The operating empty weight (OEW) is a decisive parameter in aviation that describes the weight of an aircraft in a specifically defined state. The OEW comprises the manufacturer's empty weight (MWE) plus all standard parts required for flight operations, but excluding usable fuel and payload. It is an important value used to determine the performance and efficiency of an aircraft.
Components of the OEW
ManufacturerEmptyweight (MWE)
The MWE includes the basic structure of the aircraft, all permanently installed systems and unusable fluids required for the operation of the aircraft.
Standard/operator equipment
Cabin equipmentThese include seats, galleys and other facilities necessary for the comfort and safety of passengers and crew.
Emergency equipmentSafety equipment such as life jackets, emergency slides and fire extinguishers required for the operation of the aircraft.
Crew and crew baggage
The weight of the crew, including pilots and cabin crew, and their baggage is included in the OEW.
Operating resources
Navigation charts and manualsAll necessary documents and materials required for the operation and navigation of the aircraft.
Tools and equipmentTools and equipment carried on board for maintenance and operation.
Life jackets and safety equipment: Safety equipment available for the crew and passengers on board.
Liquids
Drinking water and toilet fluidsLiquids required for comfort and hygiene on board.
Oil and hydraulic fluidBoth usable and unusable quantities of oil and hydraulic fluids required for the operation of aircraft systems.
Not included in the OEW
Usable fuel
The usable fuel used to operate the aircraft is not included in the OEW.
Passengers and baggage
The weight of the passengers and their luggage is not included in the OEW.
Freight
Freight or other payloads that are transported are not included in the OEW.
Significance of the OEW
Performance evaluation
The OEW is crucial for assessing the performance of an aircraft. A lower OEW can lead to better fuel efficiency and a higher payload capacity.
Operational planning
The OEW is used for operational planning to ensure that the aircraft is operated within the permissible weight limits and meets all safety and performance requirements.
Cost management
An optimized OEW can lead to lower operating costs, as less fuel is required and maintenance costs can be reduced.
Optimization of the OEW
Optimizing the OEW is a continuous process in aircraft design and development. This includes:
Lightweight construction
Use of lightweight materials and advanced manufacturing techniques to reduce weight.
Efficient systems
Integration of more efficient systems and technologies that reduce weight without compromising performance or safety.
Design adjustments
Design adjustments to eliminate unnecessary mass and improve structural efficiency.
In summary, the OEW is a crucial parameter that provides a standardized basis for comparison and enables the performance evaluation of aircraft. By optimizing the OEW, manufacturers can improve the performance, efficiency and safety of their aircraft.
English 
Deutsch