In this paper,based on the theory of aerodynamics,the simple and easy formula of calculating time of filling gas is deduced by simplifying the flow schema establishing the mathematic model.

• 基于空气动力学理论,通过简化流动过程,建立数学模型,推导出了较为准确的充气压力与时间的关系式,并结合实例验证了该计算公式的正确性。