A duct stringer (20, 30) has duct walls (26) providing a duct (45) with a closed cross-section; and a bulkhead (21) in the duct. The duct is adapted to transport fluid, and the bulkhead is adapted to block the flow of fluid along the duct. The bulkhead is adhered to the duct walls by one or more co-cured or co-bonded joints (70).The bulkhead comprises a pair of bulkhead parts (21 a, b), each with a web (50) and one or more flanges (51). The duct stringer is manufactured by positioning the mandrels (60) end-to-end with the bulkhead parts back-to-back between them; wrapping or laying-up the duct walls around the bulkhead parts and the mandrels; co-curing or co-bonding the flanges of the bulkhead parts to the duct walls; and after the bulkhead has been adhered to the duct walls, removing the mandrels from opposite ends of the duct.
DUCT STRINGER WITH BULKHEAD
KANALSTRINGER MIT TRENNWAND
LONGERON DE CONDUIT AVEC CLOISON
2021-10-27
Patent
Electronic Resource
English