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Method for determining aircraft dynamic weight characteristic

A weight and dynamic technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of reducing the accuracy of aircraft dynamic weight characteristic data calculation results, the analysis process cannot truly reflect the characteristics of liquid fluid characteristics, fuel system characteristics, and cannot dynamically Analysis and other issues

Inactive Publication Date: 2016-04-06
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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Problems solved by technology

The above assumptions determine that the analysis process cannot truly reflect the characteristics of the liquid fluid and the fuel system, and there is a problem that the dynamic analysis cannot be performed according to the flight profile, which greatly reduces the accuracy of the calculation results of the aircraft dynamic weight characteristics data

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  • Method for determining aircraft dynamic weight characteristic
  • Method for determining aircraft dynamic weight characteristic

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Embodiment Construction

[0022] In order to better understand the method for determining the dynamic weight characteristics of an aircraft according to the solution of the present invention, the preferred embodiments of the method for determining the dynamic weight characteristics of an aircraft of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] The method for determining the dynamic weight characteristics of an aircraft provided by the present invention is used for analyzing the dynamic weight characteristics of the whole aircraft under overload conditions, and is characterized in that the dynamic weight characteristics of the aircraft are determined by analyzing the dynamic weight characteristics of the fuel under overload conditions, including the following steps :

[0024] S1, establish the fuel tank model and determine the diaphragm model;

[0025] S2, determine the oil quantity and liquid level position in the fuel tank in the fuel ta...

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Abstract

The invention provides a method for determining aircraft dynamic weight characteristic, which belongs to weight design in the field of aircraft overall design and is used for analyzing whole aircraft dynamic weight characteristic under overload condition. The method comprises the following steps of: S1, establishing an oil tank model and determining a clapboard model; S2, determining oil mass and liquid level position in the oil tank in the oil tank model established in the S1; S3, analyzing aircraft overload information, and determining load on fuel oil, empty aircraft usage and external load weight characteristic information; S4, performing discretization for the oil tank model established in the S1 according to the oil mass and the liquid level position in the S2; S5, in combination with the load on fuel oil determined in the S3, performing simulation for a finite element model obtained in the S4; S6, according to the fuel oil dynamic weight characteristic obtained in the S5, and in combination with the S3, obtaining whole aircraft dynamic weight characteristic data. The method of determining aircraft dynamic weight characteristic, provided by the invention, is a method capable of accurately tracing variation conditions of free surface, and calculating the dynamic weight characteristic of the fuel oil and even the whole aircraft.

Description

technical field [0001] The invention relates to weight design in the field of overall design of aircraft, in particular to a method for determining dynamic weight characteristics of an aircraft. Background technique [0002] The weight characteristics of an aircraft are important original data and design parameters for aircraft design, which not only affect the design work in multiple fields such as aircraft load, performance, stability, and flutter. The calculation of aircraft weight and center of gravity mainly consists of three parts: empty aircraft, weapon loading and fuel. Usually the weight and center of gravity of empty aircraft and weapons are fixed and easy to obtain; it is more difficult to accurately calculate the weight and center of gravity of fuel that is in continuous or discontinuous change, and it is also the key to real-time calculation of aircraft weight characteristics . [0003] The analysis of aircraft dynamic weight characteristics is mainly restrict...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/23
Inventor 闫志彬杨凯姚艳张安坤
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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