Amphibious aircraft is a multi-function aircraft which can be operated on land and water. This type of aircraft helps transportation sector due to its ability to reach remote areas. Indonesia as the largest archipelago in the world has problems in connecting remote areas. Land transportations and conventional aircraft have difficulties to reach remote areas due to lack of facility. Hence, small aircraft capable of operating on land or water with take off and landing distance less than 1000 m are required. This study conducted take off simulation and analysis for DHC-6 Twin Otter Series 400 equipped with twin float. It tries to propose a simpler method to initiate the analysis of take of performance for float planes with limited data constraints. Several programs were used to generate required data, such as DatCom and SolidWorks. Float plane take-off simulation used in this research utilized Gudmundsson’s method. Results showed that the method is suitable and correctly produce take off distance and time similar to those of the real aircraft. Aircraft weight and thrust affect take-off distance and required time, as well as hydrodynamic forces produced. Reduction of weight 10% reduces the distance approximately 17%, while 10% thrust reduction increases take off distance about 15%. In the future this research will be expanded to include other float shapes and sizes, as well as flying boats.

水陆两用飞机是一种可以在陆地和水上操作的多功能飞机。由于这种类型的飞机能够到达偏远地区，因此有助于运输部门。印度尼西亚作为世界上最大的群岛，在连接偏远地区方面存在问题。由于缺乏设施，陆路交通和常规飞机难以到达偏远地区。因此，需要能够在陆地或水上运行且起降距离小于 1000 m 的小型飞机。本研究对配备双浮筒的 DHC-6 Twin Otter 系列 400 进行起飞模拟和分析。它试图提出一种更简单的方法来启动对具有有限数据约束的浮动飞机的性能分析。使用了几个程序来生成所需的数据，例如 DatCom 和 SolidWorks。本研究中使用的浮动飞机起飞模拟使用了 Gudmundsson 的方法。结果表明，该方法是合适的，可以正确地产生与真实飞机相似的起飞距离和时间。飞机重量和推力会影响起飞距离和所需时间，以及产生的水动力。重量减少 10%，距离减少约 17%，而推力减少 10%，起飞距离增加约 15%。将来，这项研究将扩大到包括其他形状和尺寸的漂浮物，以及飞艇。以及产生的水动力。重量减少 10%，距离减少约 17%，而推力减少 10%，起飞距离增加约 15%。将来，这项研究将扩大到包括其他形状和尺寸的漂浮物，以及飞艇。以及产生的水动力。重量减少 10%，距离减少约 17%，而推力减少 10%，起飞距离增加约 15%。将来，这项研究将扩大到包括其他形状和尺寸的漂浮物，以及飞艇。