Abstract
Numerical simulations are performed to study the outboard airfoil of advanced technology regional aircraft (ATRA) wings with five different variable camber continuous trailing edge flap (VCCTEF) configurations. The computational study aims to improve the aerodynamic efficiency of the airfoil under cruise conditions. The design of outboard airfoil complies with the hybrid laminar flow control design criteria. This work is unique in terms of analysis of the effects of VCCTEF on the ATRA wing’s outboard airfoil during the off-design condition. The Reynolds–Averaged Navier–Stokes equations coupled with the Spalart-Allmaras turbulence model are employed to perform the simulations for the baseline case and VCCTEF configurations. The current computational study is performed at an altitude of 10 km with a cruise Mach number of 0.77 and a Reynolds number of 2.16 × 107. Amongst all five configurations of VCCTEF airfoils studied, a flap having a parabolic profile (VCCTEF 123) configuration shows the maximum airfoil efficiency and resulted in an increase of 6.3% as compared to the baseline airfoil.
Highlights
The future growth of the aircraft industry depends on various environmental factors, such as air and noise pollution [1]
A reduction in the especially theeffective local skin friction flow drag reduction in the range of 5–30% is of considerable importance, but it is not as effective as laminar reduction in the range of 5–30% is of considerable importance, but it is not as effective as laminar flow control (LFC), which results in 50–80% reduction in skin friction drag
The LFC by suction flow control (LFC), which results in 50–80% reduction in skin friction drag
Summary
The future growth of the aircraft industry depends on various environmental factors, such as air and noise pollution [1]. The fuel consumption of an aircraft is strongly dependent on its airfoil efficiency measured in terms of lift to drag (L/D) ratio. Increasing this efficiency is one of the methods for decreasing fuel consumption, thereby reducing harmful emissions [1]. This estimate implies that “research, testing project design” contributes 2% This study strives to increase the efficiency of airfoil
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