Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Quick prediction method for aerodynamic property

A prediction method, aerodynamic technology, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve the effects of fast calculation speed, strong operability, long range and stealth ability

Inactive Publication Date: 2013-11-13
CHINA ACAD OF AEROSPACE AERODYNAMICS
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical solution problem of the present invention is: overcome the deficiencies in the prior art, provide a kind of rapid prediction method of aerodynamic characteristic, solve the calculation speed and accuracy in the conceptual research of new generation hypersonic vehicle and the prediction of aerodynamic characteristic in preliminary design stage question

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
  • Quick prediction method for aerodynamic property
  • Quick prediction method for aerodynamic property
  • Quick prediction method for aerodynamic property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention provides a rapid prediction method of aerodynamic characteristics of aircraft, which is suitable for rapid calculation of aerodynamic characteristics of a new generation of hypersonic aircraft, and has the characteristics of fast calculation speed and high precision. In the preliminary design stage, the present invention will have broad application prospects.

[0033] Such as figure 1 As shown, the present invention provides a method for fast prediction of aerodynamic characteristics, the steps are as follows:

[0034] (1) if figure 2 As shown, the shape of the aircraft is divided into head, body, wing, rudder and inlet; the inlet can be further subdivided into the leading edge of the inlet, the rear edge of the inlet and the head of the inlet;

[0035] (2) Use triangular surface elements to approximate the various parts of the aircraft shape divided in step (1); use triangular surface elements to approximate to ensure that all corners of the tr...

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 relates to a quick prediction method for an aerodynamic property. The method comprises the steps of 1) dividing the shape of an aircraft into a head, a body, wings, a rudder and an air inlet passage; 2) adopting triangular surface elements to approach the shape of the aircraft; 3) determining the outer normal cosine and area of each triangular surface element; 4) determining the incoming flow speed vector and the included angle theta (collision angle ) of the outer normal direction of each triangular surface element; 5) determining whether each part of the shape of the aircraft is on a windward side or leeward side; 6) determining the aerodynamic property calculation method of each part of the aircraft; and 7) obtaining aerodynamic force on the triangular surface elements through calculation, and determining the aerodynamic property of the entire aircraft through an integration method. The quick prediction method for the aerodynamic property provided by the invention has the advantages that the principle is simple, the calculation speed is fast and only several seconds are required for each state; the actual operability is high; and the calculation accuracy is higher.

Description

technical field [0001] The invention provides a method for quickly predicting the aerodynamic characteristics of an aircraft, which belongs to the technical field of aerodynamic characteristics of hypersonic aircraft. Background technique [0002] The aerodynamic characteristics are the prerequisites for determining the aerodynamic shape, flight trajectory and flight performance of the aircraft. In the aerodynamic shape research and preliminary design stage of hypersonic vehicles, it is necessary to predict the aerodynamic characteristics of a large number of aircraft shapes. At present, fast calculation of aerodynamic characteristics is an effective aerodynamic prediction method at the stage of conceptual research and preliminary design of aircraft. [0003] In order to solve the problem of rapid prediction of hypersonic aerodynamic characteristics, a large number of effective engineering calculation methods have been developed: Newton method, internal voltage Newton metho...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 王鹏金鑫张卫民
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com