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A design and processing method suitable for extremely light mass delivery model

A model and quality technology, applied in the aviation field, can solve problems such as large influence of model design and processing quality experience, unstable quality control, time-consuming and labor-consuming, etc., to improve design and processing efficiency, low design limit requirements, and save design and the effect of processing time

Active Publication Date: 2022-07-15
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The entire design and processing process is time-consuming and labor-intensive. Generally, it takes a few days or even longer to design a state of the launch model, and it may take several months to design and process the entire set of launch models.
The model design and processing quality are greatly affected by the experience of the operator, and the quality control is unstable
And this method is only applicable to delivery models with relatively high quality, and this method is not applicable to delivery models with extremely light weight after scaling

Method used

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  • A design and processing method suitable for extremely light mass delivery model
  • A design and processing method suitable for extremely light mass delivery model
  • A design and processing method suitable for extremely light mass delivery model

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Effect test

Embodiment 1

[0071] The flow sequence of the whole method is design module - part additive manufacturing - part assembly. The design module includes two subroutines, the quality characteristic calculation module and the quality characteristic design module.

[0072] The mass characteristic calculation module calculates the weight, center of gravity and moment of inertia of the model according to the model scaling and dynamic similarity criteria, and takes the calculated weight, center of gravity and moment of inertia as the target parameters of the mass characteristic design module.

[0073] The core idea of ​​the mass characteristic calculation module is: hollow out the middle of the solid model to form a shell, and the hollowed out part is continuous. The basic thickness of the shell needs to be guaranteed, and its shape is not limited. The filling part is placed inside the hollowed part. The filling part can be made of materials of different densities. The filling part is continuous and...

Embodiment 2

[0083] A design and processing method suitable for an extremely light mass delivery model, characterized in that it includes design and processing steps, and is characterized in that it manages to include the following modules: a mass characteristic calculation module, a mass characteristic design module, component additive manufacturing, and model assembly, The design method steps are as follows:

[0084] (1) Parts are firstly divided, and the model entity without any operation is defined as a solid part, the cut-out part is defined as a hollow part, and the filled part is defined as a filled part;

[0085] (2) Then the cross-sectional profile and axial profile of the solid part are described by the profile formed by point Ai and the profile formed by point a respectively, and the cross-sectional profile and axial profile of the hollowed-out part are described by the profile formed by point Bi and point b respectively The formed contour description, the cross-sectional contou...

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Abstract

The invention belongs to a design and processing method suitable for an extremely light mass delivery model, which is characterized in that the process sequence of the whole method is design module-component additive manufacturing-component assembly, wherein the design module includes a mass characteristic calculation module and a mass characteristic design module Two subroutines, the mass characteristic calculation module calculates the weight, center of gravity and moment of inertia of the model according to the model scaling and dynamic similarity criteria, and uses the calculated weight, center of gravity, and moment of inertia as the target parameters of the mass characteristic design module, and the mass characteristic calculation The core idea of ​​the module is: hollow out the middle of the solid model to form a shell, and the hollowed part is continuous, and the basic thickness of the shell needs to be guaranteed, and its shape is not limited. The method of placing the filling part inside the hollowed-out part uses an adaptive program to iteratively solve the contour shape of the hollowed-out part and the filling part, so as to configure the weight, center of gravity and moment of inertia of the model to meet the needs of the design goals.

Description

technical field [0001] The invention belongs to the field of aviation technology, and in particular relates to a design and processing method suitable for an extremely light weight delivery model. Background technique [0002] When external objects such as auxiliary fuel tanks, missiles, bombs, weather detectors, and air transport materials are released from the carrier aircraft, they are in the aircraft interference flow field at the initial stage of separation from the carrier aircraft. Many factors are closely related to the speed, the flight height of the carrier, the attitude of the carrier, the shape of the external object, the installation position and attitude of the external object on the carrier, and the initial delivery speed. Therefore, it is difficult to accurately obtain the motion trajectory and attitude of the delivery object at the initial moment of leaving the carrier by theoretical or simulation calculation methods. In order to understand the trajectory a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F30/20G06F111/06G06F113/10
CPCG06F30/17G06F30/20G06F2111/06G06F2113/10
Inventor 陈瑶李锐冯文梁夏生林赵艳平陈蕊李涛陈斌
Owner CHENGDU AIRCRAFT INDUSTRY GROUP