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Aviation History
1948
1948 - 0195.PDF
FEBRUARY I2TH, I94S Four-Blade Airscrew : Cartridge Starter: Good Low-Speed Characteristics By WING-CDR. MAURICE A. SMITH, D.F.C. WHEN one is trying to assess the merits or otherwiseof an aircraft, it is natural to compare it in one'smind with others of the same general size and shape. Among the light types it is most important, however, to 'have in mind the purpose for which the machine was designed, and the market ... . . . in which it is to be offered ; this is often difficult, but without it an unfair impression is likely to be gained. Thus a machine intended primarily for train- ing must not be compared too closely with a private tourer on comfort, appearance or equipment scores, nor, without allowances being made, must ta fabric-covered, two-seater designedwith simplicity and low cost in mind "be contrasted with an all-metal machine of similar layout but costing £1,000 more. When assessing the qualities of a motor car, most people are naturally "class conscious" and make allowance for cost price. This is not always so with aircraft. Last week the construction of the Fairey Primary Trainer, designed for simple and economical construction, was described in some detail. My in- tention now is to add an appraisal The two cockpits of the Primary Trainer are almost identical, and, as may be seen from the special " Flight " drawing of the rear cockpit, they are simply but ade-uately equipped. On future models the horizontal elevator trimmer quadrant and lever will be replaced by a wheel on the port side, and the layout of flying instruments will conform with the standard R.A.F. blind-flying panel arrangement Tie seat adjustment fever is also to be improved. from a pilot's point of view. There are also several im- provements to be mentioned which the Fairey company intend to incorporate following recent discussions.
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