Wind Tunnel Experiments to Assess the Effect of Back-Mounted Radio Transmitters on Bird Body Drag

摘要: To whom reprint requests should be addressed. The aerodynamic drag of bird bodies was measured in a wind tunnel, with and without back-mounted dummy radio transmitters. Flight performance estimates indicate that the large transmitter can cause substantial reduction migrant9s range, is, distance it cover non-stop flight. reduced by arranging components an elongated shape, so minimizing frontal area. addition rounded fairing to front end, pointed behind, found reduce about onethird, as compared unfaired rectangular box.