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Statični aerolastični odziv eliptičnih letalskih kril na torzijske in upogibne obremenitve
ID Gravnar, Jaka (Author), ID Brojan, Miha (Mentor) More about this mentor... This link opens in a new window

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Abstract
V delu je predstavljen razvoj numeričnega orodja za preračun statičnih aerolastičnih odzivov eliptičnih letalskih kril. Klasične računske metode strukturne in aerodinamične obremenitve obravnavajo ločeno, moderni postopki pa se poslužujejo FEM ter CFD analiz, kar izjemno podaljša računske čase. Naš program predstavlja rešitev, ki lahko izjemno hitro poda dober približek realnega obremenitvenega stanja letalskega krila. Teorija temelji na EulerBernoullijevem modelu nosilca, ter nelinearnem modelu torzijskih zasukov eliptične lupine s spremenljivim prerezom in obremenitvijo. Za izračun potrebujemo polare aeroprofilov pridobljene iz simulacij ali meritev. Numerični model je zasnovan v okolju Wolfram Mathematica, validacija rezultatov pa je narejena v programu Ansys. Rezultati pokažejo močan vpliv torzijskih zasukov na porazdelitev vzgona pri velikih hitrostih, vpliv aerolastičnih efektov pa je manjši, a nezanemarljiv.

Language:Slovenian
Keywords:aerolastičnost, letalsko krilo, eliptična porazdelitev obremenitve, nelinearna torzija, upogib krila
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Year:2025
Number of pages:XX, 66 str.
PID:20.500.12556/RUL-168817 This link opens in a new window
UDC:533.6.04:539.384:629.7:004.41(043.2)
COBISS.SI-ID:235208451 This link opens in a new window
Publication date in RUL:26.04.2025
Views:301
Downloads:68
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Secondary language

Language:English
Title:Static aerolastic response of elliptic wings to torsional and bending loads
Abstract:
This thesis presents the development of a numerical software for calculating static aerolastic responses of elliptical airplane wings. Classic computational methods treat structural and aerodynamic loads independently, while modern approaches utilize FEM and CFD analyses, which are significantly slower. Our code offers a solution that quickly provides a good approximation of the real-world loading conditions on the airplane wing. The theory is based on the Euler-Bernoulli beam model, and the nonlinear model of torsional twists of elliptical shell with a variable cross-section and load. The program requires polars of airfoils obtained from either simulations or tests. Numerical model was developed in Wolfram Mathematica, the results were verified using Ansys. Analysis shows a strong impact of torsional twists on the lift distribution at high speeds, while the impact of aerolastic effects is smaller, though non-negligible.

Keywords:aerolasticity, airplane wing, elliptical load distribution, nonlinear torsion, wing bending

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