Airplane fuel supply system and airplane wing pipeline assembly method

An airplane fuel supply system comprising:

• a wing fuel tank formed from a wing tip fuel tank, a central fuel tank, and a wing root fuel tank which are disposed within an airplane main wing;
• a flapper valve that allows fuel movement from the wing tip fuel tank to the central fuel tank and restricts fuel movement in the opposite direction;
• another flapper valve that allows fuel movement from the central fuel tank to the wing root fuel tank and restricts fuel movement in the opposite direction;
• a collector tank that supplies fuel to an engine;
• a wing tip fuel pump that supplies fuel within the wing tip fuel tank to the collector tank;
• a central fuel pump that supplies fuel within the central fuel tank to the collector tank;
• and
• a wing root fuel pump that supplies fuel within the wing root fuel tank to the collector tank;
• wherein when the fuel delivery volume of the wing tip fuel pump is represented by Vt, the fuel delivery volume of the central fuel pump is represented by Vc, the fuel delivery volume of the wing root fuel pump is represented by Vr, and the fuel delivery volume from the collector tank to the engine is represented by Ve, the fuel delivery volumes Vt, Vc, Vr, and Ve are set so as to satisfy relationships Vr>Ve, Vt+Vc>Ve, and Vc<Ve.