A large-scale wind tunnel nozzle test section integrated device

A test section and nozzle technology, applied in the aerospace test field, can solve the problems of limited effect and low efficiency of wind tunnel test, and achieve the effects of convenient disassembly, reduced labor cost and high technical reliability
CN108519209BActive Publication Date: 2020-03-24CHINA ACAD OF AEROSPACE AERODYNAMICS
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ACAD OF AEROSPACE AERODYNAMICS
Publication Date
2020-03-24

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a large wind tunnel nozzle test section integrated device, and relates to the technical field of aerospace testing. The large wind tunnel nozzle test section integrated devicecomprises an nozzle test integrated section, an outlet flange section, a support frame car, a thread pin and wind tunnel devices; the support frame car is horizontally placed on the ground; the nozzletest integrated section is placed horizontally on the upper surface of the support frame car, and the axial direction of the nozzle test integrated section is identical to the longitudinal directionof the support frame car; the outlet flange section is coaxially fixed and installed in an axial outlet end of the nozzle test integrated section; the outlet flange section and the nozzle test integrated section are fixedly connected through the threaded pin; the wind tunnel devices are coaxially and fixedly mounted on the axial inlet end of the nozzle test integrated section and the axial outer end of the outlet flange section. The large wind tunnel nozzle test section integrated device adopts the modular design, is low in processing and manufacturing cost, is high in economy; driving is achieved by a wheel set, guiding and positioning is achieved by a guide rail; the operation is simple, and the safety is high; and the precise positioning design reduces the labor cost, and the disassembly and assembly is convenient. .
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The invention relates to the technical field of aerospace tests, in particular to a large-scale wind tunnel nozzle test section integrated device. Background technique

[0002] The range of the airflow Mach number in the test section of the subspan supersonic wind tunnel is 0.4≤Ma≤4.5. Since the establishment of supersonic airflow depends on the ratio of the cross-sectional area of ​​the roar to the exit, conventional subsonic wind tunnels are mostly equipped with multiple supersonic nozzles to obtain different test section Mach numbers, including several subsonic nozzles and subsonic nozzles. Transonic test section, multiple supersonic nozzles and several supersonic test sections, the typical configuration of the wind tunnel is as attached image 3 Shown. The supersonic nozzle is connected to the supersonic test section through flanges, and the joints are sealed by clamping rubber pads, which will inevitably produce dislocation steps and gaps. Although th...

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