Aircraft cabin door jump prediction method, device, equipment and medium

Abstract

The invention discloses an aircraft cabin door jump prediction method and device, equipment and a medium. The method comprises the steps of obtaining a first feature point corresponding to a skeleton and a second feature point corresponding to a cabin door; acquiring a first shape error corresponding to the framework and a second shape error corresponding to the cabin door; according to the second feature point, obtaining a rotation speed vector and a normal vector corresponding to the second feature point; according to the rotation speed vector and the normal vector, obtaining an order difference change rate at the second feature point; and according to the first shape error, the second shape error and the order difference change rate, obtaining cabin door order difference prediction data. The method is based on the actually measured data of the aircraft cabin door and the skeleton, predicts the jump data in combination with the motion relation, more truly reflects the cabin door jump condition, does not need to assemble the cabin door on the skeleton for measurement, avoids repeated assembly, measurement and adjustment of the cabin door, is high in accuracy, and effectively improves the cabin door jump data measurement efficiency.

Description

technical field [0001] The present application relates to the technical field of aircraft assembly, and in particular, to a method, device, equipment and medium for predicting the door step difference of an aircraft cabin. Background technique [0002] In the design and manufacture of advanced aircraft at home and abroad, in order to facilitate maintenance and functional needs, it is necessary to open channels, such as the surface cover or the landing gear door. Implement on or off. As an important quality indicator, the discontinuity of the aircraft shape and surface has different effects on the aerodynamic lift, drag and stability of the aircraft during high-speed flight. Specifically, it is necessary to strictly control the step difference of the moving parts. [0003] Usually, the aircraft's cabin door and other similar structures use its hinges, control points, locks, etc. as the main interface to realize the docking with the fixed structure. These interfaces are also ...

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Problems solved by technology

[0005] The main purpose of this application is to provide a method, device, equipment and medium for predicting aircraft door steps, aiming to solve the problem of low efficiency in measuring aircraft door steps in the prior art

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