The Basic Structure Weight (BSW) in aircraft design refers to the weight of the fundamental structural components of the aircraft, which are essential for its integrity and functionality. These components include the airframe, wings, fuselage, landing gear, and other structural elements. BSW is a critical parameter in aircraft design, as it forms the foundation for calculating the aircraft’s overall weight and performance. Here’s the formula, definition, and SI unit for Basic Structure Weight:
Formula for Basic Structure Weight (BSW): The BSW is typically determined through engineering analysis and measurements rather than a single formula. It involves summing up the weights of various structural components that make up the aircraft. Mathematically, it can be expressed as:
- BSW: Basic Structure Weight, representing the combined weight of the essential structural elements of the aircraft, typically measured in kilograms (kg) or pounds (lb).
- Weight of Airframe: The mass of the main supporting structure of the aircraft, excluding other components like wings and tail.
- Weight of Wings: The mass of the aircraft’s wings, including the wing structure and control surfaces.
- Weight of Fuselage: The mass of the aircraft’s main body, which houses the cockpit, cabin, and cargo compartments.Weight of Landing Gear: The mass of the landing gear components, including wheels, struts, and associated structures.
- Weight of Other Structural Components: This may include weights of items such as tail sections, horizontal stabilizers, and vertical stabilizers.