ANALISIS BEBAN STRUKTUR LANDING GEAR PADA PESAWAT GROB G120TP-A

BIMO SANTOSO, MUHAMMAD (2022) ANALISIS BEBAN STRUKTUR LANDING GEAR PADA PESAWAT GROB G120TP-A. Skripsi thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

Landing gear is one of the important components in the structure of the aircraft and serves to withstand the weight of the aircraft while on the ground and different landing characteristics according to the characteristics of the aircraft. The Grob G120TP-A aircraft used "Retractable Tricycle Landing Gear" type with 1 nose landing gear and 2 main landing gears. With the tricycle shape, the aircraft is expected to be more stable on the ground and able to absorb landing loads and strong ground handling. To investigate the strength limit of the landing gear structure, a structural analysis must be carried out. In the landing gear load analysis, several things were carried out such as selecting the c.g position on the aircraft, analyzing the landing gear weight determination, and analyzing the dynamics of the landing gear using data collection methods, library methods, and interview methods. The c.g position of the plane for the XT coordinates was 3.57 m and the YT coordinate was 1.48 m. The distance between c.g to the landing edge along the MAC (XTO) was 0.09 m. The vertical distance c.g with MAC (YTO) was 1.08 m. for positioning c.g in percent MAC XTO was 6.48% MAC and YTO was 77.81 % MAC with Hc.g was 1.36 m. While HNLG was 0.23 m and HMLG was 1.30 m. The results of the analysis of loading on the landing gear in static and dynamic conditions were: Pmmax 7123.71 N, Pnmax 4484.83 N, Pnmin 988.45 N, Pndyn 7635.04 N, and Pmdyn 11239.38 N. The results of the aircraft load dynamics analysis when it was landing was 1440 kg, as a result the kinetic energy that the plane immersed when touchdown was 1834.86 joules, Pdyntire 12390.78 N, Sn -44.75 m, Sm -41.59 m.

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