BRLCB: A Closed-Chamber Data Analysis Program. Part 1. Theory and User's Manual

Oberle, William F.; Kooker, Douglas E.

doi:10.21236/ada260493

Cited by 14 publications

(7 citation statements)

References 1 publication

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“…Thermochemical properties for each formulation were obtained from CHEETAH 2.0 using the gun calculation tool at 0.2 g cm 3 and enabling BLAKE library compatibility [27]. From the thermochemical properties, the pressure time curve and the grains measurements, LBR rate regression was performed using BRLCB V3.0 [28].…”

Section: Closed Vessel Analysismentioning

confidence: 99%

Linear Burning Rate and Erosivity Properties of Nitrocellulose Propellant Formulations Plasticized by Glycidyl Azide Polymer and Nitroglycerine

Comtois

Favis

Dubois

2021

Propellants Explo Pyrotec

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The performance of the extruded cord geometry of nitrocellulose (NC) propellants plasticized by glycidyl azide polymer (GAP) and nitroglycerine (NG) has been evaluated using both closed and erosion vented vessel techniques in order to obtain the linear burning rate and the relative erosivity of these propellants. The closed vessel experiments performed at −46, 21 and 63 °C demonstrate that the measured maximum pressure is in accordance with the calculation obtained using the CHEETAH V2 thermochemical code. From the closed vessel analysis, the linear burning rates show that it is on average 89±3 % that of the 21 °C propellant when fired at −46 °C. and 112±4 % when fired at 63 °C. The addition of either GAP or NG increases the linear burning rate when compared to the neat NC formulation. Relative erosion data obtained in the erosion vented vessel are in agreement with the Arisawa‐Kimura models and it is found that the ratio of CO/CO2 concentration in combustion gases is a better erosivity indicator than N2/CO ratio.

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Section: Closed Vessel Analysismentioning

confidence: 99%

Linear Burning Rate and Erosivity Properties of Nitrocellulose Propellant Formulations Plasticized by Glycidyl Azide Polymer and Nitroglycerine

Comtois

Favis

Dubois

2021

Propellants Explo Pyrotec

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“…Knowing the chamber volume as well as the propellant's mechanical and thermochemical properties, one can calculate a burning rate using the empirically measured pressure-time history of the propellant (6). In this study, burning rates were of no interest; however, we wanted to calculate the chamber volume in order to determine the appropriate charge weights needed to achieve the desired chamber pressure.…”

Section: Calculating Charge Weights and Volumementioning

confidence: 99%

Dynamic Pressure Testing of a 155-mm Howitzer Ballistic Window Using a Closed Bomb Vessel

Ritter¹,

Homan²,

Thalman³

2010

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Approved for public release; distribution unlimited. ii REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704-0188Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.

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“…The interior ballistics monographs describe the standard methods for the closed vessel experimental determination of these ballistic properties [13][14]. According to these traditional methods, the calculation software is compiled, such as CBRED, MINICB, BRLCB, XLCB [15][16][17][18]. Dynamic vivacity has been used in the analysis of closed chamber experimental data to assess propellant grain surface area behavior during combustion.…”

Section: Introductionmentioning

confidence: 99%

Study of the form function and combustion characteristics of partially‐cut stick propellants

Xue

Wang

Ruyi

et al. 2023

Propellants Explo Pyrotec

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To study the form function and combustion characteristics of partially‐cut stick propellants, this paper derived and established the form function of this complex geometry propellant and analyzed the influence of cutting parameters on the form function. The analysis showed that partially‐cut stick propellants retain the high progressive combustion of multi‐aperture granular propellant, which is proportional to the distance between the notch and inversely proportional to the width of the notch. Based on this, partially‐cut stick propellants with different notches were prepared, and closed vessel tests were conducted. The experimental results showed that the notch had a significant effect on the combustion characteristics of the propellant. When there were notches, the wider the notch, the faster the pressure rise. The pressure in the closed vessel for stick propellants without notches rose the fastest. The burning rate of non‐notched or narrow‐notched fluctuated, while the burning rate of wide‐notched was stable. The dynamic vivacity data showed that the wider the notch, the more stable the change of the burning surface, and the combustion characteristic was closer to the granular propellant. Based on the analysis of form function and combustion characteristics, it is recommended that the notch width be 1 mm and the distance between notches on the same side should be the length of a granular propellant for the double‐base homogeneous 19‐perforated propellant studied in this paper.

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BRLCB: A Closed-Chamber Data Analysis Program. Part 1. Theory and User's Manual

Cited by 14 publications

References 1 publication

Linear Burning Rate and Erosivity Properties of Nitrocellulose Propellant Formulations Plasticized by Glycidyl Azide Polymer and Nitroglycerine

Linear Burning Rate and Erosivity Properties of Nitrocellulose Propellant Formulations Plasticized by Glycidyl Azide Polymer and Nitroglycerine

Dynamic Pressure Testing of a 155-mm Howitzer Ballistic Window Using a Closed Bomb Vessel

Study of the form function and combustion characteristics of partially‐cut stick propellants

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