Calculation accuracy of wing aerodynamic parameters for a low speed aircraft
The article presents the analysis results of calculation error for a swept wing of NACA4415 airfoil. Coefficients of aerodynamic forces for this wing were calculated by means of a vortex step method including special algorithm to account non-linear characteristics of an airfoil. Calculation error of...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Vilnius Gediminas Technical University
2012-08-01
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| Series: | Geodesy and Cartography |
| Subjects: | |
| Online Access: | https://btp.vgtu.lt/index.php/GAC/article/view/10979 |
| _version_ | 1818874435582558208 |
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| author | Egidijus Pakalnis Jonas Stankūnas |
| author_facet | Egidijus Pakalnis Jonas Stankūnas |
| author_sort | Egidijus Pakalnis |
| collection | DOAJ |
| description | The article presents the analysis results of calculation error for a swept wing of NACA4415 airfoil. Coefficients of aerodynamic forces for this wing were calculated by means of a vortex step method including special algorithm to account non-linear characteristics of an airfoil. Calculation error of aerodynamic coefficient is determined by means of equation (1) for the lift force coefficient and equation (4) for the drag force coefficient of a separate element of wing model. Equations (3) and (6) are used to determine calculation errors of lift and drag force coefficients of the complete wing. Error dependence on an angle of attack of the wing and a sweep angle of the wing are presented in several graphs.
Article in Lithuanian
Mažų greičių lėktuvo sparno aerodinaminių parametrų skaičiavimo tikslumas
Santrauka. Pateikiami strėlinio NACA4415 profilio sparno skaičiavimo paklaidų analizės rezultatai. Šio sparno aerodinaminiai koeficientai buvo apskaičiuoti taikant sūkurio žingsnio metodą, papildytą specialiu algoritmu netiesinėms profilio charakteristikoms įvertinti. Kiekvieno sparno modelio elemento aerodinaminių koeficientų skaičiavimo paklaidos buvo nustatytos pagal (1) formulę keliamajai jėgai ir (2) formulę pasipriešinimo jėgai rasti. Viso sparno aerodinaminių jėgų koeficientų skaičiavimo paklaidos apskaičiuotos pagal (3) ir (4) formules. Grafiškai pateikiama paklaidų priklausomybė nuo sparno atakos ir strėliškumo kampo.
Raktažodžiai: aerodinaminiai koeficientai, skaičiavimo paklaidos. |
| first_indexed | 2024-12-19T13:10:33Z |
| format | Article |
| id | doaj.art-a2d08deb7ce9428fa4a72da9c7153e19 |
| institution | Directory Open Access Journal |
| issn | 2029-6991 2029-7009 |
| language | English |
| last_indexed | 2024-12-19T13:10:33Z |
| publishDate | 2012-08-01 |
| publisher | Vilnius Gediminas Technical University |
| record_format | Article |
| series | Geodesy and Cartography |
| spelling | doaj.art-a2d08deb7ce9428fa4a72da9c7153e192022-12-21T20:19:56ZengVilnius Gediminas Technical UniversityGeodesy and Cartography2029-69912029-70092012-08-0131210.3846/13921541.2005.9636669Calculation accuracy of wing aerodynamic parameters for a low speed aircraftEgidijus Pakalnis0Jonas Stankūnas1Antano Gustaičio aviacijos institutas, Vilniaus Gedimino technikos universitetas, Rodūnios kelias 30, LT-02187 Vilnius-38, LietuvaAntano Gustaičio aviacijos institutas, Vilniaus Gedimino technikos universitetas, Rodūnios kelias 30, LT-02187 Vilnius-38, LietuvaThe article presents the analysis results of calculation error for a swept wing of NACA4415 airfoil. Coefficients of aerodynamic forces for this wing were calculated by means of a vortex step method including special algorithm to account non-linear characteristics of an airfoil. Calculation error of aerodynamic coefficient is determined by means of equation (1) for the lift force coefficient and equation (4) for the drag force coefficient of a separate element of wing model. Equations (3) and (6) are used to determine calculation errors of lift and drag force coefficients of the complete wing. Error dependence on an angle of attack of the wing and a sweep angle of the wing are presented in several graphs. Article in Lithuanian Mažų greičių lėktuvo sparno aerodinaminių parametrų skaičiavimo tikslumas Santrauka. Pateikiami strėlinio NACA4415 profilio sparno skaičiavimo paklaidų analizės rezultatai. Šio sparno aerodinaminiai koeficientai buvo apskaičiuoti taikant sūkurio žingsnio metodą, papildytą specialiu algoritmu netiesinėms profilio charakteristikoms įvertinti. Kiekvieno sparno modelio elemento aerodinaminių koeficientų skaičiavimo paklaidos buvo nustatytos pagal (1) formulę keliamajai jėgai ir (2) formulę pasipriešinimo jėgai rasti. Viso sparno aerodinaminių jėgų koeficientų skaičiavimo paklaidos apskaičiuotos pagal (3) ir (4) formules. Grafiškai pateikiama paklaidų priklausomybė nuo sparno atakos ir strėliškumo kampo. Raktažodžiai: aerodinaminiai koeficientai, skaičiavimo paklaidos.https://btp.vgtu.lt/index.php/GAC/article/view/10979aerodynamic coefficientscalculation errors |
| spellingShingle | Egidijus Pakalnis Jonas Stankūnas Calculation accuracy of wing aerodynamic parameters for a low speed aircraft Geodesy and Cartography aerodynamic coefficients calculation errors |
| title | Calculation accuracy of wing aerodynamic parameters for a low speed aircraft |
| title_full | Calculation accuracy of wing aerodynamic parameters for a low speed aircraft |
| title_fullStr | Calculation accuracy of wing aerodynamic parameters for a low speed aircraft |
| title_full_unstemmed | Calculation accuracy of wing aerodynamic parameters for a low speed aircraft |
| title_short | Calculation accuracy of wing aerodynamic parameters for a low speed aircraft |
| title_sort | calculation accuracy of wing aerodynamic parameters for a low speed aircraft |
| topic | aerodynamic coefficients calculation errors |
| url | https://btp.vgtu.lt/index.php/GAC/article/view/10979 |
| work_keys_str_mv | AT egidijuspakalnis calculationaccuracyofwingaerodynamicparametersforalowspeedaircraft AT jonasstankunas calculationaccuracyofwingaerodynamicparametersforalowspeedaircraft |