Test method for verifying opening and closing functions of cargo door

A test method and cargo door technology, applied in the field of functional testing, can solve problems such as the boundaries that cannot truly simulate the opening and closing of the door, test safety threats, and problems that cannot be found in time, so as to achieve easy implementation, strong operability, and ensure safety Effect

Active Publication Date: 2014-02-05
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are mainly two test methods for verifying the opening and closing function of the cargo door: one is to open and close the door when the fuselage structure is not loaded, this verification method cannot truly simulate the boundary of the door opening and closing in

Method used

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  • Test method for verifying opening and closing functions of cargo door

Examples

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Comparison scheme
Effect test

Example Embodiment

[0023] Example one

[0024] Take the comprehensive functional test of a certain aircraft rear body as an example for verification.

[0025] First, the rear section of the fuselage equipped with the cargo door and the dummy vertical tail joint are selected as the test pieces to verify the function test of the cabin door. The aerodynamic and inertial loads on the fuselage are loaded through tape; the loading load on the fuselage floor is through the pressure. The beam is loaded on the floor plane; the theoretically calculated vertical tail joint load is loaded on the joint through the vertical tail joint dummy, and the cargo door is closed; the fuselage and vertical tail joint dummy are loaded step by step, when the load is applied At 30% of the ultimate load, the upper lock of the middle door of the rear cargo door failed to be locked; it was later found that the reason was that the rear cargo door middle door retracted and released the actuator during installation and debugging, an...

Example Embodiment

[0027] Example two

[0028] Take the comprehensive functional test of a certain aircraft rear body as an example for verification.

[0029] First, the rear section of the fuselage equipped with the cargo door and the dummy vertical tail joint are selected as the test pieces to verify the function test of the cabin door. The aerodynamic and inertial loads on the fuselage are loaded through tape; the loading load on the fuselage floor is through the pressure. The beam is loaded on the floor plane; the theoretically calculated vertical tail joint load is loaded on the joint through the vertical tail joint dummy, and the cargo door is closed; when the load is applied to 60% of the ultimate load, the door is opened and closed for the first time During the test, the rear cargo door airtight door did not give a lock signal, which caused the rear three doors to fail to close normally and the test was suspended; after it was found that the reason was that the airtight door sensor was instal...

Example Embodiment

[0031] Example three

[0032] Take the comprehensive functional test of a certain aircraft rear body as an example for verification.

[0033] First, the rear section of the fuselage equipped with the cargo door and the dummy vertical tail joint are selected as the test pieces to verify the function test of the cabin door. The aerodynamic and inertial loads on the fuselage are loaded through tape; the loading load on the fuselage floor is through the pressure. The beam is loaded on the floor plane; the theoretically calculated vertical tail joint load is loaded on the joint through the vertical tail joint dummy, and the cargo door is closed; when the load is applied to 55% of the ultimate load, the door is opened and closed for the second time During the test, the second set of lock mechanism of the right door of the rear cargo door failed to open normally, and the end of the control rod of the set of lock mechanism was bent. After inspection, another three sets of lock mechanisms w...

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Abstract

The invention belongs to the technical field of function test, and relates to a test method for verifying the opening and closing functions of a cargo door designed specific to the opening and closing function test of the cargo door. According to the method, the state of the cargo door during opening and closing function test can be accurately simulated; problems can be found and solved in time in a testing process, and smooth proceeding of the test is ensured; the test risk is lowered, and the safety of the test and test articles is ensured. A test method for verifying the opening and closing functions of the cargo door is realized, the accuracy of test verification is improved, the safety of test is ensured, the problem that the test state cannot be accurately simulated and problems cannot be found in the test process existing in the conventional method are solved, and smooth proceeding of the test is ensured by making adjustment in time.

Description

technical field [0001] The invention belongs to the technical field of function test, and relates to a test method for verifying the opening and closing function of a cargo door, which is used for the design of the opening and closing function test of the cargo door. Background technique [0002] At present, there are mainly two test methods for verifying the opening and closing function of the cargo door: one is to open and close the door when the fuselage structure is not loaded, this verification method cannot truly simulate the boundary of the door opening and closing in flight; the other is Directly load the fuselage structure to the limit load and conduct the opening and closing function test. This verification method cannot find problems in time during the test, which has a relatively large risk and poses a threat to the safety of the test. Contents of the invention [0003] The purpose of the present invention is to propose a test method for verifying the opening a...

Claims

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Application Information

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IPC IPC(8): B64F5/00B64F5/60
Inventor 肖允庚罗远燕薛应举
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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