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Aviation History
1924
1924 - 0620.PDF
JCHT the very pronounced stagger some unusual features have had to be incorporated in order to make the folding possible. From the side elevation in the general arrangement drawings, it will be seen that the effect of the stagger is to swing the wings upwards when folded. In order to reduce this angle the top hinge is not on the rear spar, but on a specially reinforced three-ply box structure some distance aft of the spar. The bottom hinge is on the spar, but the hinge pin is placed at a considerable angle with the vertical plane of the spar. The top plane does not require any special preparation before folding, except to fold the trailing portion of the centre section, but the lower plane trailing edge has to be folded up .or down in order to clear the fuselage in the folded position. Consequently, portions of the trailing edge have had to be made to hinge up or down, and special L-shaped locking pins SEPTEMBER 25, 1924 of the form shown in Fig. 3 are employed. These are locked in place by " safety pin " wire locking devices. The undercarriage is of the plain V-type, with rubber cord shock absorbers. Special wheels, with" ash rims and double- diagonal mahogany sides, have been built for the machine, and their shape is such as to offer the least, possible resistance At the moment of writing it is not definitely known what engine will be fitted, but it is hoped to be able to obtain the information in time to include in the table of particulars given on p. 588, to which, therefore, we would refer our readers for information concerning the engine. The Vickers " Vagabond," as already mentioned, was built at the Avro works at Hamble, and the workmanship is very good, and quite up to the very high standard set byVickers themselves in the case of the " Viget," which was generally admired for its excellent workmanship. • 3> 3> ^ THE WESTLAND "WOOD PIGEON" LIGHT BIPLANE (No. 5) Bristol " Cherub " Engine THE " Wood Pigeon " light biplane designed and built by the Westland Aircraft Works of Yeovil for the Lympne com petitions is in outward appearance a normal single-bay tractor biplane, but when one comes to look into the detail construction many novel and interesting features are to be found, notably in the system evolved for folding the wings, which is different from any we have seen so far. In addition the biplane wings are provided with wing flap gear which can be used either as a perfectly automatic device or as a mechanically operated variable camber gear—i.e., the move ment of the flaps is automatic in normal flying, but should the pilot, for some reason or other, desire to give greater No. 5, THE WESTLAND "WOOD PIGEON," Bristol Cherub " engine : Three-quarter front view. No. 5, THE WESTLAND " WOOD PIGEON " : Three-quarter rear view. 620
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