Paragliders' Launch Trajectory is Universal
Résumé
We design, build and run a reduced-scale model experiment to study the paragliding inflation and launching phase at given traction force. We show that the launch trajectory of the glider is universal, that is, independent of the strength of the exerted force. As a consequence, the length of the takeoff run required for the glider to reach its "ready to launch" vertical position is also universal. We successfully confront our results to real scale experiments, and show that such universality can be understood through a simple theoretical model.
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