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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Analýza aerodynamické optimalizační funkce, řízení a zviditelnění proudění na profilech s jednoduchou klapkou pro aplikace na větroních třídy FAI 18m
 Popelka, Lukáš ; Krejčiřík, P. ; Matějka, Milan ; Jensen, R.
Aerodynamic criteria for assessing the performance of flapped airfoils applicable on wings of FAI 18m sailplanes were established by a questionnaire survey. CFD methods were used to calculate values of the criteria. Procedure of target function evaluation, enabling to take into account optimum flap deflection was developed and used for five different airfoils, typical for contemporary top-performance sailplanes. Possibility of drag coefficient reduction by transition control on the lower surface, while flap setting for circling, was studied. Surface flow visualization and integrating rake pressure measurement for optimum transition control was carried out on a high-performance sailplane HPH304S.
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