LONGITUDINAL FLIGHT DYNAMICS AND FLIGHT CONTROL DESIGN ANALYSIS FOR AMPHIBIOUS COMMUTER AIRCRAFT

• Main Author: Tresnoningrum, Deasy
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/48344
• Institution: Institut Teknologi Bandung

The commuter aircraft development program held by LAPAN and Indonesian Aerospace is going through the certification phase. This aircraft is one of the main program that support national transportation. The development of this commuter aircraft with amphibious configuration that can operate both on hard surface and in the water is expected to be a solution to the transportation limitation especially in remote areas that are difficult to reach by land transportation facilities. This thesis performs dynamic modelling of commuter aircraft for both configurations based on equations of motion for longitudinal modes. The aerodynamic characteristics data were obtained using USAF Digital DATCOM software. The aircraft non-linear dynamic modelling is built using MATLAB/Simulink software, and the linearization process uses numerical analysis on Simulink. Modelling for each configuration is designed at four operational speeds namely 200 km/h, 266 km/h, 300 km/h, and 350 km/h. Aircraft control system can be designed using linear model approach because aircraft dynamics is a Linear Time-Invariant system. With the addition of amphibious feature, it is possible to change the configuration of basic commuter aircraft including changing the aircraft’s flight control system. The results obtained from this analysis indicate that the flight control system on basic aircraft cannot be used on amphibious aircraft because it shows unstable results in flight stability of the amphibious aircraft. Amphibious flight control systems must be built separately from the basic flight control systems.