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Slotted variable camber flapVariable camber actuator assemblies broaden the range of speeds at which lift to drag performance is maximized for slotted flap wings. Lift is improved over a broader range of cruising speeds by varying wing camber with rotational flap movements that do not introduce wing slots and induced drag. Forward flaps are secured to forward flange links which extended from, and are a part of forward flap linkage assemblies. The forward flaps rotate about flap pivots with their rotational displacement controlled by variable camber actuator assemblies located between the forward flaps and the forward flange links. Rear flaps are held relative to the forward flaps by rear flap linkage assemblies which may act independently from the forward flap linkage assemblies and the variable camber actuator assemblies. Wing camber is varied by rotating the flaps with the variable camber actuator assemblies while the flaps are in a deployed or tucked position. Rotating the flaps in a tucked position does not introduce significant wing surface discontinuities, and reduces aircraft fuel consumption on most flight profiles.
Document ID
19840014483
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Andrews, D. G.
(Boeing Commercial Airplane Co. Seattle, United States)
Date Acquired
September 4, 2013
Publication Date
April 24, 1984
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
Patent Number: US-PATENT-4,444,368
Patent Number: NASA-CASE-LAR-12541-1
Patent Application Number: US-PATENT-APPL-SN-315588
Accession Number
84N22551
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,444,368|NASA-CASE-LAR-12541-1
Patent Application
US-PATENT-APPL-SN-315588
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