Aircraft rolling body model and manufacturing method thereof

Abstract

The invention relates to an aircraft rolling body model and a manufacturing method thereof, belongs to the technical field of aircraft ground experiments, and particularly relates to a manufacturing method of designing an aircraft rolling body scaled model on the premise of guaranteeing the shape of an aircraft rolling body. The manufacturing method adopts an adjustment manner of axial splitting of the housing of the aircraft rolling body and double internal balancing weights to complete the manufacturing of the aircraft rolling body model through material selection, computer simulation, processing and surface finish of parts, reflecting material preparation, point rolling imprint marking, rolling body model assembly, quality parameter measurement and adjustment and encapsulation. The aircraft rolling body model comprises a head, a center rod, a cylinder body, a hook, a first balancing weight, a tail, a tail plug and a second balancing weight, meets the requirements of an aircraft rolling body model ground experiment by setting small-thickness and high-precision measuring marking points, can realize high-precision simulation to the shape, quality, deflection rotation inertia, pitching rotation inertia, revolution rotation inertia of the rolling body at a low cost under the condition of small size.

Description

technical field [0001] The invention belongs to the technical field of aircraft ground tests, and in particular relates to a manufacturing method for designing a scale model of an aircraft rolling body under the condition of ensuring the shape of the aircraft rolling body. Background technique [0002] In the ground test of the aircraft, it is necessary to design and process the corresponding scale model of the rolling body of the aircraft. In order to improve the accuracy of test data, it has important scientific and practical application value to realize high-precision simulation of quality parameters such as rolling body shape, mass, center of mass position, yaw moment of inertia, pitch moment of inertia, and gyration moment of inertia. In the research and development of the rolling body model, Nathan E. Murray et al. of the University of Mississippi designed a model consisting of a shell, an aluminum reinforced backplane, and a counterweight in 2009, and the simulation a...

AI Technical Summary

Problems solved by technology

Ordinary diffuse reflective materials can reflect light in all directions, but their reflectivity is similar to that of the background material, so the photosensitive image is easily disturbed by noise

Specular reflection-based materials have extremely high reflectivity, and the image grayscale is much larger than the background grayscale, but it can only be transmitted at a specific angle, resulting in a high gray value image in the CCD only at a specific angle and position , so the rotational motion of the rolling body cannot be measured

In terms of the processing of reflective marking points, domestic scientific research institutions mostly adopt the method of pasting commercialized reflective points on the surface of the model, and the repeatability accuracy of this method is difficult to guarantee

At the same time, the thickness of commercial reflective marking points is relatively large, which can easily affect the air flow field on the surface of the rolling body model, resulting in distortion of test results

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