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

Method for reducing airfoil differential pressure resistance of fixed-wing aircraft

A pressure differential resistance, aircraft technology, applied in the field of aviation, can solve the problem of inability to eliminate turbulence in the wake area

Active Publication Date: 2019-04-16
浙江万丰飞机制造有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing technology can effectively avoid the pressure difference resistance of the airfoil, but due to the friction on the surface of the wing, this leads to the fact that no matter how the aerodynamic shape is changed, the turbulent flow in the wake area cannot be eliminated

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
  • Method for reducing airfoil differential pressure resistance of fixed-wing aircraft
  • Method for reducing airfoil differential pressure resistance of fixed-wing aircraft
  • Method for reducing airfoil differential pressure resistance of fixed-wing aircraft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] combine figure 1 , figure 2 , a method for reducing the airfoil pressure resistance of a fixed-wing aircraft: a steel wire 20 is arranged in front of the leading edge 11 of the airfoil.

[0024] The airfoil 10 is a CLARK Y airfoil.

[0025] One end of the steel wire 20 can be fixed on the fuselage of the aircraft, and the other end is fixed on the outer side of the wing. Alternatively, both ends of the steel wire are fixed on the wing, specifically, one end of the steel wire is fixed on the inner side of the wing, and the other end of the steel wire is fixed on the outer side of the wing. The inner end of the wing refers to the end of the wing close to the fuselage, and the outer end of the wing refers to the end of the wing away from the fuselage.

[0026] The diameter of the steel wire 20 depends on the thickness of the airfoil. As a preference, the diameter of the steel wire 20 has a difference of more than 50 times the thickness of the airfoil, that is, the thic...

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 discloses a method for reducing airfoil differential pressure resistance of a fixed-wing aircraft, wherein a steel wire is arranged in front of a leading edge of the airfoil. Through theinterference of the steel wires on the airflow, an airflow behind the steel wire forms a small-range turbulent flow area, the turbulent flow area needs to cover a small part of the range of the leading edge of the wing and can be adhered to the surface of the wing again in a short time, and the influence of differential pressure resistance can be effectively reduced. In the prior art, the differential pressure resistance of the fixed-wing aircraft cannot be completely eliminated, and the differential pressure resistance can be completely eliminated by constructing turbulence in the leading edge region of the airfoil, so that the overall resistance of the fixed-wing aircraft is reduced, the power consumption rate is reduced, and the economic benefit of the fixed-wing aircraft is improved.

Description

technical field [0001] The invention relates to the field of aviation technology, in particular to the design of wings. Background technique [0002] Fixed-wing aircraft will be affected by resistance during flight, and the magnitude of resistance directly affects economic indicators such as the power consumption rate of fixed-wing aircraft. Reducing the resistance of fixed-wing aircraft is the goal pursued in the aerodynamic design process. [0003] There are four types of resistance faced by fixed-wing aircraft: frictional resistance, differential pressure resistance, interference resistance and induced resistance. Among them, the reason for the formation of pressure difference resistance is that the gas transition in the wake region of the fixed-wing aircraft forms turbulent flow, and the energy dissipation increases, resulting in the loss of pressure energy and the decrease of static pressure, thereby forming a pressure difference with the laminar flow at the leading edg...

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): B64C3/36
CPCB64C3/36
Inventor 陈滨王祁
Owner 浙江万丰飞机制造有限公司
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