- Tytuł:
- The effect of using the Kline-Fogleman modification upon the coefficient characteristics of aerodynamic forces in the airfoil
- Autorzy:
-
Szczepaniak, R.
Bąbel, R.
Grzywacz, A.
Stryczniewicz, W.
Kowaleczko, G. - Powiązania:
- https://bibliotekanauki.pl/articles/245705.pdf
- Data publikacji:
- 2018
- Wydawca:
- Instytut Techniczny Wojsk Lotniczych
- Tematy:
-
airfoil
CFD
aerodynamics characteristics
Kline-Fogleman modification
NACA0012 airfoil - Opis:
- The wing is the main aircraft construction element, whose main task is to produce the lift, balancing the aircraft weight as well as ensuring the execution of all flight states for which the aircraft was designed. The selection of appropriate airfoils or the development of new ones is one of the most important constructions goals. As a rule, constructors aim at ensuring a sufficiently large lift with little aerodynamic drag in order to increase the scope of utility angles of attack and such shaping of these characteristics so that the aircraft performance, close to the critical angles of attack, guarantees an adequate level of safety. One of the methods of improving the aerodynamic properties of airfoils is the Kline-Fogleman modification. It involves an application of a step into the airfoil contour at a place. It enforces the creation of a swirling air stream, preventing the separation and maintaining airflow over the profile and thus the reduction of drags, as well as delaying separation. The use of this type of a solution is justified when designing unmanned aerial vehicles, of small sizes, which move with slow speeds and sometimes-large angles of attack, including those close to critical angels of attack. The Kline-Fogleman modification decreases the likelihood of aircraft stalling. The aim of this work is to present an analysis of airflow over NACA0012 airfoil with Kline-Fogleman modification. The calculations were made by solving the problem of numerical fluid mechanics. For calculations, the Comsol Maribor programme was used. The investigation focused on several different airfoil modifications (KFm-1, KFm-2, KFm-3). This enabled a selection of a solution, providing the most desirable aerodynamic characteristics.
- Źródło:
-
Journal of KONES; 2018, 25, 2; 349-356
1231-4005
2354-0133 - Pojawia się w:
- Journal of KONES
- Dostawca treści:
- Biblioteka Nauki
Artykuł