Composite Fan Inter-Blade Platform Reinforcement Against Centrifugal Bowing

The inter-blade platform uses a composite structure combining fiber composite material (carbon fiber) with a lightweight core material (honeycomb or foam). This composite construction provides high strength-to-weight ratio, allowing the platform to resist centrifugal forces while maintaining low weight. The fiber composite layers provide tensile strength and stiffness, while the lightweight core reduces overall mass.

The core is strategically positioned within the outer diameter wall where it is most needed for structural support against centrifugal loading. The core extends through a significant portion of the wall thickness (at least 50% of the length of the body section), providing localized reinforcement precisely where the wall experiences maximum stress during rotation.

The core is integrated within the outer diameter wall during the manufacturing process, combining multiple structural functions into a single unified component. The core is surrounded by the fiber composite material, creating a monolithic structure where the core and shell work together as one integrated platform, reducing the need for separate reinforcement components.

The core is formed using porous or cellular materials such as honeycomb structures or foam. These porous materials provide high strength-to-weight ratios and excellent structural support while adding minimal complexity to the overall design. The cellular structure naturally distributes stresses and provides rigidity without requiring complex reinforcement geometries.