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Method for measuring reversely-spraying hole of rocket chamber shell and special devices

A measurement method and anti-spray hole technology, applied in the direction of measuring devices, mechanical measuring devices, mechanical devices, etc., can solve the problems of expensive detection equipment, strict detection environment requirements, low detection efficiency, etc., and meet strict environmental temperature and humidity requirements , high price and high detection accuracy

Active Publication Date: 2014-02-05
AEROSPACE SCI & IND KET TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of expensive detection equipment, strict detection environment requirements and low detection efficiency in the prior art, and provide a simple and fast measurement method and special device for the anti-spray hole of the rocket combustion chamber shell

Method used

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  • Method for measuring reversely-spraying hole of rocket chamber shell and special devices
  • Method for measuring reversely-spraying hole of rocket chamber shell and special devices
  • Method for measuring reversely-spraying hole of rocket chamber shell and special devices

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Embodiment 1

[0032] For an aircraft Φ880mm×5000mm rocket combustion chamber shell 1, the theoretical requirements for the spatial position, size and angle of the anti-injection hole 1.2: L1=82.8±0.5mm, L2=125.25±0.5mm, L3=243.13mm, anti-injection angle α=38°±5′. Such as figure 1 As shown, the measurement process is as follows:

[0033] 1) Measure the spatial position dimension L1 of the anti-spray hole 1.2: the first positioning end 2.1 of the first special measuring fixture 2 is closely attached to the anti-spray hole 1.2 in the axial direction, and the side surface of the first measuring end 2.2 is aligned with the end face of the front skirt 1.1 Parallel with a gap, the gap value a1 is measured by the standard block gauge 5, a1 is 4.97mm, and the distance A1 between the center of the outlet end face of the anti-spray hole 1.2 and the side of the first measuring end 2.2 is measured, and the actual measured value of A1 is accurate to 0.01mm. 77.78mm, the calculation formula of L1 is L1=...

Embodiment 2

[0039] For the shell 1 of an aircraft Φ1200mm×6000mm rocket combustion chamber, the theoretical requirements for the spatial position, size and angle of the anti-injection hole 1.2: L1=136.3±0.5mm, L2=171.7±0.5mm, L3=340.92mm, anti-injection angle α=40°±5′. Such as figure 1 As shown, the measurement process is as follows:

[0040] 1) Measure the spatial position dimension L1 of the anti-spray hole 1.2: the first positioning end 2.1 of the first special measuring fixture 2 is closely attached to the anti-spray hole 1.2 in the axial direction, and the side surface of the first measuring end 2.2 is aligned with the end face of the front skirt 1.1 Parallel with a gap, the gap value a1 is measured by the standard block gauge 5, a1 is 5.03mm, and the distance A1 between the center of the outlet end face of the anti-spray hole 1.2 and the side of the first measuring end 2.2 is measured, and the actual measured value of A1 is accurate to 0.01mm. 131.32mm, the calculation formula of ...

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Abstract

The invention discloses a method for measuring a reversely-spraying hole of a rocket chamber shell and special devices. The distance L1 from the end face of a front hem base on the rocket chamber shell to the center of the end face of an outlet of the reversely-spraying hole is measured through a first special measuring clamp and a standard block gauge; the distance L2 from the outer circle of the front hem base to the center of the end face of the outlet of the reversely-spraying hole is measured through a second special measuring clamp and a standard block gauge; the distance L3 from the end face of the front hem base to the intersection point of an axis extension line of the reversely-spraying hole and an outer circle extension line of the front hem base is measured through a third special measuring clamp and a standard block gauge; the space angle alpha of the reversely-spraying hole satisfies the equation that alpha = arctg L2 / (L3-L1). According to the method for measuring the reversely-spraying hole of the rocket chamber shell and the special devices, a detection device which is high in price, strict in environment requirement and high in accuracy is not needed, and the special measuring clamps and the standard block gauges are adopted, so that the size and the angle of the space position of the reversely-spraying hole of the rocket chamber shell are measured accurately. According to the method for measuring the reversely-spraying hole of the rocket chamber shell and the special devices, measurement is convenient and rapid, the detection accuracy is high, and the requirement for accuracy of product design can be fully satisfied.

Description

technical field [0001] The invention relates to the measurement of rocket engine combustion chamber casings, in particular to a measurement method and a special device for the anti-spray holes of rocket combustion chamber casings. Background technique [0002] The solid rocket motor is the power device of the aerospace vehicle, which is composed of the main parts such as the combustion chamber, the propellant grain, the nozzle, and the igniter. The combustor casing is a key part of the solid rocket motor system, which provides power to the vehicle through the combustion of propellant. There are four evenly distributed anti-spray joints with anti-spray holes on the front head of the shell. The thrust termination mechanism is installed in the anti-spray holes, and the outer thread is connected with the guide pipe. When the aircraft arrives at the predetermined position, the computer on the bomb sends out a detonation command, the thrust termination mechanism is detonated, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/00G01B5/24
Inventor 韩庆波余天雄高建国王华东
Owner AEROSPACE SCI & IND KET TECH CO LTD
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