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Aviation History
1931
1931 - 0714.PDF
FLIGHT, JULY 10, 1931 DETAILS OF THE WING CONSTRUCTION OFTHE MONO-SPAR COMPANY'S EXPERIMENTAL MACHINE: The key diagram shows the location of thedetails illustrated in sketches A-to H. : J (FLIGHT Copyright Sketches.) tion, and will be tested in flight shortly. About a yearago, the Mono-Spar Co., Ltd., decided to build a small aeroplane in order to test out the monospar principle inactual flight, and arrangements were made with the Gloster Aircraft Co., Ltd., to build the machine at their Brock-worth works. For various reasons, the work has taken a considerable time, but the machine was finished some timeago, and has now been to Martlesham for tests. Conse- quently, a description and illustrations may now bepublished. In the design of the machine, the monospar principlehas been applied not only to the wing, but also, in effect, to the fuselage. That Mr. Stieger's claims for low struc-ture weight are borne out seems to be indicated by the fact that the structure weight is a considerably lower per-centage than is usually found in a machine of this type and size. Originally, the machine was intended to befitted with two of the Redrup axial engines, but, as the experiments with these took longer than had been ex-pected, two 50-h.p. Salmson engines of the 9AD type were fitted instead, and with these the machine flies verywell indeed. It is not desired to give performance figures
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