This study presents a numerical model of a pressure-fed system with flow passage opening devices (FPODs) designed for an air vehicle with a high degree of maneuverability. The FPOD is a mechanical device that connects two separate fuel reservoirs and functions as a valve allowing liquid fuel to flow while minimizing the movement of pressurizing gas from upstream fuel tanks into downstream fuel tanks. A reduced-order model for the fuel motion in an annular fuel tank was developed to configure the depth and inclination angle of the free fuel surface on the cross-sectional plane of an annular fuel tank under accelerating conditions during flight. Furthermore, a newly proposed model that reflects the dynamic characteristics of the FPOD is used to determine the fluid type that is transported through the device. A simulation example shows that the full numerical model captures changes of the fuel transport condition over time in a complete pressure-fed system of annular fuel tanks with FPODs subject to acceleration.

这项研究提出了一种带有流动通道打开装置（FPOD）的压力馈送系统的数值模型，该装置设计用于具有高度机动性的飞行器。FPOD是一种机械设备，可连接两个单独的燃油箱并用作阀，使液体燃料能够流动，同时最大程度地减少增压气体从上游燃油箱到下游燃油箱的运动。开发了用于环形燃料箱中燃料运动的降阶模型，以在飞行过程中加速条件下配置环形燃料箱横截面上的自由燃料表面的深度和倾斜角。此外，新提出的反映FPOD动态特性的模型用于确定通过设备传输的流体类型。