The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 03, 2018

Filed:

Apr. 17, 2014
Applicant:

Airbus Operations Limited, Bristol, GB;

Inventors:

Tony Fong, Bristol, GB;

Timothy Axford, Bristol, GB;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 3/18 (2006.01); B64C 23/06 (2006.01); B64F 5/10 (2017.01); B29C 70/22 (2006.01); B29C 70/32 (2006.01); B29C 70/30 (2006.01); B32B 38/18 (2006.01); B29L 31/30 (2006.01);
U.S. Cl.
CPC ...
B64C 3/185 (2013.01); B29C 70/222 (2013.01); B29C 70/30 (2013.01); B29C 70/32 (2013.01); B32B 38/1866 (2013.01); B64C 23/069 (2017.05); B64F 5/10 (2017.01); B29L 2031/3085 (2013.01); B32B 2305/72 (2013.01); Y02T 50/164 (2013.01); Y02T 50/433 (2013.01);
Abstract

A braided composite spar or preform for a braided composite spar, comprising a plurality of tubular plies of braided fibers, wherein the spar or preform extends lengthwise from a root to a tip, and the spar or preform has a tapered portion in which each ply has a height which reduces and a width which increases as it extends toward the tip. The spar or preform can be used to provide a tubular main spar for a winglet. The winglet also has a front spar with a front spar web, an upper front spar cap, and a lower front spar cap. An upper skin of the winglet is joined to the braided spar and the upper front spar cap. A lower skin of the winglet is joined to the braided spar and the lower front spar cap.


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