Abstract
LSU-05NG is a drone manufactured and developed by LAPAN. The horizontal tail of the aircraft is used to maintain longitudinal stability, however, there has been no study on a tail modification that could improve the performance. The study of tail modification will examine the impact of modifying the airfoil to NACA 2412 and NACA 63-215. The base model of LSU-05NG uses NACA 0012 as the airfoil profile which is used in the horizontal tail. The performance is measured from the value of the lift coefficient, drag coefficient, and longitudinal stability. The results are obtained using ANSYS CFX Software. Based on the study, the modification of the horizontal tail has no impact on the lift and drag coefficient, however, impacts greatly on the pitching coefficient which determines the longitudinal stability. The airfoil profile that produces the highest longitudinal stability is NACA 63-215, followed by NACA 2412, and the last is the basic model using NACA 0012
Highlights
Indonesia is a developing country, especially in its technology
The main purpose of this study is to examine the effects of how the horizontal tail airfoil profile is affecting plane performances
Based on the data gathered from the simulation, the modification of the airfoil profile on the horizontal tail of the LSU-05NG drone affects the Cm value or pitching moment coefficient, while the Cl value or lift coefficient and Cd value or drag coefficient are not too affected
Summary
One of the institutions that move to advance the development of technology in Indonesia is LAPAN (Lembaga Penerbangan dan Antariksa Nasional), this institution is engaged in the field of space such as Indonesian-made satellites, and aviation such as drones and aircraft made in Indonesia. LSU-05NG drone has the same parts as an airplane in general, this includes the fuselage, wing, and tail of the aircraft. The horizontal tail has the main function of providing longitudinal stability to the plane. The airfoil on the horizontal tail on LSU-05NG drone uses type NACA 0012 which is a symmetrical airfoil. There is still a lot of different airfoil type that can be used on the tail of the drone so it can produce higher performance, especially the longitudinal stability of the drone [3]. Longitudinal Stability is the moment force of the aircraft during the pitching motion [4-6]
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