Ge/Us Copper Crusher Measurement Of Weapon Chamber Pressure To find similar documents by Federal Supply Class Code: FSC Standardization Area ISDA (International Standardization Documents) ORDER. Document Number. ITOP-03-2-811. Revision Level. REVISION 0. Status. Current. Publication Date. Nov. 28, 2023.
In the field of interior ballistics, crusher gauges are still widely used for the gas peak pressure measurement within a fired ammunition. Under the effect of the gas chamber pressure, a copper ...
Only SAAMI segregates copper crusher and Piezo transducer results with different units (CUP and psi). Everyone else uses the same pressure units for both, be it psi, MPa, or bar (tenths of an MPa), and you just have to have the inside track on which instrument made the measurement to know what you are looking at.
1. Assembly Sketch of M-11 Copper Crusher 10 2. Pressure vs. Remaining Length for M-11 Copper Crusher . . 12 3. Crusher Pressure vs. Piezo Pressure 14 4. Finite Element Grid of Copper Crusher With Loading Scheme 17 5. Deformed Finite Element Grid; Result of 550 MPa at -40°C. 18 6. Result of 827 MPa Applied to Modified M-11 Crusher Gage . …
A stress analysis on the M-11 Copper Crusher Gage was performed to determine possible flaws in design which prevent repeatability of pressure measurements. As a result of …
The CUP measurement method is a pretty basic system in modern times, giving only the peak force on the crusher, but then again its simple! Although I haven't been working in the ballistic instrumentation and photography field for a few years, copper crusher gauges were still used for large caliber weapons systems when I was there.
So if the copper crusher system is well correlated with … more rifles with strain gauges, you might want to use published CUP data to set an. ... The old way of measuring pressure was known as the copper crusher method. … Today, transducers, or strain gauges, are used to measure pressure. ...
Conversely to the piezoelectric transducer measurements, where the standard deviation on the measured peak pressures increases with increasing peak pressure, the standard deviation of the copper crusher measurements is relatively independent of the peak pressure itself. For very high pressures, results obtained with the copper crusher
copper crusher measurement of weapon chamber pressure Scope: This ITOP describes instrumentation and procedures for measuring peak chamber pressures within various weapon systems using NATO approved copper crusher gauges during …
Older publications like Hatcher's Notebook (the last edition was 1961) still refer to copper crusher measurements as psi. One other problem with the copper crusher, besides its non-linearity, is that it is less consistent than the other methods by about a factor of two, so even for comparison, it is a less desirable method of measuring.
The copper cylinder is often used to measure chamber pressure in weapon test. Due to differences in primary pressure datum, uncertainty of height measurement, inconsistent individual deformation, inconsistent sensitivity and difference of temperatures, these five evaluated values have a certain degree of uncertainty, which reduces the accuracy of …
Figure 3on page 4 shows a cross-section of a typical copper crusher installed onto a pressure barrel. In this pressure measurement system, a small hole is drilled through one wall of the case in line with the piston hole, generally at mid-case location. The gas check, piston, and copper crusher are installed and retained with the thumb screw. When
This ITOP describes instrumentation and procedures for measuring peak chamber pressures within various weapon systems using NATO approved copper …
Measurement cartridge and copper crusher cylinder. Download : Download full-size image; Fig. 2. Indent made by Glock-pistol firing pin on a copper cylinder head. National Institute of Justice [5] specifies a similar method. Instead of using a copper cylinder it recommends using a headspace gage modified to allow insertion of an unfired …
The Crusher measuring system is a proved method for the determination of inner-ballistic maximum pressure in combustion chambers. With the help of a device resp. the Crusher measuring apparatus, a copper body is loaded. The plastic deformation which results from the load is the measure for the pressure. Detaild Product Information: CR-Series ...
Until the mid of 1960, crusher gauge technique was the widely known and used method for gas peak pressure measurement. A copper or lead made cylinder is …
The NRA "Reloading Handbook" from the early 1960's lists a Canadian Defense Industries (DI) 1950 Mk VII Cordite load as 43,060 psi at 2433 fps. I suspect that must have been the British system of copper crusher measurement, the article did state they used a British Government test barrel. It did not explain the measuring apparatus.
How to Measure Your Head. Grab a soft measuring tape or a piece of string (like twine or a shoelace) and a ruler or measuring tool; Wrap a soft tape or string around your head to measure about 1 / 4 to 1 / 2 inch above your ear and about 3 / 4 to an 1" inch above your brow line (see image) . Mark the tape or your string, where it intersects, with your finger.
COPPER CRUSHER CYLINDERS WHEN USED FOR MORE THAN ONE ROUND by R. C. Gerdom Aprill936 Thll do~ument has been approved for puNic releasa and sale· ... The results of thP pressure measurements are given in Table I. The results :recorded d.uring the firing of the 12 and 14A guns ~ere quite different from those recorded during the ...
measurements have shown that the medium size material is largely unaffected during primary crushing. Therefore, as high energy blasting reduces the topsize of the crusher feed (particularly in difficult to blast zones), there is a greater chance of the medium or critical size material passing straight through the crusher and reporting to the mill.
Specifications" (MPS) were scant to say the least — "Material, Copper Development Association Alloy 102." The RFPI crusher was made ofthe same material specified in the S."MI technical manual for the cylindrical pressure measurement used by ballistic test laboratories to measure the
Copper crusher cylinders are produced according to strict requirements on precision and material purity. Own machining capability, heat treatment and polishing alow part customisation. In house developed calibration pressing and pre-pressing provides full control of the production process.
primarily used to measure pressure for ammunition testing. To measure pressure, a copper crusher cylinder is compressed by a piston fitted to a piston hole into the chamber of the test barrel. Pressure generated by the burning propellant acts on the base of the piston, forcing the piston to move, thereby permanently compressing the copper cylinder.
In the field of interior ballistics, crusher gauges are still widely used for the gas peak pressure measurement within a fired ammunition. Under the effect of the gas chamber pressure, a copper cylinder deforms plastically and records its maximum amplitude. The plastic deformation is after what converted to a peak pressure through …
China High Pressure Micropowder Grinding Mill.hp series high efficiency hydraulic pressure cone crusher; propellant pressure measurement copper crusher presentation;TERM DESCRIPTION A Action Air ResistanceA propellant powder intended for retail sale to hobby handloaders.As these hobbyists do not have access to pressure testing equipment and …
The values can be taken as an indication of unreliability of copper crusher measurement technique which is clearly affected by type of ammunition as well as other multiple factors. The values of relative spread also indicate same trend of copper crusher methodology depending on type of ammunition. The consistent trend in stable values of ...
Decades ago, due to the lack of suitable electronic measuring equipment, these measurements were conducted using a simple copper crusher method. The copper crusher method consists of a copper cylinder which is deformed depending on the pressure produced in the chamber of the weapon during the firing process. 20,21 Even …
COPPER CRUSHER MEASUREMENT OF WEAPON CHAMBER PRESSURE. Powered by STGnet. Published 2022-05-28 by USDoD (United States Department of Defense). ITOP-3.2.810.2. COPPER CRUSHER MEASUREMENT OF WEAPON CHAMBER PRESSURE. Online Access to your Standards Collection - …
Kistler pressure transducer and the copper crushers. All measurements were taken at 21 ±2°C in a completely enclosed shooting test stand free from weather influences. Results of this series have been used in the second part of this paper to study the dynamic behavior of copper crusher gauges. 2.3. Results and discussion 2.3.1.
