本文件描述了为大型商用飞机设计燃油系统时的主要设计驱动因素和注意事项。它从系统/飞机层面讨论了设计，并不打算作为单个系统部件的设计手册，尽管它确实参考了其他SAE规范，其中给出了关于特定部件和子系统的更多细节。它确实包括了一些与燃料系统尺寸相关的计算示例，这些计算基于NAV-AIR-06-5-504中给出的计算，以及一个附录，总结了对燃料系统设计至关重要的基本流体力学方程。 众所周知，如今大多数计算将通过建模工具进行，而不是手工进行，但设计师理解这些原理是很重要的。本文件的后续版本将包括附录，其中给出了军用飞机、小型商用飞机和旋翼机的具体考虑。

This document describes the major design drivers and considerations when designing a fuel system for a large commercial aircraft. It discusses the design at a system/aircraft level, and is not intended as a design manual for individual system components, though it does refer out to other SAE specifications where more detail on specific components and sub systems is given. It does include examples of a number of calculations associated with sizing of fuel systems, based on those given in NAV-AIR-06-5-504, as well as an appendix summarizing basic fluid mechanical equations which are key for fuel system design. It is acknowledged that most of these calculations would today be performed by modelling tools, rather than by hand, but it is considered important for the designer to understand the principles.It is intended that later issues of this document will include appendices which give specific considerations for military aircraft, smaller commercial aircraft, and rotorcraft.