A Fuel Supply and Delivery System for Four-Engine Turboprop Aircraft

Abstract

The invention provides a fuel supply and delivery system for a four-engine turboprop aircraft, comprising a fuel delivery tank D and a fuel supply tank A, a fuel delivery tank B and a fuel delivery tank C arranged adjacently in sequence, and the side near the wingtip inside each fuel tank is the outer side , the side away from the wingtip is the inner side; the inner side of fuel supply tank A, fuel delivery tank B, and fuel delivery tank C are respectively equipped with fuel pump A, fuel pump B, and fuel pump C, and both fuel pump C and fuel pump B pass through the same fuel delivery pipeline It is connected with the fuel supply tank A, and the fuel pump A is connected with the engine; the outer sides of the fuel supply tank A, fuel delivery tank B, and fuel delivery tank C are respectively provided with injection pump A, injection pump B, injection pump C, and injection pump C It is connected with fuel pump B, and both injection pump B and injection pump A are connected with fuel pump A; both sides of fuel delivery tank D are equipped with fuel pump D and injection pump D, and fuel pump D is connected with all fuel The pump C is connected, and the injection pump D is respectively connected with the fuel pump C adjacent to the fuselage.

Description

technical field [0001] The invention relates to the technical field of engine fuel delivery, in particular to a fuel delivery system for a four-engine turboprop aircraft. Background technique [0002] Traditional four-engine turboprop aircraft usually have two independent fuel supply systems on the left and right. The left fuel supply system supplies the fuel in each fuel tank of the left wing to the two engines on the left wing at the same time according to a certain order of fuel consumption. The right fuel supply system According to a certain fuel consumption sequence, the fuel in each fuel tank of the right wing is supplied to the two engines of the right wing at the same time. [0003] This prior art has following defective: [0004] 1. When the oil pump in a certain fuel tank fails, a large amount of fuel will remain in the fuel tank of this group. It is also not allowed to use, resulting in an increase in the amount of unusable fuel in the entire aircraft, thereby a...

AI Technical Summary

Problems solved by technology

[0004] 1. When the oil pump in a certain fuel tank fails, a large amount of fuel will remain in the fuel tank of this group. It is also not allowed to use, resulting in an increase in the amount of unusable fuel in the entire aircraft, thereby affecting the execution of flight missions;

[0005] 2. When there is less fuel remaining in a certain fuel tank during the fuel supply process, if the aircraft attitude (pitch, roll) is large, the fuel pump may not be immersed in the fuel, which will affect the fuel supply of the system

Images