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

Structural design method for internal balance self-adaptation bump air inlet channel

A structural design and self-adaptive technology, applied in the field of structural design of inner balance self-adaptive bulging air inlet, can solve the problems of unadjustable three-dimensional profile and poor performance, achieve good engineering applicability and solve the effect of unadjustable.

Active Publication Date: 2015-05-06
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the three-dimensional profile of this inlet is not adjustable, and it can only achieve the best performance at the design flight speed, while the performance becomes worse at non-design points

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
  • Structural design method for internal balance self-adaptation bump air inlet channel
  • Structural design method for internal balance self-adaptation bump air inlet channel
  • Structural design method for internal balance self-adaptation bump air inlet channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The specific implementation manner of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] The bulge surface in the bulge inlet is a three-dimensional surface designed aerodynamically, such as figure 1 shown. On the bulge surface, select a certain area as the deformation area. The outline of the deformed area is generally oval, and may also be circular or other suitable shapes. In the deformed area, a flexible skin is used to attach to the outer surface of the original metal skin of the bulge inlet structure. At the boundary of the deformed area, the flexible skin is fixed on the bulge inlet structure by means of fastener connection or adhesive bonding, such as figure 2 shown.

[0027] The flexible skin is compounded by elastic film 1 and high elastic fiber 2. Its initial configuration is consistent with the basic profile of the bulging air intake, and it is in the shape of a flat spherical shell, s...

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 technical field of aviation structural design, and relates to a structural design method for an internal balance self-adaptation bump air inlet channel. The structural design method comprises the steps that a deformed region is selected on a bump molded surface of the air inlet channel; flexible skin is formed by compositing elastic adhesive films and high-elastic fibers; an outer side sealing cavity is formed between the basic molded surface of the air inlet channel and the outer side flexible skin, and an inner side sealing cavity is formed between the basic molded surface of the air inlet channel and the inner side flexible skin; the initial shape of the flexible skin is consistent with the basic molded surface of the internal balance self-adaptation bump air inlet channel; the air inlet channel is provided with a deformation driving device. Under the control of the deformation driving device, the shape of the flexible skin of the internal balance self-adaptation bump air inlet channel can be changed. According to the structural design method, the problem that the molded surface of a conventional bump air inlet channel cannot be adjusted is solved, the air inlet channel have the best pneumatic performance and the inlet engine compatibility characteristics under different flight states, and the good engineering applicability is achieved.

Description

technical field [0001] The invention belongs to the technical field of aeronautical structure design, and relates to a structural design method of an internally balanced self-adaptive bulging air inlet. Background technique [0002] Advanced supersonic fighter has the characteristics of wide speed range, high maneuverability and high stealth capability. In order to improve the stealth performance of the aircraft, the fourth-generation fighters generally adopt the ternary air inlet, such as the Bump (bulge) air inlet used by the F-35 aircraft of the United States. However, the three-dimensional profile of this air intake is not adjustable, and it can only achieve the best performance at the design flight speed, while the performance at non-design points becomes worse. If the air inlet can maintain high performance in the full flight envelope, the flight performance and combat capability of the supersonic fighter will be significantly improved. [0003] The adaptive bulging ...

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): B64D33/02
Inventor 邱涛靳诚忠周翌勋王鄢张音旋王健志
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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