The fuel system installed in the Boeing Model 747 airplane is described in general, and the pressure fueling system treated in detail.The general treatment includes description of fuel tanks, engine fuel feed system, fuel jettison system, defueling system, fuel quantity indicating system, and fueling system. The component parts of the pressure fueling system are described, and performance of the system is evaluated.In the design of the 747 airplane, surge pressures and static electrification, possible problem areas associated with refueling large airplanes, have been minimized. The fuel system of the 747 meets applicable Federal Aviation Regulations and customer requirements.
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