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Eksperimentalna karakterizacija aerodinamičnih lastnosti kril z nizko vitkostjo
ID Kambič, Nejla (Author), ID Bobovnik, Gregor (Mentor) More about this mentor... This link opens in a new window, ID Kutin, Jože (Co-mentor)

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Abstract
Aerodinamične lastnosti aerodinamičnih profilov nam orišejo njihove najpomembnejše karakteristike, zanemarijo pa vpliv končne dolžine krila. Dolžina in majhna vitkost krila v veliki meri vplivata na zračni tok okrog krila. S ciljem določiti vpliv vitkosti krila na njegove aerodinamične lastnosti smo v okviru zaključnega dela skonstruirali in izdelali nosilni mehanizem za krilo, ki omogoča nastavljanje vpadnega kota le-tega. Izvedli smo meritve hitrostnega polja v merilni sekciji vetrovnika in meritve aerodinamičnih sil, ki delujejo na krilo majhne vitkosti. Pridobljeni rezultati kažejo, da se tokovni pojavi ob krilu skladajo s teoretičnimi napovedmi, vendar merilna sekcija oz. velikost modela krila ni primerna za eksplicitno primerjavo dobljenih vrednosti z vrednostmi v literaturi.

Language:Slovenian
Keywords:aerodinamične sile, krilo, vitkost, vetrovnik, Prandtlova teorija vzgonske linije, inducirani upor, hitrostno polje, laser Dopplerjeva anemometrija
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Place of publishing:Ljubljana
Publisher:[N. Kambič]
Year:2022
Number of pages:XXIV, 54 str.
PID:20.500.12556/RUL-142238 This link opens in a new window
UDC:629.7:533.692(043.2)
COBISS.SI-ID:137878019 This link opens in a new window
Publication date in RUL:27.10.2022
Views:745
Downloads:138
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Secondary language

Language:English
Title:Experimental characterisation of aerodynamic properties of wing with low aspect ratio
Abstract:
Aerodynamic characteristics of airfoils outline their most important properties but disregard the effect of wing length. Wing length and small aspect ratio affect airflow around the wing. With the goal of determining this effect on the aerodynamic properties of the wing, we designed and constructed a mechanism that enabled us to set the wing's angle of attack. We measured the velocity field in the wind tunnel test section and aerodynamic forces on a small aspect ratio wing. The results confirm theoretical predictions of airflow behaviour around the wing, however, the test section or the wing model size are not suitable for direct comparison of measured values with values we find in literature.

Keywords:aerodynamic forces, wing, aspect ratio, wind tunnel, Prandtl lifting line theory, induced drag, velocity field, laser Doppler anemometry

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