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The use of aerofoil data is best exploited via the numerous affordable computer programs now available to predict model performance. This publication is aimed at the understanding and appraisal of aerofoil data rather than the calculation of performance prediction. The author has approached the subject from the specialist area of radio controlled thermal soarers, but, once understood, the concepts explained here will prove equally useful to those who want to progress the design of other model aircraft classes; formulae in the appendices will assist in relating aerofoil data to a range of powered and gliding aircraft manoeuvres. Much of the content can also be applied to the design of model yacht keels. The results of research into model aircraft turbulators have been incorporated. This enables aerofoils suitable for turbulation to be identified, and enables good turbulator configurations to be designed for a range of operating conditions. The explanations have been pitched for readers who have acquired the skill to control or trim model aircraft to fly close to their minimum speed. The subject is presented in a logical learning sequence that takes the reader well into the concepts employed by aerofoil designers to deliver the performances realised by their aerofoils. Alternatively, a glossary listing enables readers to access directly any of a wide range of aerofoil topics. |
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The Modellers World Series - from
www.traplet.com |
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