Demand analysis of wave resistance for large amphibious aircraft

China's maritime territory is vast, and with the increase of Marine activities, the demand for rescue operations in the medium to long-range sea is urgent. The existing rescue system, primarily based on helicopters and ships, has limitations such as short mission range and long response times. Large amphibious aircraft, with its long range, high speed and ability of taking off and landing on the water surface, can conduct fast and effective rescue in medium and long-range sea areas, and is the key aviation equipment for building water rescue force. Among the factors that affect the attendance rate and efficiency of rescue mission, the ability to resist waves is one of the key factors. By studying the requirements of large amphibious aircraft on water rescue mission mode, based on the sea state data of the target sea area of the rescue mission, a process and method of wave resistance demand analysis are established, which can further quantify the wave resistance demand into the design index related to the aircraft's wave resistance ability and provide reference for the development of large water rescue amphibious aircraft and the construction of emergency rescue system.