Faculty of Mechanical Engineering, Lj. (FSLJ)
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Vpliv velikih upogibnih deformacij na aerodinamičen vzgon eliptičnega letalskega krila : zaključna naloga Razvojno raziskovalnega programa I. stopnje StrojništvoGravnar, JakaNaloga obravnava spremembo usmeritve sile vzgona na upognjenem krilu, ki se jo med praktičnimi izračuni pogosto zanemari, saj se krilo večinoma obravnava v okviru majhnih deformacij. S to teorijo pa ... ni mogoče natančno izračunati upogiba in usmeritve sile vzgona na močno deformiranih krilih. Zato smo v nalogi izpeljali teorijo, ki temelji na nelinearnem Euler-Bernoullijevem modelu nosilca. Izpeljava je prikazana za močno upognjeno eliptično krilo, ki ima obliko in zato porazdelitev vzgona, značilno za jadralna letala. S programom za določevanje aerodinamičnih lastnosti krila XFLR5 smo preverili porazdelitev vzgona vzdolž celotnega krila, ki smo jo izračunali sami. Enačbe upogibne deformacije krila smo izračunali numerično in upoštevali, da obremenitev sledi deformaciji. Na podlagi kota zasuka v vsaki točki krila, smo tako dobili dejansko porazdelitev vzgona, ki jo imamo v realnosti. Napisali smo kodo, ki lahko pod pogoji naših predpostavk reši problem deformabilnosti krila za vsak tip letala. S tem programom lahko uporabnik sam izračuna in presodi, ali je pojav za obravnavano letalo v določenem manevru zanemarljiv ter tako upošteva našo teorijo za pridobitev bolj natančnih rezultatov.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [J. Gravnar], 2020Language - slovenianCOBISS.SI-ID - 21128195
Author
Gravnar, Jaka
Other authors
Brojan, Miha
Topics
diplomske naloge |
letalska krila |
upogib |
Euler-Bernoullijev nosilec |
nekonservativna obremenitev |
eliptična porazdelitev obremenitve |
thesis |
airplane wings |
bending |
Euler-Bernoulli beam |
nonconservative load |
elliptical load distribution
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Database name | Field | Year |
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Gravnar, Jaka | ![]() |
Brojan, Miha | 24560 |
Source: Personal bibliographies
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