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  5. Aerodynamic properties and characteristics of radar visibility of a model of the pilotless airplane with a transformable wing

Aerodynamic properties and characteristics of radar visibility of a model of the pilotless airplane with a transformable wing

Е.А. Ukrainets
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Results of experiment with models of the pilotless airplane with a transformable wing in the wind tunnel Т-1 of the Kharkov university of Air Forces and the echoless chamber of the Kharkov national university are presented. As a result of handling of experimental data relations of drag coefficient, lifting power, aerodynamic quality, the dispersion characteristic are received at various positions of a transformable wing. On the basis of the analysis of the received relations position versions of a transformable wing concerning a fuselage (optimum by criteria «the maximum lift-to-drag ratio», «the minimum drag», «the minimum radar visibility») are determined.
Keywords: a transformable wing, a wind tunnel, the echoless chamber, aerodynamic properties, characteristics of a radar visibility, modelling experiment, multi-purpose pilotless airplane