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Aviation History
1928
1928 - 0172.PDF
MARCH 8, 1928 THE AVRO "AVIAN III A.D.C. " Cirrus II " Engine »* THE first Avro " Avian " was, it may be recollected, designed and built for the Daily Mail competition held at Lympne in 1926, and was then fitted with the new Armstrong-Siddeley Genet " engine. Outstanding features of the prototype were : Very low structure weight, wings of large area, and exceptional ratio of loaded weight to tare weight. Thus the " Cirrus " engine. The latest model differs considerably from the prototype, and among other changes may be men- tioned the decrease in wing area, the large area of the 1926 machine being used in order to enable the machine to carry a large useful load and thus score heavily for competition purposes. Incidentally, it is the original machine which THE AVRO " AVIAN III Three-quarter front view. tare weight of the competition machine was 695 lb., and the loaded weight 1,600 )b., the load being made up of 77 lb. of petrol and oil, and 828 lb. of useful load (including pilot). A detailed illustrated description of the original " Avian was published in FLIGHT of August 26, 1926. Since 1926, the " Avian " has been put into production, and the type which we are about to describe is known as the " Avian "" Mark III, which is fitted with the Mark II A.D.C ["PLIGHT " Photograph Note the neat engine cowling and " clean " nose. Hinkler used on his recent magnificent flight to Australia in 15^ days. The wings, however, are of much smaller area than those used in the competition. The production type " Avian " has been strengthened a good deal so as to enable it to withstand the varied handling which it may receive from beginners in flying, and when used for school work. The lines have been improved considerably, and the machine now has a remarkably " clean " appearance, THE AVRO "AVIAN III": Three-quarter rear view. 152 [•• FLIGHT " Photograph
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