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Aviation History
1914
1914 - 0616.PDF
BHH JUNE 12, 1914. THE SO H.P. AVRO SCOUT. THE subject of our scale drawings this week—the 80 h.p. Avro Scout—made its first public appearance at Hendon on May 23rd last, piloted by Mr. F. P. Raynham. This machine had, we understand, only been tested on two short flights previously, so that, in view of the fact that she presents such considerable departures from standard design, her performances were very good indeed. From Mr. A. V. Roe we learn that the machine was not quite mainly in the design and construction of the wings that innovations are to be found. Most noticeable among these is the way in which the main planes slope back wards so as to form a V as seen in plan. Only one pair of struts on each side separate the main planes, and these struts are cross-braced and covered in with fabric to; form a unit, thereby reducing head resistance to that of a single strut. The wing bracing has been reduced to an THE AVRO SCOUT.-Side view. so fast as he had expected, but this was probably partly due to the fact that the engine was not running particu larly well. As far as one was able to judge, the speed range was very considerable, and without knowing actual figures we should think that the maximum speed was over 90 m.p.h. The climbing capabilities also seemed very good indeed, Mr. Raynham taking the machine up at what looked like an alarmingly steep angle, but which was in reality probably about 300. Constructionally, this machine differs little, at least as regards the fuselage, from standard Avro practice. It is absolute minimum since only one pair of cables on each side provide the necessary rigidity. At their outer ends these cables are attached, by means of a steel clip, to a steel tube of two inches diameter, built into the wing and joining the two spars. Thus, for any position of the centre of pressure the lift is always taken by both spars through the intermediary of the steel tube. In section the wings are somewhat unusual in that they are perfectly flat on the under surface, whilst the top surface is cambered in the usual way. In addition to the backward slope of the wings, these are set at a very THE AVRO SCOUT.—Three-quarter view from the front. 616
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