Flex wing minisize aerial craft fluid-solid coupling numerical value emulation method

A micro-aircraft, fluid-solid coupling technology, applied in the direction of instruments, image data processing, electrical digital data processing, etc., can solve problems such as errors, and achieve the effect of speeding up the research and development process and reducing development

Inactive Publication Date: 2008-08-06
TSINGHUA UNIV
View PDF0 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current coupling between airflow and structure is mostly ignored or rarely considered in conventional MAV numeri...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flex wing minisize aerial craft fluid-solid coupling numerical value emulation method
  • Flex wing minisize aerial craft fluid-solid coupling numerical value emulation method
  • Flex wing minisize aerial craft fluid-solid coupling numerical value emulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043]In order to better understand the technical solution of the present invention, the above algorithm is applied to the analysis of a flexible wing MAV with a cruising speed of 10m / s and an angle of attack of 6 degrees for further description.

[0044] Step 1 Establish a 3D solid model of the flexible wing MAV. According to the actual size of the flexible MAV, it is input through the mouse, keyboard, etc., and its model is manually established by using Solidworks 3D modeling software, and the established 3D model is saved in the mav.sat format.

[0045] Step 2 meshes the flexible wing MAV model. Import the MAV 3D model in sat format obtained in step 1 into ANSYS software, and divide the 3D model into tetrahedral grids through mouse, keyboard and other input devices in the order from line to surface and from surface to volume to achieve continuous system discrete For the purpose of optimization, the grid model of the MAV wing structure is obtained and saved as a mav.db fo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the flex-wing miniature aircraft auxiliary design technical field. The invention is characterized in that: the following modules which are respectively a structure-flow field entity modeling and basic assumption module, a k-epsilon turbulent flow model flow field analysis module, a linear elastic structure analysis module and a structure-flow field coupling interface module are set in a computer, wherein, the structure-flow field entity modeling and basic assumption module is provided with flexible wings and a three-dimensional model in a circumferential flow field; the k-epsilon turbulent flow model flow field analysis module is used for obtaining distribution pressure on a fluid-solid coupling surface of the flow field under different flight conditions; the linear elastic structure analysis module obtains displacement and speed of flex-wing structure meshes; the structure-flow field coupling interface module obtains deformation of the meshes of the flow field from the obtained displacement of the flex-wing structure meshes, and the deformation is taken as an input condition of the k-epsilon turbulent flow model flow field analysis module and then outputted; distribution pressure on wing surfaces of the flexible wings is obtained according to the distribution pressure of the flow field and taken as an input condition of the linear elastic structure analysis module and then outputted. The flex-wing miniature aircraft has the advantages that: higher accuracy than two dimensional analysis is guaranteed and simultaneously the efficiency of simulation calculation can be improved.

Description

technical field [0001] The invention relates to a method in the field of computer-aided analysis tools, in particular to a fluid-solid coupling numerical simulation method for a micro-aircraft with flexible wings. Background technique [0002] Micro air vehicle (MAV, Micro Air Vehicle) has the characteristics of small size, good concealment, light weight, low cost, easy to carry, etc., and has very broad application prospects in military and civilian fields. Generally, micro air vehicles can be divided into rigid wing MAV and flexible wing MAV according to the characteristics of the airfoil. Among them, the design of the flexible wing MAV is based on the principle of bionics. The structure adopts the combination of carbon skeleton and film skin. It has good elasticity and can flexibly change its shape. At the same time, the thin film skin made of special materials can also be integrated with the control system of MAV, which can simplify the geometric model of MAV. With the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/50G06T17/00
Inventor 田凌张晓琴薛莲
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap