important to ensure that the takeoff weight will not exceed the maximum permissible takeoff weight. When an aircraft is being loaded with crew, passengers, baggage and freight it is most important to ensure that the ZFW does not exceed the MZFW. Maximum zero fuel weight in aircraft operations If the limitations applicable to a transport category airplane type include a maximum zero-fuel weight it must be specified in the Airplane Flight Manual and the type certificate data sheet for the airplane type. The addition of usable and consumable items to the zero fuel weight must be in accordance with the applicable government regulations so that airplane structure and airworthiness requirements are not exceeded. It may include usable fuel in specified tanks when carried in lieu of payload. The maximum zero fuel weight (MZFW) is the maximum weight allowed before usable fuel and other specified usable agents (engine injection fluid, and other consumable propulsion agents) are loaded in defined sections of the aircraft as limited by strength and airworthiness requirements. When the aircraft is loaded before flight, the zero-fuel weight must not exceed the maximum zero-fuel weight. This limitation is specified to ensure bending moments on the wing roots are not excessive during flight. Unusable fuel is included in ZFW.įor many types of airplane, the airworthiness limitations include a maximum zero-fuel weight. The zero-fuel weight (ZFW) of an aircraft is the total weight of the airplane and all its contents, minus the total weight of the usable fuel on board.
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