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Aviation propeller blade angle measuring device and method

A technology of aviation propellers and measuring devices, which is applied in the direction of angle/taper measurement, etc., can solve the problems of large limitations of blade angle measuring devices, and achieve the effects of improving quality control, accurate measurement results, and reliable and stable processes

Active Publication Date: 2020-04-07
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: how to solve the problem that the existing blade angle measurement device has relatively large limitations

Method used

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  • Aviation propeller blade angle measuring device and method
  • Aviation propeller blade angle measuring device and method
  • Aviation propeller blade angle measuring device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, an aviation propeller blade angle measuring device includes a hub positioning mechanism 1, a blade angle positioning detection mechanism 2, and an angle measuring instrument 3;

[0038] to combine figure 2 As shown, the propeller hub positioning mechanism 1 has a clamping surface that fits on the shaft surface or / and flange surface of the propeller hub 4, and the propeller hub positioning mechanism has a first measurement plane A; specifically, the propeller hub The positioning mechanism 1 includes a first clamping arm 11, a second clamping arm 12, and a first guide rod 13; one end of the first clamping arm 11 is slidably connected to the first guide rod 13, and the other end of the first clamping arm 11 has The first clamping surface, one end of the second clamping arm 12 is slidingly connected to the first guide rod 13, the other end of the second clamping arm 12 has a second clamping surface, the first clamping arm 11 and the second clampin...

Embodiment 2

[0045] Such as image 3 As shown, on the basis of the second embodiment, this embodiment also includes an adjustment arm 28, one end of the adjustment arm 28 is connected to the top end of the second guide rod on the left side through a joint bearing 29, and the top end of the second guide rod 24 on the left side is Stretch out the front edge contact arm 21, and the dial indicator 23 is connected to the other end of the adjustment arm 28 through the joint bearing 29.

[0046] It should be noted, image 3 It is just to show that the angle measuring instrument 3 will be placed on the first measurement plane A and the second measurement plane B according to the measurement process. The measurement process is that the angle measuring instrument 3 is placed on the first measurement plane A first, and then reset to zero , and then placed on the second measurement plane B.

[0047] The clamping surface of the propeller hub positioning mechanism 1 in this embodiment fits the shaft s...

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Abstract

The invention discloses an aviation propeller blade angle measuring device. The device comprises a propeller hub positioning mechanism, a blade angle positioning detection mechanism and an angle measuring instrument. The propeller hub positioning mechanism is provided with a clamping surface attached to a propeller hub and a first measuring plane; the blade angle positioning detection mechanism comprises a front edge contact arm, a rear edge contact arm, a dial indicator and a second guide rod, the two ends of the front edge contact arm and the rear edge contact arm are connected through the second guide rod, the second guide rod extends out of the front edge contact arm, the dial indicator is connected to the top end of the second guide rod, and the blade angle positioning detection mechanism is provided with a second measuring plane. The present invention further provides a method by using the device. The aviation propeller blade angle measuring device and method have the advantagesthat the section chord line of the blade can be accurately recognized and positioned, so that the blade angle of the propeller is accurately measured through the positioning reference, and the problemof chord line positioning out-of-tolerance caused by a conventional measuring method of blade surface positioning is avoided; and moreover, the device is simple in structure, convenient to use, accurate in measurement result and reliable and stable in process.

Description

technical field [0001] The present invention relates to the measurement of propeller parameters of aircraft aircraft, in particular to a device and method for measuring blade angle of propeller blades of aircraft aircraft. Background technique [0002] The propeller blade angle, also known as the torsion angle of the propeller, refers to the angle between the propeller chord line and the propeller rotation plane. It changes with the change of the radius, and its change rule is the most important factor affecting the performance of the propeller. factor. It is customary to use the blade angle at 70% diameter as the nominal value of the blade angle of the paddle. [0003] The blade angle is one of the important parameters of the propeller engine. The accuracy of the measurement not only directly affects the evaluation of the engine performance (pull force, propulsion efficiency, etc.), but also serves as a position mark for checking the propeller engine's feathering, propelle...

Claims

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Application Information

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IPC IPC(8): G01B5/24
CPCG01B5/24
Inventor 张翼
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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