초록 ▼

To virtually eliminate core crush in honeycomb sandwich structure for fixed leading edge panels, I rearrange the order of the plies. I use a full surface, facing ply of woven fabric impregnated with resin adjacent the core. This ply passes over an erosion strip at the part margin while lower plies t

To virtually eliminate core crush in honeycomb sandwich structure for fixed leading edge panels, I rearrange the order of the plies. I use a full surface, facing ply of woven fabric impregnated with resin adjacent the core. This ply passes over an erosion strip at the part margin while lower plies terminate at the erosion strip. The facing ply is in contact with substantially the entire surface of the core along the entire skin-core interface to prevent slipping of the skin relative to the core during curing. I orient the facing ply 0/90.

대표청구항 ▼

[ I claim:] [1.] Composite honeycomb sandwich panel resistant to core crush caused by slippage of a composite laminate relative to a honeycomb core during cure, the panel having a trim margin, comprising:(a) a honeycomb core having opposed contact surfaces defined by the open ends of the cells;(b) a

[ I claim:] [1.] Composite honeycomb sandwich panel resistant to core crush caused by slippage of a composite laminate relative to a honeycomb core during cure, the panel having a trim margin, comprising:(a) a honeycomb core having opposed contact surfaces defined by the open ends of the cells;(b) a full facing ply of woven fabric impregnated with resin contacting one contact surface of the core;(c) an erosion strip on at least one margin of the structure for preventing erosion and delamination of the laminate; and(d) at least one laminate adhered to the core through the facing ply, the laminate butting against the erosion strip, rein the facing ply extends over the erosion strip and ties down on a layup mandrel outside the trim margin of the panel to prevent damaging slippage of the laminate relative to the core that would produce core crush during autoclave curing of the structure to adhere the core to the laminate.