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The research focuses on sandwich foam structures, a type of material made of two strong outer layers with a lightweight foam core in between. This structure is not only strong but also capable of absorbing large amounts of energy during impact. In the case of amphibious aircraft, these materials are used in the floats—the components that allow the aircraft to land and stay stable on water. When an aircraft touches down on water, the floats experience intense impact forces. If not properly designed, this can lead to structural damage or even accidents. The study investigates how different foam configurations can improve the float’s ability to absorb impact energy and reduce stress on the aircraft structure. Using advanced simulation techniques and optimization methods, the researchers found that adjusting the thickness and density of the foam core plays a critical role in improving performance. A well-designed foam structure can significantly reduce impact forces, making landings smoother and safer. In simple terms, the foam acts like a cushion—absorbing shock and protecting the aircraft and its passengers. This innovation is closely linked to Sustainable Development Goal (SDG) 9: Industry, Innovation, and Infrastructure. SDG 9 emphasizes the importance of developing resilient infrastructure and fostering innovation. By improving the safety and efficiency of amphibious aircraft, this research contributes to more reliable transportation systems—especially in remote or island regions where water landings are essential. Beyond safety, there are also environmental benefits. Lightweight materials reduce fuel consumption, which helps lower emissions. This makes amphibious aircraft not only safer but also more sustainable. In regions where access is limited, such aircraft can support emergency response, medical services, and logistics—improving overall quality of life. Another important aspect of this study is its broader impact. The same sandwich foam technology can be applied in other fields, such as marine vessels, automotive crash protection, and even aerospace structures. This shows how a single innovation can influence multiple industries. In everyday language, this research highlights how smart material design can solve real-world challenges. By carefully engineering what’s inside a structure, scientists can create systems that are stronger, lighter, and safer. As technology continues to evolve, innovations like sandwich foam floats remind us that safety doesn’t always come from bigger or heavier designs—but from smarter ones. And in the future of transportation, that intelligence may be what keeps us safe—whether on land, in the air, or on water.