PROBLEMS AND POSSIBILITIES OF MEASURING THE AERODYNAMIC QUALITY OF A PARAGLIDER WING 

Yuri V. Shved, Candidate of technical sciences, senior lecturer of the sub-department of design and certification of aviation equipment, Moscow Aviation Institute (4 Volokolamskoe highway, Moscow, Russia), yuriy-shved@mail.ru

Background. The article describes the problems of measuring the aerodynamic quality of the wing of a paraglider, measuring the aerodynamic quality of systems with a soft wing on a sling suspension. A comparison of the tested methods of measurement and their results is given. It is shown that the method of simultaneous measurement of air speed and the rate of change of barometric altitude does not allow to evaluate the aerodynamic qualities. Materials and methods. A method of separate measurement of the aerodynamic quality of a soft wing and the load suspended on it by installing angular position sensors to an additional link (links) between the carabiner of ground equipment and the free ends of the wing is proposed. Results and conclusions. It is substantiated that the installation of angular position sensors on the connecting links can be useful for unmanned and optionally controlled soft-wing systems, as it allows for the control of the wing during takeoff and sharp evolutions, which enables active flight stabilization. The accuracy and informativeness of the proposed method have been evaluated.

paraglider, gliding parachute, soft wing, wing aerodynamic quality

Shved Yu.V. Problems and possibilities of measuring the aerodynamic quality of a paraglider wing. Nadezhnost' i kachestvo slozhnykh sistem = Reliability and quality of complex systems. 2025;(3):26–35. (In Russ.). doi: 10.21685/2307-4205-2025-3-3