magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
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.
Keywords
magistrske naloge;aerodinamične sile;krilo;vitkost;vetrovniki;Prandtlova teorija vzgonske linije;inducirani upor;laser Dopplerjeva anemometrija;
Data
Language: |
Slovenian |
Year of publishing: |
2022 |
Typology: |
2.09 - Master's Thesis |
Organization: |
UL FS - Faculty of Mechanical Engineering |
Publisher: |
[N. Kambič] |
UDC: |
629.7:533.692(043.2) |
COBISS: |
137878019
|
Views: |
434 |
Downloads: |
120 |
Average score: |
0 (0 votes) |
Metadata: |
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Other data
Secondary language: |
English |
Secondary title: |
Experimental characterisation of aerodynamic properties of wing with low aspect ratio |
Secondary 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. |
Secondary keywords: |
master thesis;aerodynamic forces;wing;aspect ratio;wind tunnel;induced drag; |
Type (COBISS): |
Master's thesis/paper |
Study programme: |
0 |
Embargo end date (OpenAIRE): |
1970-01-01 |
Thesis comment: |
Univ. Ljubljana, Fak. za strojništvo |
Pages: |
XXIV, 54 str. |
ID: |
16888970 |