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Aircraft falling and collision characteristic research method based on fuselage cargo loading

A technology of cargo and characteristics, applied in the research field of aircraft crash characteristics based on fuselage loaded cargo, can solve the problem of no aircraft crash characteristics research, and achieve the effect of increasing the energy absorption burden

Pending Publication Date: 2022-07-29
CIVIL AVIATION UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no relevant record in the prior art that can study the crash characteristics of an aircraft when the fuselage is loaded with cargo

Method used

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  • Aircraft falling and collision characteristic research method based on fuselage cargo loading
  • Aircraft falling and collision characteristic research method based on fuselage cargo loading
  • Aircraft falling and collision characteristic research method based on fuselage cargo loading

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] A method for studying the crash characteristics of an aircraft based on the cargo on the fuselage, comprising the following steps:

[0088] S1: Use the drop weight impact test device to carry out the cargo impact test;

[0089] Specifically, S101: Select suitcases of different materials as the test pieces for the cargo impact test;

[0090] The test piece of the cargo impact test is selected as a 24in luggage that needs to be checked in, and it is divided into two types, cloth luggage and PVC luggage.

[0091] S102: Design the number and test conditions of suitcases of different materials;

[0092] Considering that in real life, the vast majority of passengers' luggage are PVC luggage, so the number of test pieces of cloth luggage is 8, and the number of test pieces of PVC luggage is 16, which are divided into two groups of tests.

[0093] The suitcase is full of clothes, and the size of the suitcase is 400mm×580mm×300mm. In the end, the weight of each suitcase was b...

Embodiment 2

[0180] On the basis of Example 1, the drop weight impact test device described in step S1 is as follows Figure 29-35 As shown, it includes two uprights 1, a test platform 2 and a drop weight 3; the two uprights 1 can be fastened on the ground by bolts, and the tops of the two uprights 1 are welded and fixed by the top plate 4, the said The test platform 2 is located at the center of the two columns 1, and the test platform 2 can also be fastened on the ground by bolts to ensure that no displacement occurs during the test. There are two fixed holes 201 connected to the front and rear between the side surfaces, and two fixed holes 201 connected to the left and right are also opened between the left side and the right side of the test platform 2. During the test, the luggage case is placed On the test platform 2, the luggage case to be tested can be fixed by using a fixing belt through the fixing hole 201, and the drop weight 3 is located directly above the test platform 2;

[...

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Abstract

The invention discloses an aircraft falling collision characteristic research method based on fuselage cargo loading, and the method comprises the following steps: S1, carrying out a cargo impact test through a falling weight impact test device; s2, analyzing a test result of the cargo impact test; s3, simulating the cargo impact test in the step S1; and S4, according to a simulation result in the step S3, carrying out simulation research on the falling and collision response of the fuselage frame sections with different cargo loading capacities in the cargo hold of the aircraft. According to the method, dynamic impact tests are carried out on luggage cases made of different materials at different super speeds to obtain acceleration response and displacement curves of the luggage cases, finite element model material parameters of the cargo are obtained based on dynamic impact compression test data of the luggage cases, and a finite element model of the cargo hold cargo is established. And the falling and collision characteristics of the fuselage under different cargo loading conditions can be studied.

Description

technical field [0001] The invention relates to the technical field of aircraft crash characteristics, in particular to a method for researching aircraft crash characteristics based on fuselage-loaded cargo. Background technique [0002] During the crash of the aircraft, the protection of the fuselage to the passengers is mainly realized by the energy absorption of the fuselage structure. For civil aviation transport aircraft, the main energy absorption way is the deformation and failure of the substructure of the cabin floor, and the two important components of the substructure of the cabin floor are the substructure of the cargo floor and the cargo in the cargo hold (mainly passenger luggage). Therefore, in order to more realistically simulate the energy absorption characteristics of the fuselage during the actual crash process, it is of engineering significance to consider the contribution of the cargo in the cargo hold to the crash energy absorption of the fuselage for t...

Claims

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Application Information

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IPC IPC(8): G01M7/08G06F30/23G06F119/14
CPCG01M7/08G06F30/23G06F2119/14
Inventor 冯振宇牟浩蕾解江刘义肖培
Owner CIVIL AVIATION UNIV OF CHINA