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Auxiliary fuel system

A fuel system and oil system technology, applied to the fuel tank of the power plant, etc., can solve the problems of aircraft center of gravity change, affect aircraft operation and flight safety, exceed the aircraft, etc., and achieve the effect of maintaining the center of gravity

Active Publication Date: 2013-04-24
COMAC +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

For aircraft with 2 fuel tanks (left and right main fuel tanks), the fuel cannot be transferred to only one of the main fuel tanks of the aircraft, which will cause the center of gravity of the aircraft to change, or even exceed the envelope of the center of gravity of the aircraft, affecting aircraft operation and flight safety.

Method used

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Embodiment Construction

[0025] The purpose of the present invention is to provide an auxiliary fuel system that reduces system weight, equipment and maintenance costs to aircrafts that have low frequency of use of auxiliary fuel tanks and no special requirements for transit time, and controls the fuel consumption sequence and center of gravity of the aircraft, reducing Heat source in the small auxiliary tank.

[0026] The auxiliary fuel system according to the present invention mainly includes:

[0027] Transfer the fuel in the auxiliary fuel tank 30 to the transfer subsystem in the left main fuel tank 10 and the right main fuel tank 20 at the same time;

[0028] A refueling subsystem for adding fuel to the auxiliary fuel tank;

[0029] And the auxiliary fuel tank ventilation subsystem to ensure the pressure in the auxiliary fuel tank.

[0030] The transmission subsystem mainly consists of the transmission power source components in the auxiliary fuel tank, the transmission control components in th...

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Abstract

The invention provides an auxiliary fuel system which comprises a fuel feed subsystem, a ventilating subsystem and a delivering subsystem. The fuel feed subsystem is used for feeding fuel in an auxiliary oil tank. The ventilating subsystem is used for guaranteeing pressure in the auxiliary oil tank. The delivering subsystem is used for simultaneously delivering fuel in the auxiliary oil tank to a left main oil tank and a right main oil tank of a plane fuel system. The auxiliary fuel system can simultaneously deliver fuel to the two main oil tanks, automatically control fuel delivering of the auxiliary tank during flight of a plane, and effectively maintains gravity center of the plane fuel system.

Description

technical field [0001] The invention relates to an auxiliary fuel system, in particular to an auxiliary fuel system for increasing the flight range of an aircraft, which has a design of transferring fuel to two fuel tanks at the same time. Background technique [0002] After the type of commercial transport aircraft is finalized, the total amount of passengers and cargo that the aircraft can carry, as well as the fuel capacity and range of the aircraft itself have been determined. However, in order to meet the needs of some specific routes, it is necessary to increase the range of the aircraft, which can generally be realized by installing auxiliary fuel tanks and systems in the cargo compartment of the aircraft fuselage. [0003] A known auxiliary fuel system comprises a set of auxiliary fuel tanks mounted in the fuselage, the fuel in which is transferred by pressurized gas into the center wing tanks of the aircraft. The refueling of the auxiliary fuel tank utilizes the re...

Claims

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Application Information

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IPC IPC(8): B64D37/18
Inventor 刘德刚游胜龙赵士洋唐宏刚周宇穗王澍
Owner COMAC
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