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CN-122016268-A - Propeller fairing acceleration test device

CN122016268ACN 122016268 ACN122016268 ACN 122016268ACN-122016268-A

Abstract

The application relates to the technical field of acceleration test equipment, in particular to a propeller fairing acceleration test device, which comprises a fixed seat and a mounting seat, wherein the fixed seat is used for being connected with an acceleration test bed; the mount pad sets up on the fixing base, and the mount pad includes bottom plate, roof and support column, and the lower extreme and the bottom plate of support column are connected, and the upper end and the roof of support column are connected, and the bottom plate is used for being connected with the chassis of radome fairing, and the roof is used for being connected with the inner disc of radome fairing. The propeller fairing acceleration test device realizes reliable connection of the fairing and the test bed through the structures of the fixing seat and the mounting seat, accurately restores the stressed state under the actual use condition, solves the problems of rigid damage, stress concentration, data distortion and the like of the traditional device, and improves the universality, stability and reliability of the device through the addition of the components such as the elastic pad, the pressure sensor, the rib plate and the like.

Inventors

  • LIU YUFENG

Assignees

  • 惠阳航空螺旋桨有限责任公司

Dates

Publication Date
20260512
Application Date
20251219

Claims (9)

  1. 1. A propeller fairing acceleration test apparatus, comprising: the fixed seat is used for being connected with the acceleration test bed; The mounting seat, the mounting seat set up in on the fixing base, the mounting seat include bottom plate, roof and support column, the lower extreme of support column with the bottom plate is connected, the upper end of support column with the roof is connected, the bottom plate is used for being connected with the chassis of radome fairing, the roof is used for being connected with the inner disc of radome fairing.
  2. 2. The propeller fairing acceleration test apparatus of claim 1, wherein the bottom plate is a circular plate, the diameter of the bottom plate is larger than the diameter of the central hole of the chassis of the fairing, a plurality of mounting holes are uniformly formed in the bottom plate near the edge, and the edge of the bottom plate is connected with the central hole of the chassis of the fairing.
  3. 3. The propeller fairing acceleration test apparatus of claim 2, wherein the top plate is stepped and includes an upper section with a smaller diameter and a lower section with a larger diameter, the diameter of the upper section is smaller than the diameter of the center hole of the inner disk of the fairing, the diameter of the lower section is larger than the diameter of the center hole of the inner disk of the fairing, and the upper section passes upward from the center hole of the inner disk of the fairing.
  4. 4. The propeller fairing acceleration test apparatus of claim 3, wherein the outer side wall of the upper section and the upper end surface of the lower section are respectively provided with an elastic pad.
  5. 5. The propeller fairing acceleration test apparatus of claim 4, wherein a plurality of pressure sensors are circumferentially arranged between the outer side wall of the upper section and the elastic pad, and are respectively configured to collect pressure values of the outer side wall of the upper section in different directions.
  6. 6. The propeller fairing acceleration test apparatus of claim 5, characterized in that the side walls of the support columns are provided with side ribs along their radial direction.
  7. 7. The propeller fairing acceleration test apparatus of any one of claims 1-6, characterized in that the fixed seat comprises a fixed plate and a riser, the fixed plate is used for being connected with an acceleration test stand, the lower end of the riser is connected with the fixed plate, and the upper end of the riser is connected with the bottom plate.
  8. 8. The propeller fairing acceleration test apparatus of claim 7, wherein the fixing base further comprises a reinforcement rib disposed outside the riser and perpendicular to the riser and the fixing plate, respectively.
  9. 9. The propeller fairing acceleration test apparatus of claim 8, wherein the mounting plate is provided with a plurality of mounting holes.

Description

Propeller fairing acceleration test device Technical Field The application relates to the technical field of acceleration test equipment, in particular to a propeller fairing acceleration test device. Background The propeller fairing is used as a key aerodynamic component of an aircraft, and is required to bear acceleration overload generated by maneuvering in the flight process, and the structural strength of the propeller fairing is directly related to flight safety. According to the GJB 150A related standard requirements, the propeller fairing must pass the acceleration test before leaving the factory to verify whether the strength meets the use requirements. In the prior art, most of propeller fairings are of composite material thin-wall structures, and the traditional acceleration test device has the defects that firstly, the design of a mounting structure is unreasonable, the actual connection state of the fairings and a propeller shell cannot be accurately reduced, the test load transmission path is distorted, the reliability of a verification result is low, secondly, the pressure monitoring mechanism of the connection part of the fairings is lacked, the problem of local stress concentration is difficult to find, the structural strength cannot be comprehensively estimated, thirdly, the rigid connection mode is easy to cause extrusion damage to the composite material thin-wall structure, the suitability is poor, and the requirements of the fairings with different specifications are difficult to be compatible. Therefore, a propeller fairing acceleration test device with reasonable structure, accurate test and strong adaptability is needed to be designed. Disclosure of Invention The application provides a propeller fairing acceleration test device, which realizes the accurate matching of test working conditions and actual use working conditions by optimizing an installation structure and adding a monitoring component and a buffer structure, improves the accuracy and reliability of test data, and protects a composite material thin-wall structure from being damaged. The application provides a propeller fairing acceleration test device, comprising: the fixed seat is used for being connected with the acceleration test bed; The mounting seat is arranged on the fixing seat and comprises a bottom plate, a top plate and a supporting column, the lower end of the supporting column is connected with the bottom plate, the upper end of the supporting column is connected with the top plate, the bottom plate is used for being connected with a chassis of the fairing, and the top plate is used for being connected with an inner disc of the fairing. In one possible design, the bottom plate is a circular plate, the diameter of the bottom plate is larger than that of the central hole of the chassis of the fairing, a plurality of mounting holes are uniformly formed in the position, close to the edge, of the bottom plate, and the edge of the bottom plate is connected with the central hole of the chassis of the fairing. In one possible design, the top plate is stepped and columnar and comprises an upper section with a smaller diameter and a lower section with a larger diameter, wherein the diameter of the upper section is smaller than the diameter of the central hole of the inner disc of the fairing, the diameter of the lower section is larger than the diameter of the central hole of the inner disc of the fairing, and the upper section penetrates out upwards from the central hole of the inner disc of the fairing. In one possible design, the outer side wall of the upper section and the upper end face of the lower section are respectively provided with an elastic pad. In one possible design, a plurality of pressure sensors are circumferentially arranged between the outer side wall of the upper section and the elastic pad and are respectively used for collecting pressure values of different directions of the outer side wall of the upper section. In one possible design, the side walls of the support column are provided with side ribs in the radial direction thereof. In one possible design, the fixing base includes a fixing plate and a vertical plate, the fixing plate is used for being connected with the acceleration test stand, the lower end of the vertical plate is connected with the fixing plate, and the upper end of the vertical plate is connected with the bottom plate. In one possible design, the fixing base further comprises a reinforcing rib plate, wherein the reinforcing rib plate is arranged on the outer side of the vertical plate and is perpendicular to the vertical plate and the fixing plate respectively. In one possible design, the fixing plate is provided with a plurality of fixing holes. The beneficial effects of the application are as follows: The propeller fairing acceleration test device realizes reliable connection of the fairing and the test bed through the structures of the fixing seat and the mounting seat, acc