An aerospace vehicle (100) includes a plurality of composite stiffeners (220). Each stiffener of the plurality has a stack of plies of reinforcing fibers. To increase stiffness without increased weight, at least some of the plies in the stack have reinforcing fibers oriented at ±± with respect to an axis of primary loading, where ± is between 2 and 12 degrees. At least some of the plies in the stack have reinforcing fibers oriented at ±² with respect to the axis of primary loading, where ² is between 50 and 85 degrees.
COMPOSITE STIFFENERS FOR AEROSPACE VEHICLES
VERBUNDVERSTEIFUNGEN FÜR RAUMFAHRZEUGE
RAIDISSEURS COMPOSITES POUR VÉHICULES AÉROSPATIAUX
2016-12-28
Patent
Electronic Resource
English
IPC: | B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B64C AEROPLANES , Flugzeuge |
COMPOSITE ASSEMBLY WITH INTEGRALLY FORMED PANELS AND STIFFENERS
European Patent Office | 2021
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