STUDI KOMPARASI KARAKTERISTIK AERODINAMIKA PADA AIRFOIL NACA 4412 DAN NACA 24112 TERHADAP FENOMENA GROUND EFFECT PADA SUDUT SERANG RENDAH

SUPRIYADI, DODYY (2022) STUDI KOMPARASI KARAKTERISTIK AERODINAMIKA PADA AIRFOIL NACA 4412 DAN NACA 24112 TERHADAP FENOMENA GROUND EFFECT PADA SUDUT SERANG RENDAH. Skripsi thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

Air transportation experiences rapid development in line with the advanced development of technology and aerospace. WIG (wing in ground) craft is a wing installation construction that is close to the ground. This will cause a ground effect phenomenon which moisturizes the additional pressure under the airfoil. The purpose of this study was to investigate airfoils on WIG craft on the aerodynamic characteristics by carrying out a comparative study on the airfoils of NACA 4412 and NACA 24112 to determine the different aerodynamic characteristics on the phenomenon of ground effect and the influence of the ground effect on air pressure and speed. The effects on the coefficient of lifting force (CL) and the coefficient of inhibition force (CD) with angles of attack (AoA) 0° and 3 and a certain variation in height were investigated using NACA 4412 and NACA 24112 airfoils. The parameters used were height of 0.1c; 0.3c; 0.5c; 0.7c; 1.0c; Unbound, and angle of attack (AoA) airfoils 0° and 3. From the test results°, it was found that the values of the coefficient of lifting force (CL) and the value of the coefficient of inhibition force (CD) in NACA 24112 tended to be better than NACA 4412 assuming the same height and angle of attack variation. At the angle of attack (AoA) airfoil 0° NACA 24112 had a CL value of 73% and a CD value of 20% better compared to NACA 4412 airfoils. At an angle of attack (AoA) airfoil 3° had a CL value of 38% and CD value of 9% better compared to NACA 4412 airfoils. The NACA 24112 had better aerodynamic characteristics for WIG. This research is expected to be useful for consideration in the design of the WIG aircraft.

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