Aeronautics and astronautics – Aircraft structure – Airfoil construction
Patent
1996-08-09
1999-07-20
Oberleitner, Robert J.
Aeronautics and astronautics
Aircraft structure
Airfoil construction
244131, 244133, 416230A, 416241A, B64C 126
Patent
active
059246499
ABSTRACT:
An aircraft with supporting wings including wing shells with good shear strength made of fibrous composite materials, particularly fiber-reinforced plastics, having members taking up tensile and compressive forces on the inside of the wing shells. The members have unidirectional fibers extending longitudinally of the wing, and fixing elements which can be joined detachably to fuselage attachments are provided on the members at the root end of the wing. Stringers are constructed on the inside of the wing shells and spaced longitudinally of the shells, their fiber component being formed by a fiber layer joined to the fiber layer of the wing shell. Fiber bundles are arranged between spaced stringers as unidirectional stiffening elements. The fiber bundles are embedded in the synthetic resin matrix of the plane load-bearing structure and extend longitudinally of the supporting wing. Groups of three fiber bundles extending adjacent each other are provided, of which the two outer bundles in each case form a loop at the root of the supporting wing to receive a bolt which has to be inserted in the loop perpendicular to the plane of the two fiber bundles. The inner bundle is turned down to form a second loop perpendicular to the first loop to receive a bolt which has to be inserted in and perpendicular to the plane of this loop. Both bolts act as connection members to attachment members on the fuselage.
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patent: 4037990 (1977-07-01), Harris
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Abstract of FR 1,255,075 (translated).
Pabsch Arno
Piening Matthias
Sigle Christof
Deutsch Forschungsanstalt fur Luft-und Raumfahrt e.V.
Oberleitner Robert J.
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