Estimation of Ignition Pressure in Ammunition

This paper presents the experimental estimation of the ignition pressure value produced by a primer in small arms ammunition. Investigations were performed using a chamber of the capacity equal to the capacity of the 12.7 mm ammunition case. The inner volume of the chamber was adjusted to the free v...

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Bibliographic Details
Published inEnergies (Basel) Vol. 15; no. 16; p. 5916
Main Authors Trębiński, Radosław, Woźniak, Ryszard, Szupieńko, Damian, Fikus, Bartosz
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.08.2022
Subjects
Ammunition
Ballistics
Barium
Chambers
Gauges
Ignition
ignition pressure
Impact analysis
inert filling
Interior ballistics
lumped parameter models
Pressure
Small arms
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Summary:This paper presents the experimental estimation of the ignition pressure value produced by a primer in small arms ammunition. Investigations were performed using a chamber of the capacity equal to the capacity of the 12.7 mm ammunition case. The inner volume of the chamber was adjusted to the free volume in the cartridge by inserting a sleeve or glass balls of a diameter of 2 or 4 mm. The pressure values were measured inside the chamber after the action of the primer. The maximum pressure value was used as an estimation of the ignition pressure value. Depending on the nature of the filling, considerably different values were obtained; they were compared with the values of pressure measured inside the case at the live firing. A considerable difference between the ignition pressure values measured inside the case and those measured in the model setup was detected. Based on these results, a discussion concerning the choice of the starting pressure in interior ballistics lumped parameters models was carried out.
ISSN:1996-1073
1996-1073
DOI:10.3390/en15165916