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A08 - Analysis of the stability and controllability for the 50m KARI unmanned airship

The purpose of this paper is to analyze the dynamic stability and the controllability of the unmanned airship under development ; the KARI unmanned airship's over-all length of hull is 50m and the maximum diameter is 12.5m. For the analysis, the dynamic model of an airship was defined and aerodynamic derivatives were extracted from the wind tunnel test. The analysis results shows the efficiency of the control inputs such as control surfaces, thrust, tilting angle and differential thrust of motor at the low and high speed regime and the
effects of stability contribution in several conditions. All of the results, airship models and dynamic flight equations will be a important basement and basic information for the next step of developing the Automatic Flight Control System(AFCS) in the unmanned airship.

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