Aircraft quality characteristic simple measuring device and measuring method

A technology of quality characteristics and measuring devices, which is applied in the field of simple measurement devices for aircraft quality characteristics, can solve problems such as high cost, complicated measurement methods, and expensive measurement equipment, and achieve the effect of reliable methods and simple operations

Pending Publication Date: 2020-08-28
CHINA AERODYNAMICS RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In engineering applications, the quality characteristics of aircraft are the important basis and key control parameters for aircraft design. The quality characteristics of aircraft can be accurately measured by professional measu

Method used

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  • Aircraft quality characteristic simple measuring device and measuring method
  • Aircraft quality characteristic simple measuring device and measuring method
  • Aircraft quality characteristic simple measuring device and measuring method

Examples

Experimental program
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Effect test

Example Embodiment

[0043] Example 1:

[0044] See figure 1 , A simple measurement device for aircraft quality characteristics, including a horizontal measurement platform 1 on which two support mechanisms are installed. The support mechanism includes a base and two hydraulic telescopic rods 2 vertically fixed on the base. The top of the hydraulic telescopic rod 2 is installed with a horizontal beam 3, the outer wall of the beam 3 is sleeved with a plurality of sleeves 4, the bottom of the outer wall of the sleeve 4 is fixed with a universal joint 5, and a hoisting rope is provided on the universal joint 5.

[0045] In this embodiment, the crossbeam 3 and the hydraulic telescopic rods 2 of the two supporting mechanisms form a gate-shaped structure. The bottom of the sleeve 4 on the outer wall of the crossbeam 3 is installed with a hoist rope through a universal joint 5 to hang the aircraft and extend it. The hydraulic telescopic rod 2 is hoisted with simple operation and low cost.

[0046] The sleeve ...

Example Embodiment

[0074] Example 2

[0075] Such as Figure 5 with Image 6 , On the basis of Example 1, that is, the moment of inertia I of the aircraft measured when the two suspension ropes are parallel to the z-axis or the y-axis and are at the same distance from the z-axis or the y-axis z Or I y . However, this is often not possible in actual measurement. Sometimes it is difficult to find the position where the frame can be stuck to the front and rear fuselage at the same distance before and after the center of mass of the aircraft. It is necessary to make the position of the front and rear frames asymmetrical to the center of mass, so that the two The z-axis or y-axis represented by the center line of the sling is different from the zˊ-axis or yˊ-axis passing through the actual center of mass of the aircraft respectively by L z Or L y ; Or due to the difference between the actual center of mass of the aircraft and the theoretical center of mass during the deployment process, the z ˊ axis or y...

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Abstract

The invention relates to the technical field of aircraft quality characteristic measurement, and discloses an aircraft quality characteristic simple measuring device and an aircraft quality characteristic simple measuring method. The aircraft quality characteristic simple measuring device comprises a horizontally-arranged measuring platform, wherein two supporting mechanisms are installed on the measuring platform; and each supporting mechanism comprises a base and two hydraulic telescopic rods vertically fixed to the base, a cross beam is horizontally installed at the top parts of the two hydraulic telescopic rods, the outer wall of the cross beam is sleeved with a plurality of sleeves, universal joints are fixed to the bottom parts of the outer walls of the sleeves, and lifting ropes arearranged on the universal joints. According to the aircraft quality characteristic simple measuring device and the aircraft quality characteristic simple measuring method, an aircraft is hung above the measuring platforms, and the position of the centroid relative to the hanging point can be calculated by using a balance equation of the moment of the hanging point, so that the position of the centroid of the aircraft is determined; and the moment of inertia of the aircraft is measured by adopting a double cycloid method, the operation is simple, and the method is reliable and can be widely applied to aircraft quality characteristic measurement.

Description

technical field [0001] The invention relates to the technical field of measurement of aircraft quality characteristics, in particular to a simple measurement device and method for measurement of aircraft quality characteristics. Background technique [0002] The mass characteristics of the aircraft refer to the mass, center of mass position, moment of inertia and other characteristics of the aircraft. In engineering applications, the quality characteristics of aircraft are the important basis and key control parameters for aircraft design. The quality characteristics of aircraft can be accurately measured by professional measuring equipment, but professional measuring equipment is generally expensive, and different aircraft require different designs. The measurement tooling structure is more complicated and the cost is higher. Contents of the invention [0003] Based on the above problems, the present invention provides a simple measuring device and method for measuring t...

Claims

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Application Information

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IPC IPC(8): G01M1/12G01M1/10B64F5/60
CPCB64F5/60G01M1/10G01M1/125
Inventor 肖涵山欧朝吉红亮何烈堂和争春李明辉任友成柳宁远杨洋方桂才官睿杨召
Owner CHINA AERODYNAMICS RES & DEV CENT
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