A kind of gunpowder gas pressure test calibration method
A gas pressure and calibration method technology, which is applied in ammunition testing, fluid pressure measurement, ammunition, etc., can solve the problems of different pressure durations, large measurement errors, and wide range of chamber pressure changes, and achieve the goal of improving test accuracy Effect
Active Publication Date: 2022-02-25
中国人民解放军63856部队
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Problems solved by technology
[0003] This calibration method has a large measurement error in practical applications, because the chamber pressure of the weapon varies widely, the duration of the pressure varies, and the test process is often accompanied by harsh environmental conditions such as high temperature and vibration. It is inevitable and must be considered in the calibration process, and on-site calibration is required
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Embodiment 1
[0027] see figure 1 , in an embodiment of the present invention, a propellant gas pressure test calibration method, comprising the following steps:
[0028] A propellant gas pressure test calibration method, comprising the following steps:
[0029] S1, clamp the ballistic gun for calibration in the fixed frame on the fixed shooting platform, the structure of the fixed frame is as attached in the manual figure 1 As shown, wherein the fixed frame 1 includes a fixed bracket A2 and a fixed bracket B3, and the calibration system 4 and the test system 5 are connected as required (in this embodiment, the calibration system 4 includes a standard pressure sensor Kistler6123BK type, a standard charge amplifier Kistler5011B11Y50 type, data Acquisition card and computer, test system 5 includes test pressure sensor Kistler6215 type, charge amplifier Kistler5011B11 type, data acquisition card and computer, calibration system and test system can share the same data acquisition card and comp...
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The invention discloses a propellant gas pressure test calibration method, which relates to the technical field of pressure calibration. By selecting a calibration ammunition similar to the test ammunition and a consistent calibration environment and test environment, the temperature of the ammunition is controlled so that the calibration pressure range covers the test pressure range. Data preprocessing and consistency check eliminate unqualified data, obtain the sensitivity equation for testing by means of second-order fitting of multi-point data, and comprehensively improve the accuracy of gunpowder gas pressure testing, and the test results are better than the 2% FS requirement of the military standard . The invention provides a propellant gas pressure test and calibration method, which solves the problem that pressure calibration lacks an on-site calibration method and the accuracy of laboratory calibration is poor.
Description
technical field [0001] The invention relates to the technical field of pressure calibration, in particular to a propellant gas pressure test calibration method. Background technique [0002] The current calibration of the gunpowder gas pressure test system is completed by the National Metrology Laboratory under standard experimental conditions. The static pressure generator is used as the calibration source to mainly measure the correspondence between the multi-point static pressure and the output voltage value of the test sensor to obtain the test sensor. The sensitivity equation is used in the actual gunpowder gas pressure test. [0003] This calibration method has a large measurement error in practical applications, because the chamber pressure of the weapon varies widely, the duration of the pressure varies, and the test process is often accompanied by harsh environmental conditions such as high temperature and vibration. It is inevitable and must be considered in the c...
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IPC IPC(8): F42B35/02G01L27/00
CPCF42B35/02G01L27/002
Inventor 景春阳杜炽旭经哲刘石刘宝华孟祥会张欣欣张宇峰朱建国张成吉葛鑫欣曲生辉
Owner 中国人民解放军63856部队