The Analysis of Unconventional Aircraft Flight Dynamics Model by Linearizing its Equation of Motion as Applied in BPPT's V-Tail Configuration UAV 'Gagak'

摘要

The flight dynamics of aircraft were derived from Newton's Law of Mechanics and Euler's Equation of Moment in kinematics. These nonlinear equations were relatively complex to be solved analytically. In the other hand, they were also costing high computational load to be solved in conventional numerical method. Due to the practical need to analyze the aircraft flight dynamics, some simplified method has emerged in solving the equations with tolerable margin of errors. Most of these simplified methods were developed earlier in conventional aircraft configuration, which consist of fuselage (body), wing, and clearly defined vertical tail and horizontal tail. Recently, the BPPT (The Agency of The Assessment and The Application of Technology, Indonesia) has prototyping several type of UAV. The development was including the unconventional configuration, such as the V-Tail UAV type named BPPT-01B "Gagak" ("Crow" in English). The V-tail configuration was built to increase the agility of the UAV maneuver and reducing the drag compared to the conventional T-tail. Thus, the need of assessing the accuracy of linearized model occurred to justify its implementation on this unconventional--the V-tail--configuration. This work will perform the investigation of the accuracy of linearized model compared to a more exact numerical solution due to its implementation in unconventional, V-tail configuration. Simulation produced comparative results which conclude that the unconventional V-tail configuration weren't decreasing the accuracy of the linearized equation compared to complete equation of motion. Thus the linearized model was suitable for the V-tail configuration analysis of its Flight Dynamics.