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Aviation History
1926
1926 - 0452.PDF
JULY 1, 1926 The Hill "Pterodactyl " Bristol " Cherub " The tail-less machine is no novelty, Colonel Dunne having produced aeroplanes of this type in the very earliest days of flying, but in the " Pterodactyl " Capt. G. T. R. Hill has incorporated, in addition to the " tailless " feature, the modern knowledge of aerodynamics, with the result that his machine is freed from the bugbear of aviation, " stalling," as well as possessing other important features. The tips of the back- swept wings are pivoted and act as elevators and ailerons, while sepa- rate rudders project below each wing. The tailless machine appears to promise the possibility of a return to the " pusher " (i.e., engine-behind) type without loss of efficiency. The Vickers " Vespa " Bristol " Jupiter " Reference has already been made to three of the four new Army co- operation machines taking part in the " Fly-past." The fourth is the " Vespa " designed by Mr. Rex Pierson and built by Vickers, Limited. The ability to fly very slowly is a desirable feature in an Army co-operation machine, and it will be seen that the " Vespa " has a large wing area. A somewhat unusual feature of the design is that the fuselage does not rest on the bottom plane, as is usually the case, a gap being left between the fuselage and the lower wing. The fuselage is of relatively small cross-sectional area, and the biplane wings are of unequal span and chord. The Vickers "Vendace" Rolls-Royce " Falcon " Designed to the same specifi- cation as the Blackburn " Sprat," the Vickers " Vendace " is a two- seater training machine capable of being used either as a seaplane or as a land aeroplane. It. was designed by Mr. Rex Pierson, chief designer to Vickers, Limited, among whose famous machines is numbered the " Vimy " on which Sir John Alcock flew across the Atlantic, in 1919. Being intended for training purposes the " Vendace " has a fairly large wing area, with the result that the stalling speed is extremely low. The wing strutting arrangement is somewhat unusual, there being but one strut (on the front spar) in the inner bay. 390:
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