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Aviation History
1911
1911 - 0645.PDF
JULY 29, 1911. IftlGHT HE BREGUET AEROP E. Bjg fr... Concluded from page 6%j$) WHEN at rest theplanes have an angle of incidence of about 11°, and with its wings thus "Tol<!BIP* When we speak of a single row the strength of the construction is such that under test a load of of struts it is necessary to observe that even this single row Tail of the Breguet biplane. Diagram illustrating the suspension of the under carriage on the Breguet biplane. 20 lbs. per sq. ft. reduces the angle of incidence to about 2° without permanently distorting any of the constructive details. Tests made by loading the wings with sand have been conducted officially at the Douai works. Of the importance of a variable angle of incidence in connection with the problem of variable speed our readers are already acquainted through our discussion of the subject in a series of articles entitled '' Can we fly faster for less Power," which ap peared in FLIGHT recently. An important outcome of the use of but one row of struts between the main planes is that provision can be made for folding the wings against the body of the machine as a means of reducing the bulk for transport. The manner in which this is done on the Breguet aeroplane is very clearly illustrated "fay the accom panying illustrations, one of which is a photograph of the machine The Breguet biplane with its wings folded for transport. %ft 'qffftff '/ On the left is a view of the knuckle-joint attachment of the wings to the body ; in the centre is the universal-joint supporting the tail, and on the right is shown the method of anchoring the tie-wires to the base of a strut on the main plane. 647 C 2
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