# Embrace the Era of Drones: A New Practical Design Approach to Emergency Rescue Drones
The key feature of the drone is that the fault repair algorithm is adopted, and the amplitude improves the security and reliability of the drone. During the volcanic eruptions in Australia in 2020, the country's rescue team took advantage of the measurement of disaster volume and early warning of disasters. Drones have unique advantages in preventing and extinguishing the threat of disasters. They can reduce the difficulty, cost, and risk coefficient of the operation and simultaneously improve the efficiency and quality of the operation to effectively reduce the casualty insurance and economic loss caused by the disaster. In the past few years, remarkable progress has been made in the research of aviation machine technology, which covers structural design, operation style, performance, and navigation control systems, especially aircraft types. It can be applied to multiple domains and effectively improves the efficiency and safety of operation [5]. Previous studies on drones have focused mainly on technical systems [6; 7], hardware fusion [8], structural science [9], and research methods [10; 11]. These studies have analysed different response types and different research degrees, but there is a lack of research on drone modelling [12; 13] and a lack of integration of innovative models in the process of product development and design path expansion [14]. The development and evolution of drone modelling is an evolutionary process, and its characteristics are influenced by functional requirements, technical conditions, cognitive balance, and artistic aesthetics in different periods. Drone modelling has experienced three stages: the guiding period of functionalism, the development period of dynamic science, and the fusion period of industrial design. The evolution of modelling reflects the gradual transformation of functional value to aesthetic value. In the fusion period of industrial design, the shape of the drone presents the development trend of diversification, miniaturisation, block moulding, multirotor incorporation, and so on, which needs to satisfy functional and aesthetic requirements. However, there is a relative lack of research on drone-built deep-seated systems, and the customer experience needs to be improved. To increase user satisfaction with emergency rescue drone products, a product modelling design method based on the fuzzy Kano-QFD-FBS model is proposed. First, the initial user requirements of the emergency rescue drone products are obtained through a questionnaire, and the fuzzy Kano model is utilised and combined with the better-worse coefficient method to categorise the attributes, define the priorities of the user requirements, and screen out the key user requirements. Second, the QFD model is used to construct the quality house, analyse the key user requirements quantitatively, and obtain the design elements and weights of the emergency rescue drone product. The obtained key design elements are subsequently imported into the FBS model to complete the mapping transformation from the functional elements to the structural elements of the emergency rescue drone products and realise the styling design of the emergency rescue drone products. Finally, the user satisfaction scale based on appearance, functionality, and interaction was developed and the System Usability Scale (SUS) was used to evaluate user satisfaction with the emergency rescue drone design scheme. The new design scheme scored higher and showed significant differences in satisfaction ratings compared to the previous scheme. This study shows that the method of product styling design based on the fuzzy Kano-QFD-FBS model can comprehensively acquire and analyse user requirements, realise accurate mapping from user requirements to product design elements, and output the specific solution of the emergency rescue drone product styling design.