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.
USE OF COMPOSITE STIFFENERS IN AEROSPACE VEHICLES
VERWENDUNG VON VERBUNDVERSTEIFUNGEN IN RAUMFAHRZEUGE
UTILISATION DE RAIDISSEURS COMPOSITES DANS DES VÉHICULES AÉROSPATIAUX
14.03.2018
Patent
Elektronische Ressource
Englisch
IPC: | B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B64C AEROPLANES , Flugzeuge / 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 |
Composite assembly with integrally formed panels and stiffeners
Europäisches Patentamt | 2021
|COMPOSITE STRUCTURES HAVING INTEGRATED STIFFENERS WITH SMOOTH RUNOUTS
Europäisches Patentamt | 2020
|Post-Buckling of Composite Panels with Isogrid Stiffeners
British Library Conference Proceedings | 2008
|