Drag and Flutter Characteristics of Loop Membranes

Autor:	Anna C. Carruthers, Antonio Filippone
Rok vydání:	2007
Předmět:	Physics Drag coefficient Terminal velocity business.industry Aerospace Engineering Reynolds number Structural engineering Aerodynamics Mechanics symbols.namesake Parasitic drag Drag symbols Flutter Zero-lift drag coefficient business
Zdroj:	Journal of Aircraft. 44:317-322
ISSN:	1533-3868 0021-8669
DOI:	10.2514/1.23679
Popis:	The loops were tested for a variety of aspect ratios, from 3.3 to 30,three planform areas, and twomounting methods. Results are presented for the drag coefficient and for the flutter characteristics. We prove that with a low aspect ratio the loops form a teardrop shape andtheir flutter modeisasinusoidal-like oscillation.Furthermore,the dragcoefficientdecreaseswiththeincreasing wind speed, but it depends strongly on the aspect ratio and the planform area. Empirical correlations for the drag coefficient are polynomial equations. Nomenclature A = planform area, m 2 CD = drag coefficient based on the planform area (single side area) c1, c2 = coefficients in Eq. (1) Re = Reynolds number based on loop length U = freestream velocity, m=s � = loop thickness, mm
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a40e0392f062f6f6c499ddf688de4513 https://doi.org/10.2514/1.23679 Zobrazit plný text záznamu