Effect of paragliding wing dome shape on its aerodynamic characteristics
نویسندگان
چکیده
Double-membrane gliding parachutes (DGP) obtain their wide variety of application, including the solution cargo transportation problems. This parachute is a flexible canopy, which shape maintained by ram air. In terms aerodynamic performance calculation and analysis when operating, DGP most complex aero elastic system. The computation DPG only possible, utilizing methods nonlinear aerodynamics theory elasticity methods. paper investigates characteristics stable geometric shapes for various parachutes, taking into account dome both chord-wise span-wise. Notably, volumetric profile modeled its median surface. research, conducted authors, showed that such an model allows you to results reflect correctly qualitative effects detached free streamline flow. To solve problem about airflow over parachute, considering canopy curvature, method discrete vortices with closed frames employed, calculate paragliding wing within range angles attack. There also possibility flow separation simulation. ideal incompressible liquid surface double-membrane regarded. fabric porosity not analyzed, since upper lower panels are made either low permeable or non-porous fabric. separated past, coefficients identified time averaging large values after computing. given at different value shape, as in separation. computed coefficients, allow us consider influence on characteristics, obtained. proposed technique can be used operational estimates forces while designing planning pipe experiment.
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ژورنال
عنوان ژورنال: ??????? ??????? ???? ??
سال: 2021
ISSN: ['2079-0619', '2542-0119']
DOI: https://doi.org/10.26467/2079-0619-2021-24-6-54-65