An optimizing method and an evaluation system for secondary energy of planes

Abstract

The invention provides an optimizing method and an evaluation tool for secondary energy of planes. The method comprises the steps of modeling each system of a plane based on plane requirement decomposition in a top-down manner and performing analysis; defining system connectors, determining the energy interaction condition among the systems, and providing an optimization solution for establishing a system energy model for a comprehensive energy system architecture. The method realizes integrated design of a plane system. The design of a plane airborne system is integrated. By inputting a plane-level top layer parameter from a man-machine interface, top-down decomposition is performed on airborne system requirements, so that sub-system requirements are obtained. The energy consumption of the plane under a designated envelop can be calculated based on developed sub-system energy flow models. Further optimization for plane energy can be completed on the basis. The evaluation tool for secondary energy of planes is used in a stage of initial design of a plane and can also be used for modification of conventional plane types. The user interface is practical, convenient, operable and extendable. The optimized design of secondary energy of planes is realized, oil consumption is reduced and the weight of planes is reduced.

Description

technical field [0001] The invention belongs to the design field of multi-electrical / electromechanical systems of civil aircraft, and in particular relates to an optimization method and an evaluation system for secondary energy sources of an aircraft. Background technique [0002] The energy extraction of the aircraft engine by the multi-electric secondary energy system directly affects the fuel efficiency of the aircraft. The extraction of the secondary energy of the existing aircraft is based on the estimation of the maximum demand of each subsystem (electrical energy, air pressure energy, hydraulic energy). The secondary energy system does not quantify the extraction of the engine shaft power, which is imprecise and uneconomical; At the same time, the extraction of energy is not estimated according to the energy demand under different envelopes of aircraft operation. In the end, the calculation of the engine shaft power extraction by the secondary energy system is very d...

AI Technical Summary

Problems solved by technology

The extraction of the secondary energy of the existing aircraft is based on the estimation of the maximum demand of each subsystem (electrical energy, air pressure energy, hydraulic energy). The secondary energy system does not quantify the extraction of the engine shaft power, which is imprecise and uneconomical; At the same time, the extraction of energy is not estimated according to the energy demand under different envelopes of aircraft operation

In the end, the calculation of the engine shaft power extraction by the secondary energy system is very different from the energy consumption required in the actual operation of the aircraft. The design redundancy of the generator and engine is too large, resulting in an increase in aircraft weight and high fuel consumption.

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